Hadoop Change Log Release 2.7.0 - UNRELEASED INCOMPATIBLE CHANGES HADOOP-10530 Make hadoop build on Java7+ only (stevel) NEW FEATURES HADOOP-10987. Provide an iterator-based listing API for FileSystem (kihwal) HADOOP-7984. Add hadoop --loglevel option to change log level. (Akira AJISAKA via cnauroth) HADOOP-9629. Support Windows Azure Storage - Blob as a file system in Hadoop. (Dexter Bradshaw, Mostafa Elhemali, Xi Fang, Johannes Klein, David Lao, Mike Liddell, Chuan Liu, Lengning Liu, Ivan Mitic, Michael Rys, Alexander Stojanovic, Brian Swan, and Min Wei via cnauroth) HADOOP-10728. Metrics system for Windows Azure Storage Filesystem. (Dexter Bradshaw, Mostafa Elhemali, Xi Fang, Johannes Klein, David Lao, Mike Liddell, Chuan Liu, Lengning Liu, Ivan Mitic, Michael Rys, Alexander Stojanovich, Brian Swan, and Min Wei via cnauroth) HADOOP-8989. hadoop fs -find feature (Jonathan Allen via aw) IMPROVEMENTS HADOOP-11483. HardLink.java should use the jdk7 createLink method (aajisaka) HADOOP-11156. DelegateToFileSystem should implement getFsStatus(final Path f). (Zhihai Xu via wang) HADOOP-11172. Improve error message in Shell#runCommand on OutOfMemoryError. (Yongjun Zhang via wang) HADOOP-10748. HttpServer2 should not load JspServlet. (wheat9) HADOOP-6857. FsShell should report raw disk usage including replication factor. (Byron Wong via shv) HADOOP-10847. Remove the usage of sun.security.x509.* in testing code. (Pascal Oliva via wheat9) HADOOP-10563. Remove the dependency of jsp in trunk. (wheat9) HADOOP-10786. Fix UGI#reloginFromKeytab on Java 8. (Stephen Chu via wheat9) HADOOP-11291. Log the cause of SASL connection failures. (Stephen Chu via cnauroth) HADOOP-11173. Improve error messages for some KeyShell commands. (wang) HADOOP-11257: Update "hadoop jar" documentation to warn against using it for launching yarn jars (iwasakims via cmccabe) HADOOP-11341. KMS support for whitelist key ACLs. (Arun Suresh via wang) HADOOP-11301. [optionally] update jmx cache to drop old metrics (Maysam Yabandeh via stack) HADOOP-11313. Adding a document about NativeLibraryChecker. (Tsuyoshi OZAWA via cnauroth) HADOOP-11287. Simplify UGI#reloginFromKeytab for Java 7+. (Li Lu via wheat9) HADOOP-10476) Bumping the findbugs version to 3.0.0. (wheat9) HADOOP-11410. Make the rpath of libhadoop.so configurable (cmccabe) HADOOP-11416. Move ChunkedArrayList into hadoop-common (cmccabe) HADOOP-10840. Fix OutOfMemoryError caused by metrics system in Azure File System. (Shanyu Zhao via cnauroth) HADOOP-11248. Add hadoop configuration to disable Azure Filesystem metrics collection. (Shanyu Zhao via cnauroth) HADOOP-11421. Add IOUtils#listDirectory (cmccabe) HADOOP-11427. ChunkedArrayList: fix removal via iterator and implement get (cmccabe) HADOOP-11430. Add GenericTestUtils#disableLog, GenericTestUtils#setLogLevel (cmccabe) HADOOP-11422. Check CryptoCodec is AES-CTR for Crypto input/output stream (Yi Liu via Colin P. McCabe) HADOOP-11213. Typos in html pages: SecureMode and EncryptedShuffle. (Wei Yan via kasha) HADOOP-11395. Add site documentation for Azure Storage FileSystem integration. (Chris Nauroth via Arpit Agarwal) HDFS-7555. Remove the support of unmanaged connectors in HttpServer2. (wheat9) HADOOP-11399. Java Configuration file and .xml files should be automatically cross-compared (rchiang via rkanter) HADOOP-11455. KMS and Credential CLI should request confirmation for deletion by default. (Charles Lamb via yliu) HADOOP-11390 Metrics 2 ganglia provider to include hostname in unresolved address problems. (Varun Saxena via stevel) HADOOP-11032. Replace use of Guava's Stopwatch with Hadoop's StopWatch (ozawa) HADOOP-11464. Reinstate support for launching Hadoop processes on Windows using Cygwin. (cnauroth) HADOOP-9992. Modify the NN loadGenerator to optionally run as a MapReduce job (Akshay Radia via brandonli) HADOOP-11465. Fix findbugs warnings in hadoop-gridmix. (Varun Saxena via Arpit Agarwal) HADOOP-11481. ClassCastException while using a key created by keytool to create encryption zone. (Charles Lamb via Colin P. McCabe) HADOOP-8757. Metrics should disallow names with invalid characters (rchiang via rkanter) HADOOP-11261 Set custom endpoint for S3A. (Thomas Demoor via stevel) HADOOP-11171 Enable using a proxy server to connect to S3a. (Thomas Demoor via stevel) HADOOP-11489 Dropping dependency on io.netty from hadoop-nfs' pom.xml (Ted Yu via ozawa) OPTIMIZATIONS HADOOP-11323. WritableComparator#compare keeps reference to byte array. (Wilfred Spiegelenburg via wang) HADOOP-11238. Update the NameNode's Group Cache in the background when possible (Chris Li via Colin P. McCabe) HADOOP-10809. hadoop-azure: page blob support. (Dexter Bradshaw, Mostafa Elhemali, Eric Hanson, and Mike Liddell via cnauroth) HADOOP-11188. hadoop-azure: automatically expand page blobs when they become full. (Eric Hanson via cnauroth) BUG FIXES HADOOP-11256. Some site docs have inconsistent appearance (Masatake Iwasaki via aw) HADOOP-11318. Update the document for hadoop fs -stat (aajisaka) HADOOP 11400. GraphiteSink does not reconnect to Graphite after 'broken pipe' (Kamil Gorlo via raviprak) HADOOP-11236. NFS: Fix javadoc warning in RpcProgram.java (Abhiraj Butala via harsh) HADOOP-11166. Remove ulimit from test-patch.sh. (wang) HDFS-7227. Fix findbugs warning about NP_DEREFERENCE_OF_READLINE_VALUE in SpanReceiverHost (cmccabe) HADOOP-11186. documentation should talk about hadoop.htrace.spanreceiver.classes, not hadoop.trace.spanreceiver.classes (cmccabe) HADOOP-11165. TestUTF8 fails when run against java 8. (Stephen Chu via cnauroth) HADOOP-10717. HttpServer2 should load jsp DTD from local jars instead of going remote. (Dapeng Sun via wheat9) HADOOP-11268. Update BUILDING.txt to remove the workaround for tools.jar. (Li Lu via wheat9) HADOOP-11230. Add missing dependency of bouncycastle for kms, httpfs, hdfs, MR and YARN. (Robert Kanter via wheat9) HADOOP-11269. Add java 8 profile for hadoop-annotations. (Li Lu via wheat9) HADOOP-11271. Use Time.monotonicNow() in Shell.java instead of Time.now() (vinayakumarb) HADOOP-11266. Remove no longer supported activation properties for packaging from pom. (Masatake Iwasaki via wheat9) HADOOP-11267. TestSecurityUtil fails when run with JDK8 because of empty principal names. (Stephen Chu via wheat9) HADOOP-10714. AmazonS3Client.deleteObjects() need to be limited to 1000 entries per call. (Juan Yu via atm) HADOOP-11272. Allow ZKSignerSecretProvider and ZKDelegationTokenSecretManager to use the same curator client. (Arun Suresh via atm) HADOOP-11187 NameNode - KMS communication fails after a long period of inactivity. (Arun Suresh via atm) HADOOP-11289. Fix typo in RpcUtil log message. (Charles Lamb via wheat9) HADOOP-11294. Nfs3FileAttributes should not change the values of rdev, nlink and size in the constructor. (Brandon Li via wheat9) HADOOP-11157. ZKDelegationTokenSecretManager never shuts down listenerThreadPool. (Arun Suresh via atm) HADOOP-11311. Restrict uppercase key names from being created with JCEKS. (wang) HADOOP-11309. System class pattern package.Foo should match package.Foo$Bar, too (Gera Shegalov via jlowe) HADOOP-11312. Fix unit tests to not use uppercase key names. (wang) HADOOP-11201. Hadoop Archives should support globs resolving to files. (Gera Shegalov via cnauroth) HADOOP-11322. key based ACL check in KMS always check KeyOpType.MANAGEMENT even actual KeyOpType is not MANAGEMENT. (Dian Fu via yliu) HADOOP-11300. KMS startup scripts must not display the keystore / truststore passwords. (Arun Suresh via wang) HADOOP-11257. Update "hadoop jar" documentation to warn against using it for launching yarn jars (iwasakims via cmccabe) HADOOP-11333. Fix deadlock in DomainSocketWatcher when the notification pipe is full (zhaoyunjiong via cmccabe) HADOOP-11337. KeyAuthorizationKeyProvider access checks need to be done atomically. (Dian Fu via wang) HADOOP-11344. KMS kms-config.sh sets a default value for the keystore password even in non-ssl setup. (Arun Suresh via wang) HADOOP-11342. KMS key ACL should ignore ALL operation for default key ACL and whitelist key ACL. (Dian Fu via wang) HADOOP-11332. KerberosAuthenticator#doSpnegoSequence should check if kerberos TGT is available in the subject. (Dian Fu via atm) HADOOP-11348. Remove unused variable from CMake error message for finding openssl (Dian Fu via Colin P. McCabe) HADOOP-11355. When accessing data in HDFS and the key has been deleted, a Null Pointer Exception is shown. (Arun Suresh via wang) HADOOP-11343. Overflow is not properly handled in caclulating final iv for AES CTR. (Jerry Chen via wang) HADOOP-11354. ThrottledInputStream doesn't perform effective throttling. (Ted Yu via jing9) HADOOP-11329. Add JAVA_LIBRARY_PATH to KMS startup options. (Arun Suresh via wang) HADOOP-11363 Hadoop maven surefire-plugin uses must set heap size. (stevel) HADOOP-10134 [JDK8] Fix Javadoc errors caused by incorrect or illegal tags in doc comments. (apurtell via stevel) HADOOP-11367. Fix warnings from findbugs 3.0 in hadoop-streaming. (Li Lu via wheat9) HADOOP-11369. Fix new findbugs warnings in hadoop-mapreduce-client, non-core directories. (Li Lu via wheat9) HADOOP-11368. Fix SSLFactory truststore reloader thread leak in KMSClientProvider. (Arun Suresh via wang) HADOOP-11372. Fix new findbugs warnings in mapreduce-examples. (Li Lu via wheat9) HADOOP-11273. TestMiniKdc failure: login options not compatible with IBM JDK. (Gao Zhong Liang via wheat9) HADOOP-11379. Fix new findbugs warnings in hadoop-auth*. (Li Lu via wheat9) HADOOP-11378. Fix new findbugs warnings in hadoop-kms. (Li Lu via wheat9) HADOOP-11349. RawLocalFileSystem leaks file descriptor while creating a file if creat succeeds but chmod fails. (Varun Saxena via Colin P. McCabe) HADOOP-11381. Fix findbugs warnings in hadoop-distcp, hadoop-aws, hadoop-azure, and hadoop-openstack. (Li Lu via wheat9) HADOOP-10482. Fix various findbugs warnings in hadoop-common. (wheat9) HADOOP-11388. Remove deprecated o.a.h.metrics.file.FileContext. (Li Lu via wheat9) HADOOP-11386. Replace \n by %n in format hadoop-common format strings. (Li Lu via wheat9) HADOOP-11211. mapreduce.job.classloader.system.classes semantics should be be order-independent. (Yitong Zhou via gera) HADOOP-11389. Clean up byte to string encoding issues in hadoop-common. (wheat9) HADOOP-11394. hadoop-aws documentation missing. (cnauroth) HADOOP-11396. Provide navigation in the site documentation linking to the Hadoop Compatible File Systems. (cnauroth) HADOOP-11412 POMs mention "The Apache Software License" rather than "Apache License". (Herve Boutemy via stevel) HADOOP-11321. copyToLocal cannot save a file to an SMB share unless the user has Full Control permissions. (cnauroth) HADOOP-11420. Use latest maven-site-plugin and replace link to svn with link to git. (Herve Boutemy via wheat9) HADOOP-10689. InputStream is not closed in AzureNativeFileSystemStore#retrieve(). (Chen He via cnauroth) HADOOP-10690. Lack of synchronization on access to InputStream in NativeAzureFileSystem#NativeAzureFsInputStream#close(). (Chen He via cnauroth) HADOOP-10946. Fix a bunch of typos in log messages (Ray Chiang via aw) HADOOP-11358. Tests for encryption/decryption with IV calculation overflow. (yliu) HADOOP-11125. Remove redundant tests in TestOsSecureRandom. (Masanori Oyama via wheat9) HADOOP-11385. Prevent cross site scripting attack on JMXJSONServlet. (wheat9) HADOOP-11409. FileContext.getFileContext can stack overflow if default fs misconfigured (Gera Shegalov via jlowe) HADOOP-11428. Remove obsolete reference to Cygwin in BUILDING.txt. (Arpit Agarwal via wheat9) HADOOP-11431. clean up redundant maven-site-plugin configuration. (Herve Boutemy via wheat9) HADOOP-11429. Findbugs warnings in hadoop extras. (Varun Saxena via wheat9) HADOOP-11414. FileBasedIPList#readLines() can leak file descriptors. (ozawa) HADOOP-11283. SequenceFile.Writer can leak file descriptors in DistCpV1#setup(). (Varun Saxena via ozawa) HADOOP-11448. Fix findbugs warnings in FileBasedIPList. (ozawa) HADOOP-11039. ByteBufferReadable API doc is inconsistent with the implementations. (Yi Liu via Colin P. McCabe) HADOOP-11446. S3AOutputStream should use shared thread pool to avoid OutOfMemoryError. (Ted Yu via stevel) HADOOP-11459. Fix recent findbugs in ActiveStandbyElector, NetUtils and ShellBasedIdMapping (vinayakumarb) HADOOP-11445. Bzip2Codec: Data block is skipped when position of newly created stream is equal to start of split (Ankit Kamboj via jlowe) HADOOP-11462. TestSocketIOWithTimeout needs change for PowerPC platform. (Ayappan via cnauroth) HADOOP-11350. The size of header buffer of HttpServer is too small when HTTPS is enabled. (Benoy Antony via wheat9) HADOOP-10542 Potential null pointer dereference in Jets3tFileSystemStore retrieveBlock(). (Ted Yu via stevel) HADOOP-10668. TestZKFailoverControllerStress#testExpireBackAndForth occasionally fails. (Ming Ma via cnauroth) Release 2.6.0 - 2014-11-18 INCOMPATIBLE CHANGES NEW FEATURES HADOOP-10433. Key Management Server based on KeyProvider API. (tucu) HADOOP-10893. isolated classloader on the client side (Sangjin Lee via jlowe) HADOOP-10400. Incorporate new S3A FileSystem implementation. (Jordan Mendelson and Dave Wang via atm) IMPROVEMENTS HADOOP-10808. Remove unused native code for munlock. (cnauroth) HADOOP-10815. Implement Windows equivalent of mlock. (cnauroth) HADOOP-7664. Remove warmings when overriding final parameter configuration if the override value is same as the final parameter value. (Ravi Prakash via suresh) HADOOP-10673. Update rpc metrics when the call throws an exception. (Ming Ma via jing9) HADOOP-10845. Add common tests for ACLs in combination with viewfs. (Stephen Chu via cnauroth) HADOOP-10839. Add unregisterSource() to MetricsSystem API. (Shanyu Zhao via cnauroth) HADOOP-10607. Create an API to separate credentials/password storage from applications (Larry McCay via omalley) HADOOP-10732. Fix locking in credential update. (Ted Yu via omalley) HADOOP-10733. Fix potential null dereference in CredShell. (Ted Yu via omalley) HADOOP-10610. Upgrade S3n s3.fs.buffer.dir to support multi directories. (Ted Malaska via atm) HADOOP-10817. ProxyUsers configuration should support configurable prefixes. (tucu) HADOOP-10755. Support negative caching of user-group mapping. (Lei Xu via wang) HADOOP-10855. Allow Text to be read with a known Length. (todd) HADOOP-10887. Add XAttrs to ViewFs and make XAttrs + ViewFileSystem internal dir behavior consistent. (Stephen Chu via wang) HADOOP-10882. Move DirectBufferPool into common util. (todd) HADOOP-8069. Enable TCP_NODELAY by default for IPC. (Todd Lipcon via Arpit Agarwal) HADOOP-10902. Deletion of directories with snapshots will not output reason for trash move failure. (Stephen Chu via wang) HADOOP-10900. CredentialShell args should use single-dash style. (wang) HADOOP-10903. Enhance hadoop classpath command to expand wildcards or write classpath into jar manifest. (cnauroth) HADOOP-10791. AuthenticationFilter should support externalizing the secret for signing and provide rotation support. (rkanter via tucu) HADOOP-10771. Refactor HTTP delegation support out of httpfs to common. (tucu) HADOOP-10835. Implement HTTP proxyuser support in HTTP authentication client/server libraries. (tucu) HADOOP-10820. Throw an exception in GenericOptionsParser when passed an empty Path. (Alex Holmes and Zhihai Xu via wang) HADOOP-10281. Create a scheduler, which assigns schedulables a priority level. (Chris Li via Arpit Agarwal) HADOOP-8944. Shell command fs -count should include human readable option (Jonathan Allen via aw) HADOOP-10231. Add some components in Native Libraries document (Akira AJISAKA via aw) HADOOP-10650. Add ability to specify a reverse ACL (black list) of users and groups. (Benoy Antony via Arpit Agarwal) HADOOP-10335. An ip whilelist based implementation to resolve Sasl properties per connection. (Benoy Antony via Arpit Agarwal) HADOOP-10975. org.apache.hadoop.util.DataChecksum should support calculating checksums in native code (James Thomas via Colin Patrick McCabe) HADOOP-10201. Add listing to KeyProvider API. (Larry McCay via omalley) HADOOP-10177. Create CLI tools for managing keys. (Larry McCay via omalley) HADOOP-10432. Refactor SSLFactory to expose static method to determine HostnameVerifier. (tucu) HADOOP-10429. KeyStores should have methods to generate the materials themselves, KeyShell should use them. (tucu) HADOOP-10427. KeyProvider implementations should be thread safe. (tucu) HADOOP-10428. JavaKeyStoreProvider should accept keystore password via configuration falling back to ENV VAR. (tucu) HADOOP-10430. KeyProvider Metadata should have an optional description, there should be a method to retrieve the metadata from all keys. (tucu) HADOOP-10431. Change visibility of KeyStore.Options getter methods to public. (tucu) HADOOP-10534. KeyProvider getKeysMetadata should take a list of names rather than returning all keys. (omalley) HADOOP-10719. Add generateEncryptedKey and decryptEncryptedKey methods to KeyProvider. (asuresh via tucu) HADOOP-10817. ProxyUsers configuration should support configurable prefixes. (tucu) HADOOP-10881. Clarify usage of encryption and encrypted encryption key in KeyProviderCryptoExtension. (wang) HADOOP-10770. KMS add delegation token support. (tucu) HADOOP-10698. KMS, add proxyuser support. (tucu) HADOOP-8896. Javadoc points to Wrong Reader and Writer classes in SequenceFile (Ray Chiang via aw) HADOOP-10998. Fix bash tab completion code to work (Jim Hester via aw) HADOOP-10880. Move HTTP delegation tokens out of URL querystring to a header. (tucu) HADOOP-11005. Fix HTTP content type for ReconfigurationServlet. (Lei Xu via wang) HADOOP-10814. Update Tomcat version used by HttpFS and KMS to latest 6.x version. (rkanter via tucu) HADOOP-10994. KeyProviderCryptoExtension should use CryptoCodec for generation/decryption of keys. (tucu) HADOOP-11021. Configurable replication factor in the hadoop archive command. (Zhe Zhang via wang) HADOOP-11030. Define a variable jackson.version instead of using constant at multiple places. (Juan Yu via kasha) HADOOP-10990. Add missed NFSv3 request and response classes (brandonli) HADOOP-10863. KMS should have a blacklist for decrypting EEKs. (asuresh via tucu) HADOOP-11054. Add a KeyProvider instantiation based on a URI. (tucu) HADOOP-11015. Http server/client utils to propagate and recreate Exceptions from server to client. (tucu) HADOOP-11060. Create a CryptoCodec test that verifies interoperability between the JCE and OpenSSL implementations. (hitliuyi via tucu) HADOOP-11070. Create MiniKMS for testing. (tucu) HADOOP-11057. checknative command to probe for winutils.exe on windows. (Xiaoyu Yao via cnauroth) HADOOP-10758. KMS: add ACLs on per key basis. (tucu) HADOOP-9540. Expose the InMemoryS3 and S3N FilesystemStores implementations for Unit testing. (Steve Lougran) HADOOP-10373 create tools/hadoop-amazon for aws/EMR support (stevel) HADOOP-11074. Move s3-related FS connector code to hadoop-aws (David S. Wang via Colin Patrick McCabe) HADOOP-11091. Eliminate old configuration parameter names from s3a (David S. Wang via Colin Patrick McCabe) HADOOP-10868. AuthenticationFilter should support externalizing the secret for signing and provide rotation support. (rkanter via tucu) HADOOP-10922. User documentation for CredentialShell. (Larry McCay via wang) HADOOP-11016. KMS should support signing cookies with zookeeper secret manager. (tucu) HADOOP-11106. Document considerations of HAR and Encryption. (clamb via wang) HADOOP-10970. Cleanup KMS configuration keys. (wang) HADOOP-11017. KMS delegation token secret manager should be able to use zookeeper as store. (asuresh via tucu) HADOOP-11009. Add Timestamp Preservation to DistCp (Gary Steelman via aw) HADOOP-11101. How about inputstream close statement from catch block to finally block in FileContext#copy() ( skrho via vinayakumarb ) HADOOP-8808. Update FsShell documentation to mention deprecation of some of the commands, and mention alternatives (Akira AJISAKA via aw) HADOOP-10954. Adding site documents of hadoop-tools (Masatake Iwasaki via aw) HADOOP-10731. Remove @date JavaDoc comment in ProgramDriver class (Henry Saputra via aw) HADOOP-11153. Make number of KMS threads configurable. (wang) HADOOP-11007. Reinstate building of ant tasks support. (jlowe via kihwal) HADOOP-11178. Fix findbugs exclude file. (Arun Suresh via wang) HADOOP-11174. Delegation token for KMS should only be got once if it already exists. (Yi Liu via wang) HADOOP-11184. Update Hadoop's lz4 to version r123. (cmccabe) HADOOP-11181. Generalized o.a.h.s.t.d.DelegationTokenManager to handle all sub-classes of AbstractDelegationTokenIdentifier. (zjshen) HADOOP-11207. Enhanced common DelegationTokenAuthenticationHandler to support proxy-users on Delegation-token management operations. (Zhijie Shen via vinodkv) HADOOP-11216. Improve Openssl library finding. (cmccabe via yliu) HADOOP-11254. Changed visibility of AccessControlList to be public for consumption by ecosystem. (Zhijie Shen via vinodkv) HADOOP-11286. Copied LimitInputStream from guava-0.14 to hadoop to avoid issues with newer versions of guava in applications. (Christopher Tubbs via acmurthy) OPTIMIZATIONS HADOOP-10838. Byte array native checksumming. (James Thomas via todd) HADOOP-10696. Add optional attributes to KeyProvider Options and Metadata. (tucu) HADOOP-10695. KMSClientProvider should respect a configurable timeout. (yoderme via tucu) HADOOP-10757. KeyProvider KeyVersion should provide the key name. (asuresh via tucu) HADOOP-10769. Create KeyProvider extension to handle delegation tokens. (Arun Suresh via atm) HADOOP-10812. Delegate KeyProviderExtension#toString to underlying KeyProvider. (wang) HADOOP-10736. Add key attributes to the key shell. (Mike Yoder via wang) HADOOP-10824. Refactor KMSACLs to avoid locking. (Benoy Antony via umamahesh) HADOOP-10841. EncryptedKeyVersion should have a key name property. (asuresh via tucu) HADOOP-10842. CryptoExtension generateEncryptedKey method should receive the key name. (asuresh via tucu) HADOOP-10750. KMSKeyProviderCache should be in hadoop-common. (asuresh via tucu) HADOOP-10720. KMS: Implement generateEncryptedKey and decryptEncryptedKey in the REST API. (asuresh via tucu) HADOOP-10891. Add EncryptedKeyVersion factory method to KeyProviderCryptoExtension. (wang) HADOOP-10756. KMS audit log should consolidate successful similar requests. (asuresh via tucu) HADOOP-10793. KeyShell args should use single-dash style. (wang) HADOOP-10936. Change default KeyProvider bitlength to 128. (wang) HADOOP-10224. JavaKeyStoreProvider has to protect against corrupting underlying store. (asuresh via tucu) HADOOP-10282. Create a FairCallQueue: a multi-level call queue which schedules incoming calls and multiplexes outgoing calls. (Chris Li via Arpit Agarwal) HADOOP-10833. Remove unused cache in UserProvider. (Benoy Antony) HADOOP-11112. TestKMSWithZK does not use KEY_PROVIDER_URI. (tucu via wang) HADOOP-11111 MiniKDC to use locale EN_US for case conversions. (stevel) HADOOP-10681. Remove unnecessary synchronization from Snappy & Zlib codecs. (Gopal Vijayaraghavan via acmurthy) HADOOP-11194. Ignore .keep files. (kasha) HADOOP-11195. Move Id-Name mapping in NFS to the hadoop-common area for better maintenance (Yongjun Zhang via brandonli) HADOOP-11247. Fix a couple javac warnings in NFS. (Brandon Li via wheat9) BUG FIXES HADOOP-11182. GraphiteSink emits wrong timestamps (Sascha Coenen via raviprak) HADOOP-10781. Unportable getgrouplist() usage breaks FreeBSD (Dmitry Sivachenko via Colin Patrick McCabe) HADOOP-10507. FsShell setfacl can throw ArrayIndexOutOfBoundsException when no perm is specified. (Stephen Chu and Sathish Gurram via cnauroth) HADOOP-10780. hadoop_user_info_alloc fails on FreeBSD due to incorrect sysconf use (Dmitry Sivachenko via Colin Patrick McCabe) HADOOP-10810. Clean up native code compilation warnings. (cnauroth) HADOOP-9921. daemon scripts should remove pid file on stop call after stop or process is found not running ( vinayakumarb ) HADOOP-10591. Compression codecs must used pooled direct buffers or deallocate direct buffers when stream is closed (cmccabe) HADOOP-10857. Native Libraries Guide doen't mention a dependency on openssl-development package (ozawa via cmccabe) HADOOP-10866. RawLocalFileSystem fails to read symlink targets via the stat command when the format of the stat command uses non-curly quotes (yzhang via cmccabe) HADOOP-10830. Missing lock in JavaKeyStoreProvider.createCredentialEntry. (Benoy Antony via umamahesh) HADOOP-10928. Incorrect usage on `hadoop credential list`. (Josh Elser via wang) HADOOP-10927. Fix CredentialShell help behavior and error codes. (Josh Elser via wang) HADOOP-10933. FileBasedKeyStoresFactory Should use Configuration.getPassword for SSL Passwords. (lmccay via tucu) HADOOP-10905. LdapGroupsMapping Should use configuration.getPassword for SSL and LDAP Passwords. (lmccay via brandonli) HADOOP-10931 compile error on tools/hadoop-openstack (xukun via stevel) HADOOP-10929. Typo in Configuration.getPasswordFromCredentialProviders (lmccay via brandonli) HADOOP-10402. Configuration.getValByRegex does not substitute for variables. (Robert Kanter via kasha) HADOOP-10851. NetgroupCache does not remove group memberships. (Benoy Antony via Arpit Agarwal) HADOOP-10962. Flags for posix_fadvise are not valid in some architectures (David Villegas via Colin Patrick McCabe) HADOOP-10966. Hadoop Common native compilation broken in windows. (David Villegas via Arpit Agarwal) HADOOP-10843. TestGridmixRecord unit tests failure on PowerPC (Jinghui Wang via Colin Patrick McCabe) HADOOP-10121. Fix javadoc spelling for HadoopArchives#writeTopLevelDirs (Akira AJISAKA via aw) HADOOP-10964. Small fix for NetworkTopologyWithNodeGroup#sortByDistance. (Yi Liu via wang) HADOOP-10059. RPC authentication and authorization metrics overflow to negative values on busy clusters (Tsuyoshi OZAWA and Akira AJISAKA via jlowe) HADOOP-10973. Native Libraries Guide contains format error. (Peter Klavins via Arpit Agarwal) HADOOP-10972. Native Libraries Guide contains mis-spelt build line (Peter Klavins via aw) HADOOP-10873. Fix dead link in Configuration javadoc (Akira AJISAKA via aw) HADOOP-10968. hadoop native build fails to detect java_libarch on ppc64le (Dinar Valeev via Colin Patrick McCabe) HADOOP-10141. Create KeyProvider API to separate encryption key storage from the applications. (omalley) HADOOP-10237. JavaKeyStoreProvider needs to set keystore permissions correctly. (Larry McCay via omalley) HADOOP-10244. TestKeyShell improperly tests the results of delete (Larry McCay via omalley) HADOOP-10583. bin/hadoop key throws NPE with no args and assorted other fixups. (clamb via tucu) HADOOP-10586. KeyShell doesn't allow setting Options via CLI. (clamb via tucu) HADOOP-10645. TestKMS fails because race condition writing acl files. (tucu) HADOOP-10611. KMS, keyVersion name should not be assumed to be keyName@versionNumber. (tucu) HADOOP-10816. KeyShell returns -1 on error to the shell, should be 1. (Mike Yoder via wang) HADOOP-10826. Iteration on KeyProviderFactory.serviceLoader is thread-unsafe. (benoyantony viat tucu) HADOOP-10920. site plugin couldn't parse hadoop-kms index.apt.vm. (Akira Ajisaka via wang) HADOOP-10937. Need to set version name correctly before decrypting EEK. (Arun Suresh via wang) HADOOP-10925. Compilation fails in native link0 function on Windows. (cnauroth) HADOOP-10918. JMXJsonServlet fails when used within Tomcat. (tucu) HADOOP-10939. Fix TestKeyProviderFactory testcases to use default 128 bit length keys. (Arun Suresh via wang) HADOOP-10862. Miscellaneous trivial corrections to KMS classes. (asuresh via tucu) HADOOP-10967. Improve DefaultCryptoExtension#generateEncryptedKey performance. (hitliuyi via tucu) HADOOP-10488. TestKeyProviderFactory fails randomly. (tucu) HADOOP-10989. Work around buggy getgrouplist() implementations on Linux that return 0 on failure. (cnauroth) HADOOP-8815. RandomDatum needs to override hashCode(). (Brandon Li via suresh) HADOOP-11056. OsSecureRandom.setConf() might leak file descriptors. (yzhang via cmccabe) HADOOP-11040. Return value of read(ByteBuffer buf) in CryptoInputStream is incorrect in some cases. (Yi Liu via wang) HADOOP-11140. hadoop-aws only need test-scoped dependency on hadoop-common's tests jar. (Juan Yu via wang) HADOOP-1110. JavaKeystoreProvider should not report a key as created if it was not flushed to the backing file. HADOOP-11130. NFS updateMaps OS check is reversed (brandonli) HADOOP-11113. Namenode not able to reconnect to KMS after KMS restart. (Arun Suresh via wang) HADOOP-11160. Fix typo in nfs3 server duplicate entry reporting. (Charles Lamb via wheat9) HADOOP-11151. Automatically refresh auth token and retry on auth failure. (Arun Suresh via wang) HADOOP-11168. Remove duplicated entry "dfs.webhdfs.enabled" in the useri doc. (Yi Liu via wheat9) HADOOP-11169. Fix DelegationTokenAuthenticatedURL to pass the connection Configurator to the authenticator. (Arun Suresh via wang) HADOOP-10404. Some accesses to DomainSocketWatcher#closed are not protected by the lock (cmccabe) HADOOP-11161. Expose close method in KeyProvider to give clients of Provider implementations a hook to release resources. (Arun Suresh via atm) HADOOP-11133. Should trim the content of keystore password file for JavaKeyStoreProvider (Yi Liu via umamahesh) HADOOP-11193. Fix uninitialized variables in NativeIO.c (Xiaoyu Yao via wheat9) HADOOP-11176. KMSClientProvider authentication fails when both currentUgi and loginUgi are a proxied user. (Arun Suresh via atm) HADOOP-11198. Fix typo in javadoc for FileSystem#listStatus(). (Li Lu via wheat9) HADOOP-11253. Hadoop streaming test TestStreamXmlMultipleRecords fails on Windows. (Varun Vasudev via wheat9) BREAKDOWN OF HDFS-6134 AND HADOOP-10150 SUBTASKS AND RELATED JIRAS HADOOP-10734. Implement high-performance secure random number sources. (Yi Liu via Colin Patrick McCabe) HADOOP-10603. Crypto input and output streams implementing Hadoop stream interfaces. (Yi Liu and Charles Lamb) HADOOP-10628. Javadoc and few code style improvement for Crypto input and output streams. (Yi Liu via clamb) HADOOP-10632. Minor improvements to Crypto input and output streams. (Yi Liu) HADOOP-10635. Add a method to CryptoCodec to generate SRNs for IV. (Yi Liu) HADOOP-10653. Add a new constructor for CryptoInputStream that receives current position of wrapped stream. (Yi Liu) HADOOP-10662. NullPointerException in CryptoInputStream while wrapped stream is not ByteBufferReadable. Add tests using normal stream. (Yi Liu) HADOOP-10713. Refactor CryptoCodec#generateSecureRandom to take a byte[]. (wang via yliu) HADOOP-10693. Implementation of AES-CTR CryptoCodec using JNI to OpenSSL. (Yi Liu via cmccabe) HADOOP-10803. Update OpensslCipher#getInstance to accept CipherSuite#name format. (Yi Liu) HADOOP-10735. Fall back AesCtrCryptoCodec implementation from OpenSSL to JCE if non native support. (Yi Liu) HADOOP-10870. Failed to load OpenSSL cipher error logs on systems with old openssl versions (cmccabe) HADOOP-10853. Refactor get instance of CryptoCodec and support create via algorithm/mode/padding. (Yi Liu) HADOOP-10919. Copy command should preserve raw.* namespace extended attributes. (clamb) HDFS-6873. Constants in CommandWithDestination should be static. (clamb) HADOOP-10871. incorrect prototype in OpensslSecureRandom.c (cmccabe) HADOOP-10886. CryptoCodec#getCodecclasses throws NPE when configurations not loaded. (umamahesh) -- HADOOP-10911. hadoop.auth cookie after HADOOP-10710 still not proper according to RFC2109. (gchanan via tucu) HADOOP-11036. Add build directory to .gitignore (Tsuyoshi OZAWA via aw) HADOOP-11012. hadoop fs -text of zero-length file causes EOFException (Eric Payne via jlowe) HADOOP-11063. KMS cannot deploy on Windows, because class names are too long. (cnauroth) HADOOP-11067. warning message 'ssl.client.truststore.location has not been set' gets printed for hftp command. (Xiaoyu Yao via Arpit Agarwal) HADOOP-11069. KMSClientProvider should use getAuthenticationMethod() to determine if in proxyuser mode or not. (tucu) HADOOP-11073. Credential Provider related Unit Tests Failure on Windows. (Xiaoyu Yao via cnauroth) HADOOP-11071. KMSClientProvider should drain the local generated EEK cache on key rollover. (tucu) HADOOP-10925. Compilation fails in native link0 function on Windows. (cnauroth) HADOOP-11077. NPE if hosts not specified in ProxyUsers. (gchanan via tucu) HADOOP-9989. Bug introduced in HADOOP-9374, which parses the -tokenCacheFile as binary file but set it to the configuration as JSON file. (zxu via tucu) HADOOP-11085. Excessive logging by org.apache.hadoop.util.Progress when value is NaN (Mit Desai via jlowe) HADOOP-11083. After refactoring of HTTP proxyuser to common, doAs param is case sensitive. (tucu) HADOOP-11088. Unittest TestKeyShell, TestCredShell and TestKMS assume UNIX path separator for JECKS key store path. (Xiaoyu Yao via cnauroth) HADOOP-11096. KMS: KeyAuthorizationKeyProvider should verify the keyversion belongs to the keyname on decrypt. (tucu) HADOOP-11097. kms docs say proxyusers, not proxyuser for config params. (clamb via tucu) HADOOP-11062. CryptoCodec testcases requiring OpenSSL should be run only if -Pnative is used. (asuresh via tucu) HADOOP-11099. KMS return HTTP UNAUTHORIZED 401 on ACL failure. (tucu) HADOOP-11105. MetricsSystemImpl could leak memory in registered callbacks. (Chuan Liu via cnauroth) HADOOP-10982. KMS: Support for multiple Kerberos principals. (tucu) HADOOP-11109. Site build is broken. (Jian He via atm) HADOOP-10946. Fix a bunch of typos in log messages (Ray Chiang via aw) HADOOP-10131. NetWorkTopology#countNumOfAvailableNodes() is returning wrong value if excluded nodes passed are not part of the cluster tree (vinayakumarb) HADOOP-11064. UnsatisifedLinkError with hadoop 2.4 JARs on hadoop-2.6 due to NativeCRC32 method changes. (cnauroth) HADOOP-11048. user/custom LogManager fails to load if the client classloader is enabled (Sangjin Lee via jlowe) HADOOP-10552. Fix usage and example at FileSystemShell.apt.vm (Kenji Kikushima via aw) HADOOP-11143 NetUtils.wrapException loses inner stack trace on BindException (stevel) HADOOP-11049. javax package system class default is too broad (Sangjin Lee via jlowe) HADOOP-11154. Update BUILDING.txt to state that CMake 3.0 or newer is required on Mac. (cnauroth) HADOOP-11145. TestFairCallQueue fails. (Akira AJISAKA via cnauroth) HADOOP-11117 UGI HadoopLoginModule doesn't catch & wrap all kerberos-related exceptions (stevel) HADOOP-11163. MetricsSystemImpl may miss a registered source. (Chuan Liu via cnauroth) HADOOP-11179. Java untar should handle the case that the file entry comes without its parent directory entry. (Craig Welch via zjshen) HADOOP-11175. Fix several issues of hadoop security configuration in user doc. (Yi Liu via cnauroth) HADOOP-11122. Fix findbugs in ZK DelegationTokenSecretManagers. (Arun Suresh via kasha) HADOOP-11228. Winutils task: unsecure path should not call AddNodeManagerAndUserACEsToObject. (Remus Rusanu via jianhe) HADOOP-11170. ZKDelegationTokenSecretManager fails to renewToken created by a peer. (Arun Suresh and Gregory Chanan via kasha) HADOOP-11217. Disable SSLv3 in KMS. (Robert Kanter via kasha) HADOOP-11068. Match hadoop.auth cookie format to jetty output. (Gregory Chanan via cnauroth) HADOOP-9740. Fix FsShell '-text' command to be able to read Avro files stored in HDFS and other filesystems. (Allan Yan via jlowe) HADOOP-11250. fix endmacro of set_find_shared_library_without_version in CMakeLists (Yi Liu via Colin P. McCabe) HADOOP-11221. IdentityHashStore assumes System.identityHashCode() is non-negative. (Jinghui Wang via szetszwo) HADOOP-11241. Fixed intermittent TestNMSimulator failure due to timing issue. (Varun Vasudev via zjshen) HADOOP-11265. Credential and Key Shell Commands not available on Windows. (Larry McCay via cnauroth) HADOOP-11280. TestWinUtils#testChmod fails after removal of NO_PROPAGATE_INHERIT_ACE. (cnauroth) HADOOP-11282. Skip NFS TestShellBasedIdMapping tests that are irrelevant on Windows. (cnauroth) HADOOP-9576. Changed NetUtils#wrapException to throw EOFException instead of wrapping it as IOException. (Steve Loughran via jianhe) Release 2.5.2 - 2014-11-19 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-11243. SSLFactory shouldn't allow SSLv3. (Wei Yan via kasha) HADOOP-11260. Patch up Jetty to disable SSLv3. (Mike Yoder via kasha) HADOOP-11307. create-release script should run git clean first (kasha) Release 2.5.1 - 2014-09-05 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-10956. Fix create-release script to include docs and necessary txt files. (kasha) HADOOP-10717. HttpServer2 should load jsp DTD from local jars instead of going remote. (Dapeng Sun via wheat9) OPTIMIZATIONS BUG FIXES HADOOP-11001. Fix test-patch to work with the git repo. (kasha) HADOOP-11065. Rat check should exclude "**/build/**". (kasha) Release 2.5.0 - 2014-08-11 INCOMPATIBLE CHANGES NEW FEATURES HADOOP-10498. Add support for proxy server. (daryn) HADOOP-9704. Write metrics sink plugin for Hadoop/Graphite (Chu Tong, Alex Newman and Babak Behzad via raviprak) HADOOP-8943. Support multiple group mapping providers. (Kai Zheng via brandonli) HADOOP-9361 Strictly define the expected behavior of filesystem APIs and write tests to verify compliance (stevel) IMPROVEMENTS HADOOP-10451. Remove unused field and imports from SaslRpcServer. (Benoy Antony via jing9) HADOOP-10345. Sanitize the the inputs (groups and hosts) for the proxyuser configuration. (Benoy Antony via jing9) HADOOP-10454. Provide FileContext version of har file system. (Kihwal Lee via jeagles) HADOOP-10104. Update jackson to 1.9.13 (Akira Ajisaka via stevel) HADOOP-10503. Move junit up to v 4.11. (cnauroth) HADOOP-10535. Make the retry numbers in ActiveStandbyElector configurable. (jing9) HADOOP-10322. Add ability to read principal names from a keytab. (Benoy Antony and Daryn Sharp via kihwal) HADOOP-10549. MAX_SUBST and varPat should be final in Configuration.java. (Gera Shegalov via cnauroth) HADOOP-10471. Reduce the visibility of constants in ProxyUsers. (Benoy Antony via wheat9) HADOOP-10556. Add toLowerCase support to auth_to_local rules for service name. (tucu) HADOOP-10467. Enable proxyuser specification to support list of users in addition to list of groups (Benoy Antony via Arpit Agarwal) HADOOP-10158. SPNEGO should work with multiple interfaces/SPNs. (daryn via kihwal) HADOOP-10572. Example NFS mount command must pass noacl as it isn't supported by the server yet. (Harsh J via brandonli) HADOOP-10588. Workaround for jetty6 acceptor startup issue. (kihwal) HADOOP-10609. .gitignore should ignore .orig and .rej files. (kasha) HADOOP-10614. CBZip2InputStream is not threadsafe (Xiangrui Meng via Sandy Ryza) HADOOP-10618. Remove SingleNodeSetup.apt.vm. (Akira Ajisaka via Arpit Agarwal) HADOOP-10566. Refactor proxyservers out of ProxyUsers. (Benoy Antony via Arpit Agarwal) HDFS-9968. ProxyUsers does not work with NetGroups. (Benoy Antony via Devaraj Das) HADOOP-10448. Support pluggable mechanism to specify proxy user settings. (Benoy Antony via Arpit Agarwal) HADOOP-9555. HA functionality that uses ZooKeeper may experience inadvertent TCP RST and miss session expiration event due to bug in client connection management. (cnauroth) HADOOP-10376. Refactor refresh*Protocols into a single generic refreshConfigProtocol. (Chris Li via Arpit Agarwal) HADOOP-6350. Documenting Hadoop metrics. (Akira Ajisaka via Arpit Agarwal) HADOOP-10691. Improve the readability of 'hadoop fs -help'. (Lei Xu via wang) HADOOP-10688. Expose thread-level FileSystem StatisticsData (Sandy Ryza) HADOOP-10657. Have RetryInvocationHandler log failover attempt at INFO level. (Ming Ma via jing9) HADOOP-10666. Remove Copyright /d/d/d/d Apache Software Foundation from the source files license header. (Henry Saputra via wang) HADOOP-10557. FsShell -cp -pa option for preserving extended ACLs. (Akira Ajisaka via cnauroth) HADOOP-10279. Create multiplexer, a requirement for the fair queue. (Chris Li via Arpit Agarwal) HADOOP-10659. Refactor AccessControlList to reuse utility functions and to improve performance. (Benoy Antony via Arpit Agarwal) HADOOP-10665. Make Hadoop Authentication Handler loads case in-sensitive (Benoy Antony via vinayakumarb) HADOOP-10652. Refactor Proxyusers to use AccessControlList. (Benoy Antony via Arpit Agarwal) HADOOP-10747. Support configurable retries on SASL connection failures in RPC client. (cnauroth) HADOOP-10754. Reenable several HA ZooKeeper-related tests on Windows. (cnauroth) HADOOP-10565. Support IP ranges (CIDR) in proxyuser.hosts. (Benoy Antony via Arpit Agarwal) HADOOP-10649. Allow overriding the default ACL for service authorization (Benoy Antony via Arpit Agarwal) HADOOP-10767. Clean up unused code in Ls shell command. (cnauroth) HADOOP-9651 Filesystems to throw FileAlreadyExistsException in createFile(path, overwrite=false) when the file exists (stevel) HADOOP-9495 Define behaviour of Seekable.seek(), write tests, fix all hadoop implementations for compliance HADOOP-10312 Shell.ExitCodeException to have more useful toString (stevel) HADOOP-10782. Fix typo in DataChecksum class. (Jingguo Yao via suresh) HADOOP-10896. Update compatibility doc to capture visibility of un-annotated classes/ methods. (kasha) OPTIMIZATIONS HADOOP-10674. Improve PureJavaCrc32 performance and use java.util.zip.CRC32 for Java 7 and above. (szetszwo) BUG FIXES HADOOP-10378. Typo in help printed by hdfs dfs -help. (Mit Desai via suresh) HADOOP-10418. SaslRpcClient should not assume that remote principals are in the default_realm. (atm) HADOOP-10426. Declare CreateOpts.getOpt(..) with generic type argument, removes unused FileContext.getFileStatus(..) and fixes various javac warnings. (szetszwo) HADOOP-10439. Fix compilation error in branch-2 after HADOOP-10426. (wheat9) HADOOP-10414. Incorrect property name for RefreshUserMappingProtocol in hadoop-policy.xml. (Joey Echeverria via atm) HADOOP-10459. distcp V2 doesn't preserve root dir's attributes when -p is specified. (Yongjun Zhang via atm) HADOOP-10462. DF#getFilesystem is not parsing the command output. (Akira AJISAKA via umamahesh) HADOOP-10468. TestMetricsSystemImpl.testMultiThreadedPublish fails intermediately. (wheat9) HADOOP-10475. ConcurrentModificationException in AbstractDelegationTokenSelector.selectToken(). (jing9) HADOOP-10350. BUILDING.txt should mention openssl dependency required for hadoop-pipes (Vinayakumar B) HADOOP-10495. TestFileUtil fails on Windows due to bad permission assertions. (cnauroth) HADOOP-10496. Metrics system FileSink can leak file descriptor. (cnauroth) HADOOP-10500. TestDoAsEffectiveUser fails on JDK7 due to failure to reset proxy user configuration. (cnauroth) HADOOP-10499. Remove unused parameter from ProxyUsers.authorize(). (Benoy Antony via cnauroth) HADOOP-9919. Update hadoop-metrics2.properties examples to Yarn. (Akira AJISAKA via suresh) HADOOP-10526. Chance for Stream leakage in CompressorStream. (Rushabh Shah via kihwal) HADOOP-10251. Both NameNodes could be in STANDBY State if SNN network is unstable (Vinayakumar B via umamahesh) HADOOP-10531. hadoop-config.sh - bug in --hosts argument. (Sebastien Barrier via wang) HADOOP-10539. Provide backward compatibility for ProxyUsers.authorize() call. (Benoy Antony via cnauroth) HADOOP-10540. Datanode upgrade in Windows fails with hardlink error. (Chris Nauroth and Arpit Agarwal) HADOOP-10508. RefreshCallQueue fails when authorization is enabled. (Chris Li via wheat9) HADOOP-10547. Give SaslPropertiesResolver.getDefaultProperties() public scope. (Benoy Antony via Arpit Agarwal) HADOOP-10543. RemoteException's unwrapRemoteException method failed for PathIOException. (Yongjun Zhang via atm) HADOOP-10568. Add s3 server-side encryption. (David S. Wang via atm) HADOOP-10541. InputStream in MiniKdc#initKDCServer for minikdc.ldiff is not closed. (Swarnim Kulkarni via cnauroth) HADOOP-10517. InputStream is not closed in two methods of JarFinder. (Ted Yu via cnauroth) HADOOP-10581. TestUserGroupInformation#testGetServerSideGroups fails because groups stored in Set and ArrayList are compared. (Mit Desai via kihwal) HADOOP-10585. Retry polices ignore interrupted exceptions (Daryn Sharp via jeagles) HADOOP-10401. ShellBasedUnixGroupsMapping#getGroups does not always return primary group first (Akira AJISAKA via Colin Patrick McCabe) HADOOP-10489. UserGroupInformation#getTokens and UserGroupInformation #addToken can lead to ConcurrentModificationException (Robert Kanter via atm) HADOOP-10625. Trim configuration names when putting/getting them to properties. (Wangda Tan via xgong) HADOOP-10602. Documentation has broken "Go Back" hyperlinks. (Akira AJISAKA via cnauroth) HADOOP-10639. FileBasedKeyStoresFactory initialization is not using default for SSL_REQUIRE_CLIENT_CERT_KEY. (tucu) HADOOP-10638. Updating hadoop-daemon.sh to work as expected when nfs is started as a privileged user. (Manikandan Narayanaswamy via atm) HADOOP-10342. Add a new method to UGI to use a Kerberos login subject to build a new UGI. (Larry McCay via omalley) HADOOP-10630. Possible race condition in RetryInvocationHandler. (jing9) HADOOP-10658. SSLFactory expects truststores being configured. (tucu via atm) HADOOP-10647. String Format Exception in SwiftNativeFileSystemStore.java. (Gene Kim via stevel) HADOOP-9099. NetUtils.normalizeHostName fails on domains where UnknownHost resolves to an IP address. (Ivan Mitic via suresh) HADOOP-10664. TestNetUtils.testNormalizeHostName fails. (atm) HADOOP-10656. The password keystore file is not picked by LDAP group mapping (brandonli) HADOOP-10622. Shell.runCommand can deadlock (Gera Shegalov via jlowe) HADOOP-10686. Writables are not always configured. (Abraham Elmahrek via kasha) HADOOP-10678. SecurityUtil has unnecessary synchronization on collection used for only tests. (Benoy Antony via cnauroth) HADOOP-10683. Users authenticated with KERBEROS are recorded as being authenticated with SIMPLE. (Benoy Antony via cnauroth) HADOOP-10702. KerberosAuthenticationHandler does not log the principal names correctly. (Benoy Antony via cnauroth) HADOOP-10699. Fix build native library on mac osx (Binglin Chang via jlowe) HADOOP-10660. GraphiteSink should implement Closeable (Chen He and Ted Yu via raviprak) HADOOP-10716. Cannot use more than 1 har filesystem. (Rushabh Shah via cnauroth) HADOOP-9559. When metrics system is restarted MBean names get incorrectly flagged as dupes. (Mostafa Elhemali and Mike Liddell via cnauroth) HADOOP-10746. TestSocketIOWithTimeout#testSocketIOWithTimeout fails on Power PC. (Jinghui Wang via Arpit Agarwal) HADOOP-9705. FsShell cp -p does not preserve directory attibutes. (Akira AJISAKA via cnauroth) HADOOP-10739. Renaming a file into a directory containing the same filename results in a confusing I/O error (chang li via jlowe) HADOOP-10533 S3 input stream NPEs in MapReduce join (stevel) HADOOP-10419 BufferedFSInputStream NPEs on getPos() on a closed stream (stevel) HADOOP-10801 dead link in site.xml (Akira AJISAKA via stevel) HADOOP-10590. ServiceAuthorizationManager is not threadsafe. (Benoy Antony via vinayakumarb) HADOOP-10711. Cleanup some extra dependencies from hadoop-auth. (rkanter via tucu) HADOOP-10479. Fix new findbugs warnings in hadoop-minikdc. (Swarnim Kulkarni via wheat9) HADOOP-10715. Remove public GraphiteSink#setWriter (Babak Behzad via raviprak) HADOOP-10710. hadoop.auth cookie is not properly constructed according to RFC2109. (Juan Yu via tucu) HADOOP-10864. Tool documentenation is broken. (Akira Ajisaka via Arpit Agarwal) HADOOP-10872. TestPathData fails intermittently with "Mkdirs failed to create d1". (Yongjun Zhang via Arpit Agarwal) HADOOP-10890. TestDFVariations.testMount fails intermittently. (Yongjun Zhang via Arpit Agarwal) HADOOP-10894. Fix dead link in ToolRunner documentation. (Akira Ajisaka via Arpit Agarwal) HADOOP-10910. Increase findbugs maxHeap size. (wang) BREAKDOWN OF HADOOP-10514 SUBTASKS AND RELATED JIRAS HADOOP-10520. Extended attributes definition and FileSystem APIs for extended attributes. (Yi Liu via wang) HADOOP-10546. Javadoc and other small fixes for extended attributes in hadoop-common. (Charles Lamb via wang) HADOOP-10521. FsShell commands for extended attributes. (Yi Liu via wang) HADOOP-10548. Improve FsShell xattr error handling and other fixes. (Charles Lamb via umamahesh) HADOOP-10567. Shift XAttr value encoding code out for reuse. (Yi Liu via umamahesh) HADOOP-10621. Remove CRLF for xattr value base64 encoding for better display.(Yi Liu via umamahesh) HADOOP-10575. Small fixes for XAttrCommands and test. (Yi Liu via umamahesh) HADOOP-10561. Copy command with preserve option should handle Xattrs. (Yi Liu via cnauroth) Release 2.4.1 - 2014-06-23 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-10466. Lower the log level in UserGroupInformation. (Nicolas Liochon via szetszwo) OPTIMIZATIONS BUG FIXES HADOOP-10455. When there is an exception, ipc.Server should first check whether it is an terse exception. (szetszwo) HADOOP-10456. Bug in Configuration.java exposed by Spark (ConcurrentModificationException). (Nishkam Ravi via cnauroth) HADOOP-10473. TestCallQueueManager should interrupt before counting calls. (szetszwo) HADOOP-10490. TestMapFile and TestBloomMapFile leak file descriptors. (cnauroth) HADOOP-10522. JniBasedUnixGroupMapping mishandles errors. (kihwal) HADOOP-10527. Fix incorrect return code and allow more retries on EINTR. (kihwal) HADOOP-10612. NFS failed to refresh the user group id mapping table (brandonli) HADOOP-10562. Namenode exits on exception without printing stack trace in AbstractDelegationTokenSecretManager. (Suresh Srinivas via Arpit Agarwal) Release 2.4.0 - 2014-04-07 INCOMPATIBLE CHANGES HADOOP-8691. FsShell can print "Found xxx items" unnecessarily often. (Daryn Sharp via wheat9) NEW FEATURES HADOOP-10184. Hadoop Common changes required to support HDFS ACLs. (See breakdown of tasks below for features and contributors) IMPROVEMENTS HADOOP-10139. Update and improve the Single Cluster Setup document. (Akira Ajisaka via Arpit Agarwal) HADOOP-10295. Allow distcp to automatically identify the checksum type of source files and use it for the target. (jing9 and Laurent Goujon) HADOOP-10333. Fix grammatical error in overview.html document. (René Nyffenegger via suresh) HADOOP-10343. Change info to debug log in LossyRetryInvocationHandler. (arpit) HADOOP-10348. Deprecate hadoop.ssl.configuration in branch-2, and remove it in trunk. (Haohui Mai via jing9) HADOOP-9454. Support multipart uploads for s3native. (Jordan Mendelson and Akira AJISAKA via atm) HADOOP-10374. InterfaceAudience annotations should have RetentionPolicy.RUNTIME (Enis Soztutar via Arpit Agarwal) HADOOP-10278. Refactor to make CallQueue pluggable. (Chris Li via Arpit Agarwal) HADOOP-10285. Admin interface to swap callqueue at runtime. (Chris Li via Arpit Agarwal) HADOOP-10314. The ls command help still shows outdated 0.16 format. (Rushabh S Shah via kihwal) HADOOP-10379. Protect authentication cookies with the HttpOnly and Secure flags. (wheat9) HADOOP-10211. Enable RPC protocol to negotiate SASL-QOP values between clients and servers. (Benoy Antony via Arpit Agarwal) HADOOP-10386. Log proxy hostname in various exceptions being thrown in a HA setup. (wheat9) HADOOP-3679. Fixup assert ordering in unit tests to yield meaningful error messages. (Jay Vyas via cdouglas) HADOOP-10221. Add a plugin to specify SaslProperties for RPC protocol based on connection properties. (Benoy Antony and Daryn Sharp via Arpit Agarwal) HADOOP-10015. UserGroupInformation prints out excessive warnings. (Nicolas Liochon via szetszwo) HADOOP-10423. Clarify compatibility policy document for combination of new client and old server. (Chris Nauroth via kasha) HADOOP-10280. Make Schedulables return a configurable identity of user or group. (Chris Li via Arpit Agarwal) OPTIMIZATIONS BUG FIXES HADOOP-10320. Javadoc in InterfaceStability.java lacks final . (René Nyffenegger via cnauroth) HADOOP-10085. CompositeService should allow adding services while being inited. (Steve Loughran via kasha) HADOOP-10327. Trunk windows build broken after HDFS-5746. (Vinay via cnauroth) HADOOP-10330. TestFrameDecoder fails if it cannot bind port 12345. (Arpit Agarwal) HADOOP-10326. M/R jobs can not access S3 if Kerberos is enabled. (bc Wong via atm) HADOOP-10338. Cannot get the FileStatus of the root inode from the new Globber (cmccabe) HADOOP-10249. LdapGroupsMapping should trim ldap password read from file. (Dilli Armugam via suresh) HADOOP-10346. Deadlock while logging tokens (jlowe) HADOOP-10328. loadGenerator exit code is not reliable. (Haohui Mai via cnauroth) HADOOP-10355. Fix TestLoadGenerator#testLoadGenerator. (Haohui Mai via jing9) HADOOP-10070. RPC client doesn't use per-connection conf to determine server's expected Kerberos principal name. (atm) HADOOP-10368. InputStream is not closed in VersionInfo ctor. (Tsuyoshi OZAWA via szetszwo) HADOOP-10353. FsUrlStreamHandlerFactory is not thread safe. (Tudor Scurtu via cnauroth) HADOOP-10393. Fix the javac warnings in hadoop-auth. (szetszwo) HADOOP-10395. TestCallQueueManager is flaky. (Arpit Agarwal) HADOOP-10394. TestAuthenticationFilter is flaky. (Arpit Agarwal) HADOOP-10337 ConcurrentModificationException from MetricsDynamicMBeanBase.createMBeanInfo() (Liang Xie via stack) HADOOP-10407. Fix the javac warnings in org.apache.hadoop.ipc package. (szetszwo) HADOOP-10191. Missing executable permission on viewfs internal dirs. (Gera Shegalov via cnauroth) HADOOP-10422. Remove redundant logging of RPC retry attempts. (cnauroth) HADOOP-10425. LocalFileSystem.getContentSummary should not count crc files. (szetszwo) HADOOP-10440. HarFsInputStream.read(byte[]) updates position incorrectly. (guodongdong via szetszwo) HADOOP-10437. Fix the javac warnings in the conf and the util package. (szetszwo) HADOOP-10441. Namenode metric "rpc.RetryCache/NameNodeRetryCache.CacheHit" can't be correctly processed by Ganglia. (jing9) HADOOP-10449. Fix the javac warnings in the security package. (szetszwo) HADOOP-10450. Build zlib native code bindings in hadoop.dll for Windows. (cnauroth) HADOOP-10301. AuthenticationFilter should return Forbidden for failed authentication. (Daryn Sharp via jing9) HADOOP-9525. Add tests that validate winutils chmod behavior on folders (ivanmi) BREAKDOWN OF HADOOP-10184 SUBTASKS AND RELATED JIRAS HADOOP-10185. FileSystem API for ACLs. (cnauroth) HADOOP-10186. Remove AclReadFlag and AclWriteFlag in FileSystem API. (Haohui Mai via cnauroth) HADOOP-10187. FsShell CLI: add getfacl and setfacl with minimal support for getting and setting ACLs. (Vinay via cnauroth) HADOOP-10192. FileSystem#getAclStatus has incorrect JavaDocs. (cnauroth) HADOOP-10220. Add ACL indicator bit to FsPermission. (cnauroth) HADOOP-10241. Clean up output of FsShell getfacl. (Chris Nauroth via wheat9) HADOOP-10213. Fix bugs parsing ACL spec in FsShell setfacl. (Vinay via cnauroth) HADOOP-10277. setfacl -x fails to parse ACL spec if trying to remove the mask entry. (Vinay via cnauroth) HADOOP-10270. getfacl does not display effective permissions of masked entries. (cnauroth) HADOOP-10344. Fix TestAclCommands after merging HADOOP-10338 patch. (cnauroth) HADOOP-10352. Recursive setfacl erroneously attempts to apply default ACL to files. (cnauroth) HADOOP-10354. TestWebHDFS fails after merge of HDFS-4685 to trunk. (cnauroth) HADOOP-10361. Correct alignment in CLI output for ACLs. (cnauroth) HADOOP-10399. FileContext API for ACLs. (Vinayakumar B via cnauroth) HADOOP-10442. Group look-up can cause segmentation fault when certain JNI-based mapping module is used. (Kihwal Lee via jeagles) Release 2.3.1 - UNRELEASED INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES Release 2.3.0 - 2014-02-18 INCOMPATIBLE CHANGES NEW FEATURES HADOOP-8545. Filesystem Implementation for OpenStack Swift (Dmitry Mezhensky, David Dobbins, Stevel via stevel) IMPROVEMENTS HADOOP-10046. Print a log message when SSL is enabled. (David S. Wang via wang) HADOOP-10079. log a warning message if group resolution takes too long. (cmccabe) HADOOP-9623. Update jets3t dependency to 0.9.0 (Amandeep Khurana via Colin Patrick McCabe) HADOOP-10132. RPC#stopProxy() should log the class of proxy when IllegalArgumentException is encountered (Ted yu via umamahesh) HADOOP-10248. Property name should be included in the exception where property value is null (Akira AJISAKA via umamahesh) HADOOP-10086. User document for authentication in secure cluster. (Masatake Iwasaki via Arpit Agarwal) HADOOP-10274 Lower the logging level from ERROR to WARN for UGI.doAs method (Takeshi Miao via stack) HADOOP-9784. Add a builder for HttpServer. (Junping Du via llu) HADOOP 9871. Fix intermittent findbugs warnings in DefaultMetricsSystem. (Junping Du via llu) HADOOP-9319. Update bundled LZ4 source to r99. (Binglin Chang via llu) HADOOP-9432 Add support for markdown .md files in site documentation (stevel) HADOOP-9241. DU refresh interval is not configurable (harsh) HADOOP-9417. Support for symlink resolution in LocalFileSystem / RawLocalFileSystem. (Andrew Wang via Colin Patrick McCabe) HADOOP-9703. org.apache.hadoop.ipc.Client leaks threads on stop. (Tsuyoshi OZAWA vi Colin Patrick McCabe) HADOOP-9618. Add thread which detects GC pauses. (Todd Lipcon via Colin Patrick McCabe) HADOOP-9848. Create a MiniKDC for use with security testing. (ywskycn via tucu) HADOOP-9860. Remove class HackedKeytab and HackedKeytabEncoder from hadoop-minikdc once jira DIRSERVER-1882 solved. (ywskycn via tucu) HADOOP-9866. convert hadoop-auth testcases requiring kerberos to use minikdc. (ywskycn via tucu) HADOOP-9487 Deprecation warnings in Configuration should go to their own log or otherwise be suppressible (Chu Tong via stevel) HADOOP-9889. Refresh the Krb5 configuration when creating a new kdc in Hadoop-MiniKDC (Wei Yan via Sandy Ryza) HADOOP-9915. o.a.h.fs.Stat support on Mac OS X (Binglin Chang via Colin Patrick McCabe) HADOOP-9998. Provide methods to clear only part of the DNSToSwitchMapping. (Junping Du via Colin Patrick McCabe) HADOOP-9063. enhance unit-test coverage of class org.apache.hadoop.fs.FileUtil (Ivan A. Veselovsky via jlowe) HADOOP-9254. Cover packages org.apache.hadoop.util.bloom, org.apache.hadoop.util.hash (Vadim Bondarev via jlowe) HADOOP-9225. Cover package org.apache.hadoop.compress.Snappy (Vadim Bondarev, Andrey Klochkov and Nathan Roberts via jlowe) HADOOP-9199. Cover package org.apache.hadoop.io with unit tests (Andrey Klochkov via jeagles) HADOOP-9470. eliminate duplicate FQN tests in different Hadoop modules (Ivan A. Veselovsky via daryn) HADOOP-9494. Excluded auto-generated and examples code from clover reports (Andrey Klochkov via jeagles) HADOOP-9897. Add method to get path start position without drive specifier in o.a.h.fs.Path. (Binglin Chang via cnauroth) HADOOP-9078. enhance unit-test coverage of class org.apache.hadoop.fs.FileContext (Ivan A. Veselovsky via jeagles) HDFS-5276. FileSystem.Statistics should use thread-local counters to avoid multi-threaded performance issues on read/write. (Colin Patrick McCabe) HADOOP-9291. enhance unit-test coverage of package o.a.h.metrics2 (Ivan A. Veselovsky via jeagles) HADOOP-10064. Upgrade to maven antrun plugin version 1.7 (Arpit Agarwal via jeagles) HADOOP-9594. Update apache commons math dependency (Timothy St. Clair via stevel) HADOOP-10095. In CodecPool, synchronize pool and codecList separately in order to reduce lock contention. (Nicolas Liochon via szetszwo) HADOOP-10067. Missing POM dependency on jsr305 (Robert Rati via stevel) HADOOP-10103. update commons-lang to 2.6 (Akira AJISAKA via stevel) HADOOP-10111. Allow DU to be initialized with an initial value (Kihwal Lee via jeagles) HADOOP-10126. LightWeightGSet log message is confusing. (Vinay via suresh) HADOOP-10127. Add ipc.client.connect.retry.interval to control the frequency of connection retries (Karthik Kambatla via Sandy Ryza) HADOOP-10102. Update commons IO from 2.1 to 2.4 (Akira Ajisaka via stevel) HADOOP-10168. fix javadoc of ReflectionUtils#copy. (Thejas Nair via suresh) HADOOP-10164. Allow UGI to login with a known Subject (bobby) HADOOP-10169. Remove the unnecessary synchronized in JvmMetrics class. (Liang Xie via jing9) HADOOP-10198. DomainSocket: add support for socketpair. (Colin Patrick McCabe via wang) HADOOP-10208. Remove duplicate initialization in StringUtils.getStringCollection. (Benoy Antony via jing9) HADOOP-9420. Add percentile or max metric for rpcQueueTime, processing time. (Liang Xie via wang) HADOOP-9652. Allow RawLocalFs#getFileLinkStatus to fill in the link owner and mode if requested. (Andrew Wang via Colin Patrick McCabe) HADOOP-10305. Add "rpc.metrics.quantile.enable" and "rpc.metrics.percentiles.intervals" to core-default.xml. (Akira Ajisaka via wang) HADOOP-10317. Rename branch-2.3 release version from 2.4.0-SNAPSHOT to 2.3.0-SNAPSHOT. (wang) HADOOP-10313. Script and jenkins job to produce Hadoop release artifacts. (tucu) OPTIMIZATIONS HADOOP-10142. Avoid groups lookup for unprivileged users such as "dr.who" (vinay via cmccabe) HADOOP-9748. Reduce blocking on UGI.ensureInitialized (daryn) HADOOP-10047. Add a direct-buffer based apis for compression. (Gopal V via acmurthy) HADOOP-10172. Cache SASL server factories (daryn) HADOOP-10173. Remove UGI from DIGEST-MD5 SASL server creation (daryn via kihwal) HADOOP-10228. FsPermission#fromShort() should cache FsAction.values(). (Haohui Mai via cnauroth) HADOOP-10143 replace WritableFactories's hashmap with ConcurrentHashMap (Liang Xie via stack) BUG FIXES HADOOP-10028. Malformed ssl-server.xml.example. (Haohui Mai via jing9) HADOOP-10030. FsShell -put/copyFromLocal should support Windows local path. (Chuan Liu via cnauroth) HADOOP-10031. FsShell -get/copyToLocal/moveFromLocal should support Windows local path. (Chuan Liu via cnauroth) HADOOP-10039. Add Hive to the list of projects using AbstractDelegationTokenSecretManager. (Haohui Mai via jing9) HADOOP-10040. hadoop.cmd in UNIX format and would not run by default on Windows. (cnauroth) HADOOP-10055. FileSystemShell.apt.vm doc has typo "numRepicas". (Akira Ajisaka via cnauroth) HADOOP-10072. TestNfsExports#testMultiMatchers fails due to non-deterministic timing around cache expiry check. (cnauroth) HADOOP-9898. Set SO_KEEPALIVE on all our sockets. (todd via wang) HADOOP-9478. Fix race conditions during the initialization of Configuration related to deprecatedKeyMap (cmccabe) HADOOP-9660. [WINDOWS] Powershell / cmd parses -Dkey=value from command line as [-Dkey, value] which breaks GenericsOptionParser. (Enis Soztutar via cnauroth) HADOOP-10078. KerberosAuthenticator always does SPNEGO. (rkanter via tucu) HADOOP-10110. hadoop-auth has a build break due to missing dependency. (Chuan Liu via arp) HADOOP-9114. After defined the dfs.checksum.type as the NULL, write file and hflush will through java.lang.ArrayIndexOutOfBoundsException (Sathish via umamahesh) HADOOP-10130. RawLocalFS::LocalFSFileInputStream.pread does not track FS::Statistics (Binglin Chang via Colin Patrick McCabe) HDFS-5560. Trash configuration log statements prints incorrect units. (Josh Elser via Andrew Wang) HADOOP-10081. Client.setupIOStreams can leak socket resources on exception or error (Tsuyoshi OZAWA via jlowe) HADOOP-10087. UserGroupInformation.getGroupNames() fails to return primary group first when JniBasedUnixGroupsMappingWithFallback is used (cmccabe) HADOOP-10175. Har files system authority should preserve userinfo. (Chuan Liu via cnauroth) HADOOP-10090. Jobtracker metrics not updated properly after execution of a mapreduce job. (ivanmi) HADOOP-10193. hadoop-auth's PseudoAuthenticationHandler can consume getInputStream. (gchanan via tucu) HADOOP-10178. Configuration deprecation always emit "deprecated" warnings when a new key is used. (Shanyu Zhao via cnauroth) HADOOP-10234. "hadoop.cmd jar" does not propagate exit code. (cnauroth) HADOOP-10240. Windows build instructions incorrectly state requirement of protoc 2.4.1 instead of 2.5.0. (cnauroth) HADOOP-10110. hadoop-auth has a build break due to missing dependency (Chuan Liu via cos) HADOOP-10167. Mark hadoop-common source as UTF-8 in Maven pom files / refactoring (Mikhail Antonov via cos) HADOOP-9982. Fix dead links in hadoop site docs. (Akira Ajisaka via Arpit Agarwal) HADOOP-10212. Incorrect compile command in Native Library document. (Akira Ajisaka via Arpit Agarwal) HADOOP-9830. Fix typo at http://hadoop.apache.org/docs/current/ (Kousuke Saruta via Arpit Agarwal) HADOOP-10255. Rename HttpServer to HttpServer2 to retain older HttpServer in branch-2 for compatibility. (Haohui Mai via suresh) HADOOP-10292. Restore HttpServer from branch-2.2 in branch-2. (Haohui Mai via suresh) HADOOP-10291. TestSecurityUtil#testSocketAddrWithIP fails due to test order dependency. (Mit Desai via Arpit Agarwal) HADOOP-9964. Fix deadlocks in TestHttpServer by synchronize ReflectionUtils.printThreadInfo. (Junping Du via llu) HADOOP-9582. Non-existent file to "hadoop fs -conf" doesn't throw error (Ashwin Shankar via jlowe) HADOOP-9817. FileSystem#globStatus and FileContext#globStatus need to work with symlinks. (Colin Patrick McCabe via Andrew Wang) HADOOP-9875. TestDoAsEffectiveUser can fail on JDK 7. (Aaron T. Myers via Colin Patrick McCabe) HADOOP-9865. FileContext#globStatus has a regression with respect to relative path. (Chuan Lin via Colin Patrick McCabe) HADOOP-9909. org.apache.hadoop.fs.Stat should permit other LANG. (Shinichi Yamashita via Andrew Wang) HADOOP-9908. Fix NPE when versioninfo properties file is missing (todd) HADOOP-9929. Insufficient permissions for a path reported as File Not Found. (Contributed by Colin Patrick McCabe) HADOOP-9791. Add a test case covering long paths for new FileUtil access check methods (ivanmi) HADOOP-9981. globStatus should minimize its listStatus and getFileStatus calls. (Contributed by Colin Patrick McCabe) HADOOP-10006. Compilation failure in trunk for o.a.h.fs.swift.util.JSONUtil (Junping Du via stevel) HADOOP-9016. HarFsInputStream.skip(long) must never return negative value. (Ivan A. Veselovsky via jeagles) HADOOP-10088. copy-nativedistlibs.sh needs to quote snappy lib dir. (Raja Aluri via cnauroth) HADOOP-10093. hadoop-env.cmd sets HADOOP_CLIENT_OPTS with a max heap size that is too small. (Shanyu Zhao via cnauroth) HADOOP-10094. NPE in GenericOptionsParser#preProcessForWindows(). (Enis Soztutar via cnauroth) HADOOP-10100. MiniKDC shouldn't use apacheds-all artifact. (rkanter via tucu) HADOOP-10107. Server.getNumOpenConnections may throw NPE. (Kihwal Lee via jing9) HADOOP-10135 writes to swift fs over partition size leave temp files and empty output file (David Dobbins via stevel) HADOOP-10129. Distcp may succeed when it fails (daryn) HADOOP-10058. TestMetricsSystemImpl#testInitFirstVerifyStopInvokedImmediately fails on trunk (Chen He via jeagles) HADOOP-10162. Fix symlink-related test failures in TestFileContextResolveAfs and TestStat in branch-2 (Mit Desai via Colin Patrick McCabe) HADOOP-8753. LocalDirAllocator throws "ArithmeticException: / by zero" when there is no available space on configured local dir. (Benoy Antony via hitesh) HADOOP-10106. Incorrect thread name in RPC log messages. (Ming Ma via jing9) HADOOP-9611 mvn-rpmbuild against google-guice > 3.0 yields missing cglib dependency (Timothy St. Clair via stevel) HADOOP-10171. TestRPC fails intermittently on jkd7 (Mit Desai via jeagles) HADOOP-10147 HDFS-5678 Upgrade to commons-logging 1.1.3 to avoid potential deadlock in MiniDFSCluster (stevel) HADOOP-10207. TestUserGroupInformation#testLogin is flaky (jxiang via cmccabe) HADOOP-10214. Fix multithreaded correctness warnings in ActiveStandbyElector (Liang Xie via kasha) HADOOP-10223. MiniKdc#main() should close the FileReader it creates. (Ted Yu via tucu) HADOOP-10236. Fix typo in o.a.h.ipc.Client#checkResponse. (Akira Ajisaka via suresh) HADOOP-10146. Workaround JDK7 Process fd close bug (daryn) HADOOP-10125. no need to process RPC request if the client connection has been dropped (Ming Ma via brandonli) HADOOP-10235. Hadoop tarball has 2 versions of stax-api JARs. (tucu) HADOOP-10252. HttpServer can't start if hostname is not specified. (Jimmy Xiang via atm) HADOOP-10203. Connection leak in Jets3tNativeFileSystemStore#retrieveMetadata. (Andrei Savu via atm) HADOOP-10250. VersionUtil returns wrong value when comparing two versions. (Yongjun Zhang via atm) HADOOP-10288. Explicit reference to Log4JLogger breaks non-log4j users (todd) HADOOP-10310. SaslRpcServer should be initialized even when no secret manager present. (atm) HADOOP-10311. Cleanup vendor names from the code base. (tucu) HADOOP-10273. Fix 'mvn site'. (Arpit Agarwal) Release 2.2.0 - 2013-10-13 INCOMPATIBLE CHANGES HADOOP-10020. Disable symlinks temporarily (cmccabe) NEW FEATURES IMPROVEMENTS HADOOP-9948. Add a config value to CLITestHelper to skip tests on Windows. (Chuan Liu via cnauroth) HADOOP-9976. Different versions of avro and avro-maven-plugin (Karthik Kambatla via Sandy Ryza) HADOOP-9758. Provide configuration option for FileSystem/FileContext symlink resolution. (Andrew Wang via Colin Patrick McCabe) HADOOP-8315. Support SASL-authenticated ZooKeeper in ActiveStandbyElector (todd) OPTIMIZATIONS BUG FIXES HADOOP-9776. HarFileSystem.listStatus() returns invalid authority if port number is empty. (Shanyu Zhao via ivanmi) HADOOP-9761. ViewFileSystem#rename fails when using DistributedFileSystem. (Andrew Wang via Colin Patrick McCabe) HADOOP-10003. HarFileSystem.listLocatedStatus() fails. (Jason Dere and suresh via suresh) HADOOP-10017. Fix NPE in DFSClient#getDelegationToken when doing Distcp from a secured cluster to an insecured cluster. (Haohui Mai via jing9) Release 2.1.1-beta - 2013-09-23 INCOMPATIBLE CHANGES HADOOP-9944. Fix RpcRequestHeaderProto.callId to be sint32 rather than uint32 since ipc.Client.CONNECTION_CONTEXT_CALL_ID is signed (i.e. -3) (acmurthy) NEW FEATURES IMPROVEMENTS HADOOP-9910. proxy server start and stop documentation wrong (Andre Kelpe via harsh) HADOOP-9446. Support Kerberos SPNEGO for IBM JDK. (Yu Gao via llu) HADOOP-9787. ShutdownHelper util to shutdown threads and threadpools. (Karthik Kambatla via Sandy Ryza) HADOOP-9803. Add a generic type parameter to RetryInvocationHandler. (szetszwo) HADOOP-9821. ClientId should have getMsb/getLsb methods. (Tsuyoshi OZAWA via jing9) HADOOP-9435. Support building the JNI code against the IBM JVM. (Tian Hong Wang via Colin Patrick McCabe) HADOOP-9833 move slf4j to version 1.7.5 (Kousuke Saruta via stevel) HADOOP-9672. Upgrade Avro dependency to 1.7.4. (sandy via kihwal) HADOOP-9789. Support server advertised kerberos principals (daryn) HADOOP-8814. Replace string equals "" by String#isEmpty(). (Brandon Li via suresh) HADOOP-9802. Support Snappy codec on Windows. (cnauroth) HADOOP-9879. Move the version info of zookeeper dependencies to hadoop-project/pom (Karthik Kambatla via Sandy Ryza) HADOOP-9886. Turn warning message in RetryInvocationHandler to debug (arpit) HADOOP-9906. Move HAZKUtil to o.a.h.util.ZKUtil and make inner-classes public (Karthik Kambatla via Sandy Ryza) HADOOP-9918. Add addIfService to CompositeService (Karthik Kambatla via Sandy Ryza) HADOOP-9945. HAServiceState should have a state for stopped services. (Karthik Kambatla via atm) HADOOP-9962. in order to avoid dependency divergence within Hadoop itself lets enable DependencyConvergence. (rvs via tucu) HADOOP-9669. Reduce the number of byte array creations and copies in XDR data manipulation. (Haohui Mai via brandonli) OPTIMIZATIONS BUG FIXES HADOOP-9916. Fix race in ipc.Client retry. (Binglin Chang via llu) HADOOP-9768. chown and chgrp reject users and groups with spaces on platforms where spaces are otherwise acceptable. (cnauroth) HADOOP-9801. Configuration#writeXml uses platform defaulting encoding, which may mishandle multi-byte characters. (cnauroth) HADOOP-9806 PortmapInterface should check if the procedure is out-of-range (brandonli) HADOOP-9527. Add symlink support to LocalFileSystem on Windows. (Arpit Agarwal via cnauroth) HADOOP-9315. Port HADOOP-9249 hadoop-maven-plugins Clover fix to branch-2 to fix build failures. (Dennis Y via cnauroth) HADOOP-9831. Make checknative shell command accessible on Windows. (cnauroth) HADOOP-9675. use svn:eol-style native for html to prevent line ending issues (Colin Patrick McCabe) HADOOP-9757. Har metadata cache can grow without limit (Cristina Abad via daryn) HADOOP-9858. Remove unused private RawLocalFileSystem#execCommand method from branch-2. (cnauroth) HADOOP-9857. Tests block and sometimes timeout on Windows due to invalid entropy source. (cnauroth) HADOOP-9381. Document dfs cp -f option. (Keegan Witt, suresh via suresh) HADOOP-9868. Server must not advertise kerberos realm. (daryn via kihwal) HADOOP-9880. SASL changes from HADOOP-9421 breaks Secure HA NN. (daryn via jing9) HADOOP-9887. globStatus does not correctly handle paths starting with a drive spec on Windows. (Chuan Liu via cnauroth) HADOOP-9899. Remove the debug message, added by HADOOP-8855, from KerberosAuthenticator. (szetszwo) HADOOP-9894. Race condition in Shell leads to logged error stream handling exceptions (Arpit Agarwal) HADOOP-9774. RawLocalFileSystem.listStatus() return absolute paths when input path is relative on Windows. (Shanyu Zhao via ivanmi) HADOOP-9924. FileUtil.createJarWithClassPath() does not generate relative classpath correctly. (Shanyu Zhao via ivanmi) HADOOP-9932. Improper synchronization in RetryCache. (kihwal) HADOOP-9958. Add old constructor back to DelegationTokenInformation to unbreak downstream builds. (Andrew Wang) HADOOP-9960. Upgrade Jersey version to 1.9. (Karthik Kambatla via atm) HADOOP-9557. hadoop-client excludes commons-httpclient. (Lohit Vijayarenu via cnauroth) HADOOP-9350. Hadoop not building against Java7 on OSX (Robert Kanter via stevel) HADOOP-9961. versions of a few transitive dependencies diverged between hadoop subprojects. (rvs via tucu) HADOOP-9977. Hadoop services won't start with different keypass and keystorepass when https is enabled. (cnauroth) HADOOP-10005. No need to check INFO severity level is enabled or not. (Jackie Chang via suresh) Release 2.1.0-beta - 2013-08-22 INCOMPATIBLE CHANGES HADOOP-8886. Remove KFS support. (eli) HADOOP-9163. [RPC v9] The rpc msg in ProtobufRpcEngine.proto should be moved out to avoid an extra copy (Sanjay Radia) HADOOP-9151. [RPC v9] Include RPC error info in RpcResponseHeader instead of sending it separately (sanjay Radia) HADOOP-9380. [RPC v9] Add totalLength to rpc response (sanjay Radia) HADOOP-9425. [RPC v9] Add error codes to rpc-response (sanjay Radia) HADOOP-9194. [RPC v9] RPC support for QoS. (Junping Du via llu) HADOOP-9630. [RPC v9] Remove IpcSerializationType. (Junping Du via llu) HADOOP-9421. [RPC v9] Convert SASL to use ProtoBuf and provide negotiation capabilities (daryn) HADOOP-9688. Add globally unique Client ID to RPC requests. (suresh) HADOOP-9683. [RPC v9] Wrap IpcConnectionContext in RPC headers (daryn) HADOOP-9698. [RPC v9] Client must honor server's SASL negotiate response (daryn) HADOOP-9832. [RPC v9] Add RPC header to client ping (daryn) HADOOP-9820. [RPC v9] Wire protocol is insufficient to support multiplexing. (daryn via jitendra) NEW FEATURES HADOOP-9283. Add support for running the Hadoop client on AIX. (atm) HADOOP-8415. Add getDouble() and setDouble() in org.apache.hadoop.conf.Configuration (Jan van der Lugt via harsh) HADOOP-9338. FsShell Copy Commands Should Optionally Preserve File Attributes. (Nick White via atm) HADOOP-8562. Enhancements to support Hadoop on Windows Server and Windows Azure environments. (See breakdown of tasks below for subtasks and contributors) HADOOP-8469. Make NetworkTopology class pluggable. (Junping Du via szetszwo) HADOOP-8470. Add NetworkTopologyWithNodeGroup, a 4-layer implementation of NetworkTopology. (Junping Du via szetszwo) HADOOP-9763. Extends LightWeightGSet to support eviction of expired elements. (Tsz Wo (Nicholas) SZE via jing9) HADOOP-9762. RetryCache utility for implementing RPC retries. (Suresh Srinivas via jing9) HADOOP-9792. Retry the methods that are tagged @AtMostOnce along with @Idempotent. (suresh) HADOOP-9509. Implement ONCRPC and XDR. (brandonli) HADOOP-9515. Add general interface for NFS and Mount. (brandonli) IMPROVEMENTS HADOOP-9164. Print paths of loaded native libraries in NativeLibraryChecker. (Binglin Chang via llu) HADOOP-9253. Capture ulimit info in the logs at service start time. (Arpit Gupta via suresh) HADOOP-8924. Add maven plugin alternative to shell script to save package-info.java. (Chris Nauroth via suresh) HADOOP-9117. replace protoc ant plugin exec with a maven plugin. (tucu) HADOOP-9279. Document the need to build hadoop-maven-plugins for eclipse and separate project builds. (Tsuyoshi Ozawa via suresh) HADOOP-9334. Upgrade netty version. (Nicolas Liochon via suresh) HADOOP-9343. Allow additional exceptions through the RPC layer. (sseth) HADOOP-9318. When exiting on a signal, print the signal name first. (Colin Patrick McCabe via atm) HADOOP-9358. "Auth failed" log should include exception string (todd) HADOOP-9401. CodecPool: Add counters for number of (de)compressors leased out. (kkambatl via tucu) HADOOP-9450. HADOOP_USER_CLASSPATH_FIRST is not honored; CLASSPATH is PREpended instead of APpended. (Chris Nauroth and harsh via harsh) HADOOP-9496. Bad merge of HADOOP-9450 on branch-2 breaks all bin/hadoop calls that need HADOOP_CLASSPATH. (harsh) HADOOP-9503. Remove sleep between IPC client connect timeouts. (Varun Sharma via szetszwo) HADOOP-9322. LdapGroupsMapping doesn't seem to set a timeout for its directory search. (harsh) HADOOP-9523. Provide a generic IBM java vendor flag in PlatformName.java to support non-Sun JREs. (Tian Hong Wang via suresh) HADOOP-9511. Adding support for additional input streams (FSDataInputStream and RandomAccessFile) in SecureIOUtils so as to help YARN-578. (Omkar Vinit Joshi via vinodkv) HADOOP-9560. metrics2#JvmMetrics should have max memory size of JVM. (Tsuyoshi Ozawa via suresh) HADOOP-9140 Cleanup rpc PB protos (sanjay Radia) HADOOP-9218 Document the Rpc-wrappers used internally (sanjay Radia) HADOOP-9574. Added new methods in AbstractDelegationTokenSecretManager for helping YARN ResourceManager to reuse code for RM restart. (Jian He via vinodkv) HADOOP-7391 Document Interface Classification from HADOOP-5073 (sanjay Radia) HADOOP-9287. Parallel-testing hadoop-common (Andrey Klochkov via jlowe) HADOOP-9604. Javadoc of FSDataOutputStream is slightly inaccurate. (Jingguo Yao via atm) HADOOP-9625. HADOOP_OPTS not picked up by hadoop command. (Paul Han via arpit) HADOOP-9649. Promoted YARN service life-cycle libraries into Hadoop Common for usage across all Hadoop projects. (Zhijie Shen via vinodkv) HADOOP-9517. Documented various aspects of compatibility for Apache Hadoop. (Karthik Kambatla via acmurthy) HADOOP-8608. Add Configuration API for parsing time durations. (cdouglas) HADOOP-9619 Mark stability of .proto files (sanjay Radia) HADOOP-9676. Make maximum RPC buffer size configurable (Colin Patrick McCabe) HADOOP-9691. RPC clients can generate call ID using AtomicInteger instead of synchronizing on the Client instance. (cnauroth) HADOOP-9661. Allow metrics sources to be extended. (sandyr via tucu) HADOOP-9370. Write FSWrapper class to wrap FileSystem and FileContext for better test coverage. (Andrew Wang via Colin Patrick McCabe) HADOOP-9355. Abstract symlink tests to use either FileContext or FileSystem. (Andrew Wang via Colin Patrick McCabe) HADOOP-9673. NetworkTopology: when a node can't be added, print out its location for diagnostic purposes. (Colin Patrick McCabe) HADOOP-9414. Refactor out FSLinkResolver and relevant helper methods. (Andrew Wang via Colin Patrick McCabe) HADOOP-9416. Add new symlink resolution methods in FileSystem and FileSystemLinkResolver. (Andrew Wang via Colin Patrick McCabe) HADOOP-9720. Rename Client#uuid to Client#clientId. (Arpit Agarwal via suresh) HADOOP-9734. Common protobuf definitions for GetUserMappingsProtocol, RefreshAuthorizationPolicyProtocol and RefreshUserMappingsProtocol (jlowe) HADOOP-9716. Rpc retries should use the same call ID as the original call. (szetszwo) HADOOP-9717. Add retry attempt count to the RPC requests. (jing9) HADOOP-9751. Add clientId and retryCount to RpcResponseHeaderProto. (szetszwo) HADOOP-9754. Remove unnecessary "throws IOException/InterruptedException", and fix generic and other javac warnings. (szetszwo) HADOOP-9760. Move GSet and related classes to common from HDFS. (suresh) HADOOP-9756. Remove the deprecated getServer(..) methods from RPC. (Junping Du via szetszwo) HADOOP-9770. Make RetryCache#state non volatile. (suresh) HADOOP-9786. RetryInvocationHandler#isRpcInvocation should support ProtocolTranslator. (suresh and jing9) HADOOP-9847. TestGlobPath symlink tests fail to cleanup properly. (cmccabe via wang) OPTIMIZATIONS HADOOP-9150. Avoid unnecessary DNS resolution attempts for logical URIs (todd) HADOOP-9845. Update protobuf to 2.5 from 2.4.x. (tucu) HADOOP-9872. Improve protoc version handling and detection. (tucu) BUG FIXES HADOOP-9451. Fault single-layer config if node group topology is enabled. (Junping Du via llu) HADOOP-9294. GetGroupsTestBase fails on Windows. (Chris Nauroth via suresh) HADOOP-9305. Add support for running the Hadoop client on 64-bit AIX. (atm) HADOOP-9245. mvn clean without running mvn install before fails. (Karthik Kambatla via suresh) HADOOP-9246 Execution phase for hadoop-maven-plugin should be process-resources (Karthik Kambatla and Chris Nauroth via jlowe) HADOOP-9297. remove old record IO generation and tests. (tucu) HADOOP-9154. SortedMapWritable#putAll() doesn't add key/value classes to the map. (Karthik Kambatla via tomwhite) HADOOP-9304. remove addition of avro genreated-sources dirs to build. (tucu) HADOOP-9267. hadoop -help, -h, --help should show usage instructions. (Andrew Wang via atm) HADOOP-8569. CMakeLists.txt: define _GNU_SOURCE and _LARGEFILE_SOURCE. (Colin Patrick McCabe via atm) HADOOP-9323. Fix typos in API documentation. (suresh) HADOOP-7487. DF should throw a more reasonable exception when mount cannot be determined. (Andrew Wang via atm) HADOOP-8917. add LOCALE.US to toLowerCase in SecurityUtil.replacePattern. (Arpit Gupta via suresh) HADOOP-9342. Remove jline from distribution. (thw via tucu) HADOOP-9230. TestUniformSizeInputFormat fails intermittently. (kkambatl via tucu) HADOOP-9349. Confusing output when running hadoop version from one hadoop installation when HADOOP_HOME points to another. (sandyr via tucu) HADOOP-9337. org.apache.hadoop.fs.DF.getMount() does not work on Mac OS. (Ivan A. Veselovsky via atm) HADOOP-9369. DNS#reverseDns() can return hostname with . appended at the end. (Karthik Kambatla via atm) HADOOP-9379. capture the ulimit info after printing the log to the console. (Arpit Gupta via suresh) HADOOP-9399. protoc maven plugin doesn't work on mvn 3.0.2 (todd) HADOOP-9407. commons-daemon 1.0.3 dependency has bad group id causing build issues. (Sangjin Lee via suresh) HADOOP-9405. TestGridmixSummary#testExecutionSummarizer is broken. (Andrew Wang via atm) HADOOP-9430. TestSSLFactory fails on IBM JVM. (Amir Sanjar via suresh) HADOOP-9125. LdapGroupsMapping threw CommunicationException after some idle time. (Kai Zheng via atm) HADOOP-9429. TestConfiguration fails with IBM JAVA. (Amir Sanjar via suresh) HADOOP-9222. Cover package with org.apache.hadoop.io.lz4 unit tests (Vadim Bondarev via jlowe) HADOOP-9233. Cover package org.apache.hadoop.io.compress.zlib with unit tests (Vadim Bondarev via jlowe) HADOOP-9211. Set default max heap size in HADOOP_CLIENT_OPTS to 512m in order to avoid OOME. (Plamen Jeliazkov via shv) HADOOP-9473. Typo in FileUtil copy() method. (Glen Mazza via suresh) HADOOP-9504. MetricsDynamicMBeanBase has concurrency issues in createMBeanInfo (Liang Xie via jlowe) HADOOP-9455. HADOOP_CLIENT_OPTS appended twice causes JVM failures. (Chris Nauroth via suresh) HADOOP-9550. Remove aspectj dependency. (kkambatl via tucu) HADOOP-9549. WebHdfsFileSystem hangs on close(). (daryn via kihwal) HADOOP-9485. No default value in the code for hadoop.rpc.socket.factory.class.default. (Colin Patrick McCabe via atm) HADOOP-9459. ActiveStandbyElector can join election even before Service HEALTHY, and results in null data at ActiveBreadCrumb. (Vinay and todd via todd) HADOOP-9307. BufferedFSInputStream.read returns wrong results after certain seeks. (todd) HADOOP-9220. Unnecessary transition to standby in ActiveStandbyElector. (tom and todd via todd) HADOOP-9563. Fix incompatibility introduced by HADOOP-9523. (Tian Hong Wang via suresh) HADOOP-9566. Performing direct read using libhdfs sometimes raises SIGPIPE (which in turn throws SIGABRT) causing client crashes. (Colin Patrick McCabe via atm) HADOOP-9481. Broken conditional logic with HADOOP_SNAPPY_LIBRARY. (Vadim Bondarev via atm) HADOOP-9593. stack trace printed at ERROR for all yarn clients without hadoop.home set (stevel) HADOOP-8957. AbstractFileSystem#IsValidName should be overridden for embedded file systems like ViewFs (Chris Nauroth via Sanjay Radia) HADOOP-9607. Fixes in Javadoc build (Timothy St. Clair via cos) HADOOP-9605. Update junit dependency. (Timothy St. Clair via cos) HADOOP-9581. hadoop --config non-existent directory should result in error (Ashwin Shankar via jlowe) HADOOP-9638. Parallel test changes caused invalid test path for several HDFS tests on Windows (Andrey Klochkov via cnauroth) HADOOP-9632. TestShellCommandFencer will fail if there is a 'host' machine in the network. (Chuan Liu via cnauroth) HADOOP-9624. TestFSMainOperationsLocalFileSystem failed when the Hadoop test root path has "X" in its name. (Xi Fang via cnauroth) HADOOP-9439. JniBasedUnixGroupsMapping: fix some crash bugs (Colin Patrick McCabe) HADOOP-9656. Gridmix unit tests fail on Windows and Linux. (Chuan Liu via cnauroth) HADOOP-9707. Fix register lists for crc32c inline assembly. (todd via kihwal) HADOOP-9738. TestDistCh fails. (jing9 via kihwal) HADOOP-9759. Add support for NativeCodeLoader#getLibraryName on Windows. (Chuan Liu via cnauroth) HADOOP-9773. TestLightWeightCache should not set size limit to zero when testing it. (szetszwo) HADOOP-9507. LocalFileSystem rename() is broken in some cases when destination exists. (cnauroth) HADOOP-9816. RPC Sasl QOP is broken (daryn) HADOOP-9850. RPC kerberos errors don't trigger relogin. (daryn via kihwal) BREAKDOWN OF HADOOP-8562 SUBTASKS AND RELATED JIRAS HADOOP-8924. Hadoop Common creating package-info.java must not depend on sh. (Chris Nauroth via suresh) HADOOP-8945. Merge winutils from branch-1-win to branch-trunk-win. (Bikas Saha, Chuan Liu, Giridharan Kesavan, Ivan Mitic, and Steve Maine ported by Chris Nauroth via suresh) HADOOP-8946. winutils: compile codebase during Maven build on branch-trunk-win. (Chris Nauroth via suresh) HADOOP-8947. Merge FileUtil and Shell changes from branch-1-win to branch-trunk-win to enable initial test pass. (Raja Aluri, Davio Lao, Sumadhur Reddy Bolli, Ahmed El Baz, Kanna Karanam, Chuan Liu, Ivan Mitic, Chris Nauroth, and Bikas Saha via suresh) HADOOP-8954. "stat" executable not found on Windows. (Bikas Saha, Ivan Mitic ported by Chris Narouth via suresh) HADOOP-8959. TestUserGroupInformation fails on Windows due to "id" executable not found. (Bikas Saha, Ivan Mitic, ported by Chris Narouth via suresh) HADOOP-8955. "chmod" executable not found on Windows. (Chris Nauroth via suresh) HADOOP-8960. TestMetricsServlet fails on Windows. (Ivan Mitic via suresh) HADOOP-8961. GenericOptionsParser URI parsing failure on Windows. (Ivan Mitic via suresh) HADOOP-8949. Remove FileUtil.CygPathCommand dead code. (Chris Nauroth via suresh) HADOOP-8956. FileSystem.primitiveMkdir failures on Windows cause multiple test suites to fail. (Chris Nauroth via suresh) HADOOP-8978. TestTrash fails on Windows. (Chris Nauroth via suresh) HADOOP-8979. TestHttpServer fails on Windows. (Chris Nauroth via suresh) HADOOP-8953. Shell PathData parsing failures on Windows. (Arpit Agarwal via suresh) HADOOP-8975. TestFileContextResolveAfs fails on Windows. (Chris Nauroth via suresh) HADOOP-8977. Multiple FsShell test failures on Windows. (Chris Nauroth via suresh) HADOOP-9005. Merge hadoop cmd line scripts from branch-1-win. (David Lao, Bikas Saha, Lauren Yang, Chuan Liu, Thejas M Nair and Ivan Mitic via suresh) HADOOP-9008. Building hadoop tarball fails on Windows. (Chris Nauroth via suresh) HADOOP-9011. saveVersion.py does not include branch in version annotation. (Chris Nauroth via suresh) HADOOP-9110. winutils ls off-by-one error indexing MONTHS array can cause access violation. (Chris Nauroth via suresh) HADOOP-9056. Build native library on Windows. (Chuan Liu, Arpit Agarwal via suresh) HADOOP-9144. Fix findbugs warnings. (Chris Nauroth via suresh) HADOOP-9081. Add TestWinUtils. (Chuan Liu, Ivan Mitic, Chris Nauroth, and Bikas Saha via suresh) HADOOP-9146. Fix sticky bit regression on branch-trunk-win. (Chris Nauroth via suresh) HADOOP-9266. Fix javac, findbugs, and release audit warnings on branch-trunk-win. (Chris Nauroth via suresh) HADOOP-9270. Remove a stale java comment from FileUtil. (Chris Nauroth via szetszwo) HADOOP-9271. Revert Python build scripts from branch-trunk-win. (Chris Nauroth via suresh) HADOOP-9313. Remove spurious mkdir from hadoop-config.cmd. (Ivan Mitic via suresh) HADOOP-9309. Test failures on Windows due to UnsatisfiedLinkError in NativeCodeLoader#buildSupportsSnappy. (Arpit Agarwal via suresh) HADOOP-9347. Add instructions to BUILDING.txt describing how to build on Windows. (Chris Nauroth via suresh) HADOOP-9348. Address TODO in winutils to add more command line usage and examples. (Chris Nauroth via suresh) HADOOP-9354. Windows native project files missing license headers. (Chris Nauroth via suresh) HADOOP-9356. Remove remaining references to cygwin/cygpath from scripts. (Chris Nauroth via suresh) HADOOP-9232. JniBasedUnixGroupsMappingWithFallback fails on Windows with UnsatisfiedLinkError. (Ivan Mitic via suresh) HADOOP-9368. Add timeouts to new tests in branch-trunk-win. (Arpit Agarwal via suresh) HADOOP-9373. Merge CHANGES.branch-trunk-win.txt to CHANGES.txt. (suresh) HADOOP-9372. Fix bad timeout annotations on tests. (Arpit Agarwal via suresh) HADOOP-9376. TestProxyUserFromEnv fails on a Windows domain joined machine. (Ivan Mitic via suresh) HADOOP-9365. TestHAZKUtil fails on Windows. (Ivan Mitic via suresh) HADOOP-9364. PathData#expandAsGlob does not return correct results for absolute paths on Windows. (Ivan Mitic via suresh) HADOOP-8973. DiskChecker cannot reliably detect an inaccessible disk on Windows with NTFS ACLs. (Chris Nauroth via suresh) HADOOP-9388. TestFsShellCopy fails on Windows. (Ivan Mitic via suresh) HADOOP-9387. Fix DF so that it won't execute a shell command on Windows to compute the file system/mount point. (Ivan Mitic via szetszwo) HADOOP-9353. Activate native-win maven profile by default on Windows. (Arpit Agarwal via szetszwo) HADOOP-9437. TestNativeIO#testRenameTo fails on Windows due to assumption that POSIX errno is embedded in NativeIOException. (Chris Nauroth via suresh) HADOOP-9443. Port winutils static code analysis change to trunk. (Chuan Liu via suresh) HADOOP-9290. Some tests cannot load native library on windows. (Chris Nauroth via suresh) HADOOP-9500. TestUserGroupInformation#testGetServerSideGroups fails on Windows due to failure to find winutils.exe. (Chris Nauroth via suresh) HADOOP-9490. LocalFileSystem#reportChecksumFailure not closing the checksum file handle before rename. (Ivan Mitic via suresh) HADOOP-9524. Fix ShellCommandFencer to work on Windows. (Arpit Agarwal via suresh) HADOOP-9413. Add common utils for File#setReadable/Writable/Executable & File#canRead/Write/Execute that work cross-platform. (Ivan Mitic via suresh) HADOOP-9532. HADOOP_CLIENT_OPTS is appended twice by Windows cmd scripts. (Chris Nauroth via suresh) HADOOP-9043. Disallow in winutils creating symlinks with forwards slashes. (Chris Nauroth and Arpit Agarwal via suresh) HADOOP-9483. winutils support for readlink command. (Arpit Agarwal via suresh) HADOOP-9488. FileUtil#createJarWithClassPath only substitutes environment variables from current process environment/does not support overriding when launching new process (Chris Nauroth via bikas) HADOOP-9556. disable HA tests on Windows that fail due to ZooKeeper client connection management bug. (Chris Nauroth via suresh) HADOOP-9553. TestAuthenticationToken fails on Windows. (Arpit Agarwal via suresh) HADOOP-9397. Incremental dist tar build fails. (Chris Nauroth via jlowe) HADOOP-9131. Turn off TestLocalFileSystem#testListStatusWithColons on Windows. (Chris Nauroth via suresh) HADOOP-9526. TestShellCommandFencer and TestShell fail on Windows. (Arpit Agarwal via suresh) HADOOP-8982. TestSocketIOWithTimeout fails on Windows. (Chris Nauroth via suresh) HADOOP-8958. ViewFs:Non absolute mount name failures when running multiple tests on Windows. (Chris Nauroth via suresh) HADOOP-9599. hadoop-config.cmd doesn't set JAVA_LIBRARY_PATH correctly. (Mostafa Elhemali via ivanmi) HADOOP-9637. Adding Native Fstat for Windows as needed by YARN. (Chuan Liu via cnauroth) HADOOP-9264. Port change to use Java untar API on Windows from branch-1-win to trunk. (Chris Nauroth via suresh) HADOOP-9678. TestRPC#testStopsAllThreads intermittently fails on Windows. (Ivan Mitic via cnauroth) HADOOP-9681. FileUtil.unTarUsingJava() should close the InputStream upon finishing. (Chuan Liu via cnauroth) HADOOP-9665. Fixed BlockDecompressorStream#decompress to return -1 rather than throw EOF at end of file. (Zhijie Shen via acmurthy) HADOOP-8440. HarFileSystem.decodeHarURI fails for URIs whose host contains numbers. (Ivan Mitic via cnauroth) HADOOP-9643. org.apache.hadoop.security.SecurityUtil calls toUpperCase(Locale.getDefault()) as well as toLowerCase(Locale.getDefault()) on hadoop.security.authentication value. (markrmiller@gmail.com via tucu) HADOOP-9701. mvn site ambiguous links in hadoop-common. (kkambatl via tucu) Release 2.0.6-alpha - 08/22/2013 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES Release 2.0.5-alpha - 06/06/2013 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-9407. commons-daemon 1.0.3 dependency has bad group id causing build issues. (Sangjin Lee via suresh) Release 2.0.4-alpha - 2013-04-25 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-9467. Metrics2 record filter should check name as well as tags. (Chris Nauroth and Ganeshan Iyler via llu) HADOOP-9406. hadoop-client leaks dependency on JDK tools jar. (tucu) HADOOP-9301. hadoop client servlet/jsp/jetty/tomcat JARs creating conflicts in Oozie & HttpFS. (tucu) HADOOP-9299. kerberos name resolution is kicking in even when kerberos is not configured (daryn) HADOOP-9408. misleading description for net.topology.table.file.name property in core-default.xml. (rajeshbabu via suresh) HADOOP-9444. Modify hadoop-policy.xml to replace unexpanded variables to a default value of '*'. (Roman Shaposhnik via vinodkv) HADOOP-9471. hadoop-client wrongfully excludes jetty-util JAR, breaking webhdfs. (tucu) Release 2.0.3-alpha - 2013-02-06 INCOMPATIBLE CHANGES HADOOP-8999. SASL negotiation is flawed (daryn) NEW FEATURES HADOOP-8561. Introduce HADOOP_PROXY_USER for secure impersonation in child hadoop client processes. (Yu Gao via llu) HADOOP-8597. Permit FsShell's text command to read Avro files. (Ivan Vladimirov Ivanov via cutting) HADOOP-9020. Add a SASL PLAIN server (daryn via bobby) HADOOP-9090. Support on-demand publish of metrics. (Mostafa Elhemali via suresh) HADOOP-9054. Add AuthenticationHandler that uses Kerberos but allows for an alternate form of authentication for browsers. (rkanter via tucu) IMPROVEMENTS HADOOP-8789. Tests setLevel(Level.OFF) should be Level.ERROR. (Andy Isaacson via eli) HADOOP-8755. Print thread dump when tests fail due to timeout. (Andrey Klochkov via atm) HADOOP-8806. libhadoop.so: dlopen should be better at locating libsnappy.so, etc. (Colin Patrick McCabe via eli) HADOOP-8812. ExitUtil#terminate should print Exception#toString. (eli) HADOOP-8736. Add Builder for building RPC server. (Brandon Li via Suresh) HDFS-3957. Change MutableQuantiles to use a shared thread for rolling over metrics. (Andrew Wang via todd) HADOOP-8851. Use -XX:+HeapDumpOnOutOfMemoryError JVM option in the forked tests. (Ivan A. Veselovsky via atm) HADOOP-8783. Improve RPC.Server's digest auth (daryn) HADOOP-8889. Upgrade to Surefire 2.12.3 (todd) HADOOP-8804. Improve Web UIs when the wildcard address is used. (Senthil Kumar via eli) HADOOP-8894. GenericTestUtils.waitFor should dump thread stacks on timeout (todd) HADOOP-8909. Hadoop Common Maven protoc calls must not depend on external sh script. (Chris Nauroth via suresh) HADOOP-8911. CRLF characters in source and text files. (Raja Aluri via suresh) HADOOP-8912. Add .gitattributes file to prevent CRLF and LF mismatches for source and text files. (Raja Aluri via suresh) HADOOP-8784. Improve IPC.Client's token use (daryn) HADOOP-8929. Add toString, other improvements for SampleQuantiles (todd) HADOOP-8922. Provide alternate JSONP output for JMXJsonServlet to allow javascript in browser (Damien Hardy via bobby) HADOOP-8931. Add Java version to startup message. (eli) HADOOP-8925. Remove the packaging. (eli) HADOOP-8985. Add namespace declarations in .proto files for languages other than java. (Binglin Chan via suresh) HADOOP-9009. Add SecurityUtil methods to get/set authentication method (daryn via bobby) HADOOP-9010. Map UGI authenticationMethod to RPC authMethod (daryn via bobby) HADOOP-9013. UGI should not hardcode loginUser's authenticationType (daryn via bobby) HADOOP-9014. Standardize creation of SaslRpcClients (daryn via bobby) HADOOP-9015. Standardize creation of SaslRpcServers (daryn via bobby) HADOOP-8860. Split MapReduce and YARN sections in documentation navigation. (tomwhite via tucu) HADOOP-9021. Enforce configured SASL method on the server (daryn via bobby) HADOO-8998. set Cache-Control no-cache header on all dynamic content. (tucu) HADOOP-9035. Generalize setup of LoginContext (daryn via bobby) HADOOP-9093. Move all the Exception in PathExceptions to o.a.h.fs package. (suresh) HADOOP-9042. Add a test for umask in FileSystemContractBaseTest. (Colin McCabe via eli) HADOOP-9127. Update documentation for ZooKeeper Failover Controller. (Daisuke Kobayashi via atm) HADOOP-9004. Allow security unit tests to use external KDC. (Stephen Chu via suresh) HADOOP-9147. Add missing fields to FIleStatus.toString. (Jonathan Allen via suresh) HADOOP-8427. Convert Forrest docs to APT, incremental. (adi2 via tucu) HADOOP-9162. Add utility to check native library availability. (Binglin Chang via suresh) HADOOP-9173. Add security token protobuf definition to common and use it in hdfs. (suresh) HADOOP-9119. Add test to FileSystemContractBaseTest to verify integrity of overwritten files. (Steve Loughran via suresh) HADOOP-9192. Move token related request/response messages to common. (suresh) HADOOP-8712. Change default hadoop.security.group.mapping to JniBasedUnixGroupsNetgroupMappingWithFallback (Robert Parker via todd) HADOOP-9106. Allow configuration of IPC connect timeout. (Rober Parker via suresh) HADOOP-9216. CompressionCodecFactory#getCodecClasses should trim the result of parsing by Configuration. (Tsuyoshi Ozawa via todd) HADOOP-9231. Parametrize staging URL for the uniformity of distributionManagement. (Konstantin Boudnik via suresh) HADOOP-9276. Allow BoundedByteArrayOutputStream to be resettable. (Arun Murthy via hitesh) HADOOP-7688. Add servlet handler check in HttpServer.start(). (Uma Maheswara Rao G via szetszwo) HADOOP-7886. Add toString to FileStatus. (SreeHari via jghoman) OPTIMIZATIONS HADOOP-8866. SampleQuantiles#query is O(N^2) instead of O(N). (Andrew Wang via atm) HADOOP-8926. hadoop.util.PureJavaCrc32 cache hit-ratio is low for static data (Gopal V via bobby) BUG FIXES HADOOP-9041. FsUrlStreamHandlerFactory could cause an infinite loop in FileSystem initialization. (Yanbo Liang and Radim Kolar via llu) HADOOP-8418. Update UGI Principal classes name for running with IBM JDK on 64 bits Windows. (Yu Gao via eyang) HADOOP-8795. BASH tab completion doesn't look in PATH, assumes path to executable is specified. (Sean Mackrory via atm) HADOOP-8780. Update DeprecatedProperties apt file. (Ahmed Radwan via tomwhite) HADOOP-8833. fs -text should make sure to call inputstream.seek(0) before using input stream. (tomwhite and harsh) HADOOP-8791. Fix rm command documentation to indicte it deletes files and not directories. (Jing Zhao via suresh) HADOOP-8855. SSL-based image transfer does not work when Kerberos is disabled. (todd via eli) HADOOP-8616. ViewFS configuration requires a trailing slash. (Sandy Ryza via atm) HADOOP-8756. Fix SEGV when libsnappy is in java.library.path but not LD_LIBRARY_PATH. (Colin Patrick McCabe via eli) HADOOP-8881. FileBasedKeyStoresFactory initialization logging should be debug not info. (tucu) HADOOP-8913. hadoop-metrics2.properties should give units in comment for sampling period. (Sandy Ryza via suresh) HADOOP-8878. Uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem and fsck to fail when security is on. (Arpit Gupta via suresh) HADOOP-8901. GZip and Snappy support may not work without unversioned libraries (Colin Patrick McCabe via todd) HADOOP-8883. Anonymous fallback in KerberosAuthenticator is broken. (rkanter via tucu) HADOOP-8900. BuiltInGzipDecompressor throws IOException - stored gzip size doesn't match decompressed size. (Andy Isaacson via suresh) HADOOP-8948. TestFileUtil.testGetDU fails on Windows due to incorrect assumption of line separator. (Chris Nauroth via suresh) HADOOP-8951. RunJar to fail with user-comprehensible error message if jar missing. (stevel via suresh) HADOOP-8713. TestRPCCompatibility fails intermittently with JDK7 (Trevor Robinson via tgraves) HADOOP-9012. IPC Client sends wrong connection context (daryn via bobby) HADOOP-7115. Add a cache for getpwuid_r and getpwgid_r calls (tucu) HADOOP-6607. Add different variants of non caching HTTP headers. (tucu) HADOOP-9049. DelegationTokenRenewer needs to be Singleton and FileSystems should register/deregister to/from. (Karthik Kambatla via tomwhite) HADOOP-9064. Augment DelegationTokenRenewer API to cancel the tokens on calls to removeRenewAction. (kkambatl via tucu) HADOOP-9103. UTF8 class does not properly decode Unicode characters outside the basic multilingual plane. (todd) HADOOP-9070. Kerberos SASL server cannot find kerberos key. (daryn via atm) HADOOP-6762. Exception while doing RPC I/O closes channel (Sam Rash and todd via todd) HADOOP-9126. FormatZK and ZKFC startup can fail due to zkclient connection establishment delay. (Rakesh R and todd via todd) HADOOP-9113. o.a.h.fs.TestDelegationTokenRenewer is failing intermittently. (Karthik Kambatla via eli) HADOOP-9135. JniBasedUnixGroupsMappingWithFallback should log at debug rather than info during fallback. (Colin Patrick McCabe via todd) HADOOP-9152. HDFS can report negative DFS Used on clusters with very small amounts of data. (Brock Noland via atm) HADOOP-9153. Support createNonRecursive in ViewFileSystem. (Sandy Ryza via tomwhite) HADOOP-9181. Set daemon flag for HttpServer's QueuedThreadPool. (Liang Xie via suresh) HADOOP-9155. FsPermission should have different default value, 777 for directory and 666 for file. (Binglin Chang via atm) HADOOP-9183. Potential deadlock in ActiveStandbyElector. (tomwhite) HADOOP-9203. RPCCallBenchmark should find a random available port. (Andrew Purtell via suresh) HADOOP-9178. src/main/conf is missing hadoop-policy.xml. (Sandy Ryza via eli) HADOOP-8816. HTTP Error 413 full HEAD if using kerberos authentication. (moritzmoeller via tucu) HADOOP-9212. Potential deadlock in FileSystem.Cache/IPC/UGI. (tomwhite) HADOOP-8589 ViewFs tests fail when tests and home dirs are nested. (sanjay Radia) HADOOP-9193. hadoop script can inadvertently expand wildcard arguments when delegating to hdfs script. (Andy Isaacson via todd) HADOOP-9215. when using cmake-2.6, libhadoop.so doesn't get created (only libhadoop.so.1.0.0) (Colin Patrick McCabe via todd) HADOOP-8857. hadoop.http.authentication.signature.secret.file docs should not state that secret is randomly generated. (tucu) HADOOP-9190. packaging docs is broken. (Andy Isaacson via tgraves) HADOOP-9221. Convert remaining xdocs to APT. (Andy Isaacson via atm) HADOOP-8981. TestMetricsSystemImpl fails on Windows. (Xuan Gong via suresh) HADOOP-9124. SortedMapWritable violates contract of Map interface for equals() and hashCode(). (Surenkumar Nihalani via tomwhite) HADOOP-9278. Fix the file handle leak in HarMetaData.parseMetaData() in HarFileSystem. (Chris Nauroth via szetszwo) HADOOP-9252. In StringUtils, humanReadableInt(..) has a race condition and the synchronization of limitDecimalTo2(double) can be avoided. (szetszwo) HADOOP-9260. Hadoop version may be not correct when starting name node or data node. (Chris Nauroth via jlowe) HADOOP-9289. FsShell rm -f fails for non-matching globs. (Daryn Sharp via suresh) Release 2.0.2-alpha - 2012-09-07 INCOMPATIBLE CHANGES HADOOP-8388. Remove unused BlockLocation serialization. (Colin Patrick McCabe via eli) HADOOP-8689. Make trash a server side configuration option. (eli) HADOOP-8710. Remove ability for users to easily run the trash emptire. (eli) HADOOP-8794. Rename YARN_HOME to HADOOP_YARN_HOME. (vinodkv via acmurthy) NEW FEATURES HDFS-3042. Automatic failover support for NameNode HA (todd) (see dedicated section below for breakdown of subtasks) HADOOP-8135. Add ByteBufferReadable interface to FSDataInputStream. (Henry Robinson via atm) HADOOP-8458. Add management hook to AuthenticationHandler to enable delegation token operations support (tucu) HADOOP-8465. hadoop-auth should support ephemeral authentication (tucu) HADOOP-8644. AuthenticatedURL should be able to use SSLFactory. (tucu) HADOOP-8581. add support for HTTPS to the web UIs. (tucu) HADOOP-7754. Expose file descriptors from Hadoop-wrapped local FileSystems (todd and ahmed via tucu) HADOOP-8240. Add a new API to allow users to specify a checksum type on FileSystem.create(..). (Kihwal Lee via szetszwo) IMPROVEMENTS HADOOP-8340. SNAPSHOT build versions should compare as less than their eventual final release. (todd) HADOOP-8361. Avoid out-of-memory problems when deserializing strings. (Colin Patrick McCabe via eli) HADOOP-8224. Don't hardcode hdfs.audit.logger in the scripts. (Tomohiko Kinebuchi via eli) HADOOP-8398. Cleanup BlockLocation. (eli) HADOOP-8422. Deprecate FileSystem#getDefault* and getServerDefault methods that don't take a Path argument. (eli) HADOOP-8323. Add javadoc and tests for Text.clear() behavior (harsh) HADOOP-8358. Config-related WARN for dfs.web.ugi can be avoided. (harsh) HADOOP-8450. Remove src/test/system. (eli) HADOOP-8244. Improve comments on ByteBufferReadable.read. (Henry Robinson via atm) HADOOP-8368. Use CMake rather than autotools to build native code (ccccabe via tucu) HADOOP-8524. Allow users to get source of a Configuration parameter (harsh) HADOOP-8449. hadoop fs -text fails with compressed sequence files with the codec file extension (harsh) HADOOP-6802. Remove FS_CLIENT_BUFFER_DIR_KEY = "fs.client.buffer.dir" from CommonConfigurationKeys.java (not used, deprecated) (Sho Shimauchi via harsh) HADOOP-3450. Add tests to Local Directory Allocator for asserting their URI-returning capability (Sho Shimauchi via harsh) HADOOP-8463. hadoop.security.auth_to_local needs a key definition and doc. (Madhukara Phatak via eli) HADOOP-8533. Remove parallel call ununsed capability in RPC. (Brandon Li via suresh) HADOOP-8423. MapFile.Reader.get() crashes jvm or throws EOFException on Snappy or LZO block-compressed data (todd via harsh) HADOOP-8541. Better high-percentile latency metrics. (Andrew Wang via atm) HADOOP-8362. Improve exception message when Configuration.set() is called with a null key or value. (Madhukara Phatak and Suresh Srinivas via harsh) HADOOP-7818. DiskChecker#checkDir should fail if the directory is not executable. (Madhukara Phatak via harsh) HADOOP-8531. SequenceFile Writer can throw out a better error if a serializer or deserializer isn't available (Madhukara Phatak via harsh) HADOOP-8609. IPC server logs a useless message when shutting down socket. (Jon Zuanich via atm) HADOOP-8620. Add -Drequire.fuse and -Drequire.snappy. (Colin Patrick McCabe via eli) HADOOP-8687. Upgrade log4j to 1.2.17. (eli) HADOOP-8278. Make sure components declare correct set of dependencies. (tomwhite) HADOOP-8700. Use enum to define the checksum constants in DataChecksum. (szetszwo) HADOOP-8686. Fix warnings in native code. (Colin Patrick McCabe via eli) HADOOP-8239. Add subclasses of MD5MD5CRC32FileChecksum to support file checksum with CRC32C. (Kihwal Lee via szetszwo) HADOOP-8619. WritableComparator must implement no-arg constructor. (Chris Douglas via Suresh) HADOOP-8075. Lower native-hadoop library log from info to debug. (Hızır Sefa İrken via eli) HADOOP-8748. Refactor DFSClient retry utility methods to a new class in org.apache.hadoop.io.retry. (Arun C Murthy via szetszwo) HADOOP-8754. Deprecate all the RPC.getServer() variants. (Brandon Li via szetszwo) HADOOP-8801. ExitUtil#terminate should capture the exception stack trace. (eli) HADOOP-8819. Incorrectly & is used instead of && in some file system implementations. (Brandon Li via suresh) HADOOP-7808. Port HADOOP-7510 - Add configurable option to use original hostname in token instead of IP to allow server IP change. (Daryn Sharp via suresh) HADOOP-8367 Improve documentation of declaringClassProtocolName in rpc headers. (Sanjay Radia) HADOOP-8624. ProtobufRpcEngine should log all RPCs if TRACE logging is enabled (todd) BUG FIXES HADOOP-8372. NetUtils.normalizeHostName() incorrectly handles hostname starting with a numeric character. (Junping Du via suresh) HADOOP-8393. hadoop-config.sh missing variable exports, causes Yarn jobs to fail with ClassNotFoundException MRAppMaster. (phunt via tucu) HADOOP-8316. Audit logging should be disabled by default. (eli) HADOOP-8400. All commands warn "Kerberos krb5 configuration not found" when security is not enabled. (tucu) HADOOP-8406. CompressionCodecFactory.CODEC_PROVIDERS iteration is thread-unsafe (todd) HADOOP-8287. etc/hadoop is missing hadoop-env.sh (eli) HADOOP-8408. MR doesn't work with a non-default ViewFS mount table and security enabled. (atm via eli) HADOOP-8329. Build fails with Java 7. (eli) HADOOP-8268. A few pom.xml across Hadoop project may fail XML validation. (Radim Kolar via harsh) HADOOP-8444. Fix the tests FSMainOperationsBaseTest.java and FileContextMainOperationsBaseTest.java to avoid potential test failure (Madhukara Phatak via harsh) HADOOP-8452. DN logs backtrace when running under jsvc and /jmx is loaded (Andy Isaacson via bobby) HADOOP-8460. Document proper setting of HADOOP_PID_DIR and HADOOP_SECURE_DN_PID_DIR (bobby) HADOOP-8466. hadoop-client POM incorrectly excludes avro. (bmahe via tucu) HADOOP-8481. update BUILDING.txt to talk about cmake rather than autotools. (Colin Patrick McCabe via eli) HADOOP-8485. Don't hardcode "Apache Hadoop 0.23" in the docs. (eli) HADOOP-8488. test-patch.sh gives +1 even if the native build fails. (Colin Patrick McCabe via eli) HADOOP-8507. Avoid OOM while deserializing DelegationTokenIdentifer. (Colin Patrick McCabe via eli) HADOOP-8433. Don't set HADOOP_LOG_DIR in hadoop-env.sh. (Brahma Reddy Battula via eli) HADOOP-8509. JarFinder duplicate entry: META-INF/MANIFEST.MF exception (tucu) HADOOP-8512. AuthenticatedURL should reset the Token when the server returns other than OK on authentication (tucu) HADOOP-8168. empty-string owners or groups causes {{MissingFormatWidthException}} in o.a.h.fs.shell.Ls.ProcessPath() (ekoontz via tucu) HADOOP-8438. hadoop-validate-setup.sh refers to examples jar file which doesn't exist (Devaraj K via umamahesh) HADOOP-8538. CMake builds fail on ARM. (Trevor Robinson via eli) HADOOP-8547. Package hadoop-pipes examples/bin directory (again). (Colin Patrick McCabe via eli) HADOOP-8563. don't package hadoop-pipes examples/bin (Colin Patrick McCabe via tgraves) HADOOP-8566. AvroReflectSerializer.accept(Class) throws a NPE if the class has no package (primitive types and arrays). (tucu) HADOOP-8586. Fixup a bunch of SPNEGO misspellings. (eli) HADOOP-3886. Error in javadoc of Reporter, Mapper and Progressable (Jingguo Yao via harsh) HADOOP-8587. HarFileSystem access of harMetaCache isn't threadsafe. (eli) HADOOP-8585. Fix initialization circularity between UserGroupInformation and HadoopConfiguration. (Colin Patrick McCabe via atm) HADOOP-8552. Conflict: Same security.log.file for multiple users. (kkambatl via tucu) HADOOP-8537. Fix TFile tests to pass even when native zlib support is not compiled. (todd) HADOOP-8626. Typo in default setting for hadoop.security.group.mapping.ldap.search.filter.user. (Jonathan Natkins via atm) HADOOP-8480. The native build should honor -DskipTests. (Colin Patrick McCabe via eli) HADOOP-8659. Native libraries must build with soft-float ABI for Oracle JVM on ARM. (Trevor Robinson via todd) HADOOP-8654. TextInputFormat delimiter bug (Gelesh and Jason Lowe via bobby) HADOOP-8614. IOUtils#skipFully hangs forever on EOF. (Colin Patrick McCabe via eli) HADOOP-8720. TestLocalFileSystem should use test root subdirectory. (Vlad Rozov via eli) HADOOP-8721. ZKFC should not retry 45 times when attempting a graceful fence during a failover. (Vinayakumar B via atm) HADOOP-8632. Configuration leaking class-loaders (Costin Leau via bobby) HADOOP-4572. Can not access user logs - Jetty is not configured by default to serve aliases/symlinks (ahmed via tucu) HADOOP-8660. TestPseudoAuthenticator failing with NPE. (tucu) HADOOP-8699. some common testcases create core-site.xml in test-classes making other testcases to fail. (tucu) HADOOP-8031. Configuration class fails to find embedded .jar resources; should use URL.openStream() (genman via tucu) HADOOP-8737. cmake: always use JAVA_HOME to find libjvm.so, jni.h, jni_md.h. (Colin Patrick McCabe via eli) HADOOP-8747. Syntax error on cmake version 2.6 patch 2 in JNIFlags.cmake. (cmccabe via tucu) HADOOP-8722. Update BUILDING.txt with latest snappy info. (Colin Patrick McCabe via eli) HADOOP-8764. CMake: HADOOP-8737 broke ARM build. (Trevor Robinson via eli) HADOOP-8770. NN should not RPC to self to find trash defaults. (eli) HADOOP-8648. libhadoop: native CRC32 validation crashes when io.bytes.per.checksum=1. (Colin Patrick McCabe via eli) HADOOP-8766. FileContextMainOperationsBaseTest should randomize the root dir. (Colin Patrick McCabe via atm) HADOOP-8749. HADOOP-8031 changed the way in which relative xincludes are handled in Configuration. (ahmed via tucu) HADOOP-8431. Running distcp wo args throws IllegalArgumentException. (Sandy Ryza via eli) HADOOP-8775. MR2 distcp permits non-positive value to -bandwidth option which causes job never to complete. (Sandy Ryza via atm) HADOOP-8781. hadoop-config.sh should add JAVA_LIBRARY_PATH to LD_LIBRARY_PATH. (tucu) BREAKDOWN OF HDFS-3042 SUBTASKS HADOOP-8220. ZKFailoverController doesn't handle failure to become active correctly (todd) HADOOP-8228. Auto HA: Refactor tests and add stress tests. (todd) HADOOP-8215. Security support for ZK Failover controller (todd) HADOOP-8245. Fix flakiness in TestZKFailoverController (todd) HADOOP-8257. TestZKFailoverControllerStress occasionally fails with Mockito error (todd) HADOOP-8260. Replace ClientBaseWithFixes with our own modified copy of the class (todd) HADOOP-8246. Auto-HA: automatically scope znode by nameservice ID (todd) HADOOP-8247. Add a config to enable auto-HA, which disables manual FailoverController (todd) HADOOP-8306. ZKFC: improve error message when ZK is not running. (todd) HADOOP-8279. Allow manual failover to be invoked when auto-failover is enabled. (todd) HADOOP-8276. Auto-HA: add config for java options to pass to zkfc daemon (todd via eli) HADOOP-8405. ZKFC tests leak ZK instances. (todd) Release 2.0.0-alpha - 05-23-2012 INCOMPATIBLE CHANGES HADOOP-7920. Remove Avro Rpc. (suresh) NEW FEATURES HADOOP-7773. Add support for protocol buffer based RPC engine. (suresh) HADOOP-7875. Add helper class to unwrap protobuf ServiceException. (suresh) HADOOP-7454. Common side of High Availability Framework (HDFS-1623) Contributed by Todd Lipcon, Aaron T. Myers, Eli Collins, Uma Maheswara Rao G, Bikas Saha, Suresh Srinivas, Jitendra Nath Pandey, Hari Mankude, Brandon Li, Sanjay Radia, Mingjie Lai, and Gregory Chanan HADOOP-8121. Active Directory Group Mapping Service. (Jonathan Natkins via atm) HADOOP-7030. Add TableMapping topology implementation to read host to rack mapping from a file. (Patrick Angeles and tomwhite via tomwhite) HADOOP-8206. Common portion of a ZK-based failover controller (todd) HADOOP-8210. Common side of HDFS-3148: The client should be able to use multiple local interfaces for data transfer. (eli) HADOOP-8343. Allow configuration of authorization for JmxJsonServlet and MetricsServlet (tucu) IMPROVEMENTS HADOOP-7524. Change RPC to allow multiple protocols including multuple versions of the same protocol (sanjay Radia) HADOOP-7607. Simplify the RPC proxy cleanup process. (atm) HADOOP-7687. Make getProtocolSignature public (sanjay) HADOOP-7693. Enhance AvroRpcEngine to support the new #addProtocol interface introduced in HADOOP-7524. (cutting) HADOOP-7716. RPC protocol registration on SS does not log the protocol name (only the class which may be different) (sanjay) HADOOP-7776. Make the Ipc-Header in a RPC-Payload an explicit header. (sanjay) HADOOP-7862. Move the support for multiple protocols to lower layer so that Writable, PB and Avro can all use it (Sanjay) HADOOP-7876. Provided access to encoded key in DelegationKey for use in protobuf based RPCs. (suresh) HADOOP-7899. Generate proto java files as part of the build. (tucu) HADOOP-7957. Classes deriving GetGroupsBase should be able to override proxy creation. (jitendra) HADOOP-7965. Support for protocol version and signature in PB. (jitendra) HADOOP-8070. Add a standalone benchmark for RPC call performance. (todd) HADOOP-8084. Updates ProtoBufRpc engine to not do an unnecessary copy for RPC request/response. (ddas) HADOOP-8085. Add RPC metrics to ProtobufRpcEngine. (Hari Mankude via suresh) HADOOP-8098. KerberosAuthenticatorHandler should use _HOST replacement to resolve principal name (tucu) HADOOP-8118. In metrics2.util.MBeans, change log level to trace for the stack trace of InstanceAlreadyExistsException. (szetszwo) HADOOP-8125. make hadoop-client set of curated jars available in a distribution tarball (rvs via tucu) HADOOP-7717. Move handling of concurrent client fail-overs to RetryInvocationHandler (atm) HADOOP-7728. Enable task memory management to be configurable in hadoop config setup script. (ramya) HADOOP-7358. Improve log levels when exceptions caught in RPC handler (Todd Lipcon via shv) HADOOP-7557 Make IPC header be extensible (sanjay radia) HADOOP-7806. Support binding to sub-interfaces (eli) HADOOP-6941. Adds support for building Hadoop with IBM's JDK (Stephen Watt, Eli and ddas) HADOOP-8183. Stop using "mapred.used.genericoptions.parser" (harsh) HADOOP-6924. Adds a directory to the list of directories to search for the libjvm.so file. The new directory is found by running a 'find' command and the first output is taken. This was done to handle the build of Hadoop with IBM's JDK. (Stephen Watt, Guillermo Cabrera and ddas) HADOOP-8200. Remove HADOOP_[JOBTRACKER|TASKTRACKER]_OPTS. (eli) HADOOP-8184. ProtoBuf RPC engine uses the IPC layer reply packet. (Sanjay Radia via szetszwo) HADOOP-8163. Improve ActiveStandbyElector to provide hooks for fencing old active. (todd) HADOOP-8193. Refactor FailoverController/HAAdmin code to add an abstract class for "target" services. (todd) HADOOP-8212. Improve ActiveStandbyElector's behavior when session expires (todd) HADOOP-8216. Address log4j.properties inconsistencies btw main and template dirs. (Patrick Hunt via eli) HADOOP-8149. Cap space usage of default log4j rolling policy. (Patrick Hunt via eli) HADOOP-8211. Update commons-net version to 3.1. (eli) HADOOP-8236. haadmin should have configurable timeouts for failover commands. (todd) HADOOP-8242. AbstractDelegationTokenIdentifier: add getter methods for owner and realuser. (Colin Patrick McCabe via eli) HADOOP-8007. Use substitution tokens for fencing argument (todd) HADOOP-8077. HA: fencing method should be able to be configured on a per-NN or per-NS basis (todd) HADOOP-8086. KerberosName silently sets defaultRealm to "" if the Kerberos config is not found, it should log a WARN (tucu) HADOOP-8280. Move VersionUtil/TestVersionUtil and GenericTestUtils from HDFS into Common. (Ahmed Radwan via atm) HADOOP-8117. Upgrade test build to Surefire 2.12 (todd) HADOOP-8152. Expand public APIs for security library classes. (atm via eli) HADOOP-7549. Use JDK ServiceLoader mechanism to find FileSystem implementations. (tucu) HADOOP-8185. Update namenode -format documentation and add -nonInteractive and -force. (Arpit Gupta via atm) HADOOP-8214. make hadoop script recognize a full set of deprecated commands (rvs via tucu) HADOOP-8347. Hadoop Common logs misspell 'successful'. (Philip Zeyliger via eli) HADOOP-8350. Improve NetUtils.getInputStream to return a stream which has a tunable timeout. (todd) HADOOP-8356. FileSystem service loading mechanism should print the FileSystem impl it is failing to load (tucu) HADOOP-8353. hadoop-daemon.sh and yarn-daemon.sh can be misleading on stop. (Roman Shaposhnik via atm) HADOOP-8113. Correction to BUILDING.txt: HDFS needs ProtocolBuffer, too (not just MapReduce). Contributed by Eugene Koontz. HADOOP-8285 Use ProtoBuf for RpcPayLoadHeader (sanjay radia) HADOOP-8366 Use ProtoBuf for RpcResponseHeader (sanjay radia) HADOOP-7729. Send back valid HTTP response if user hits IPC port with HTTP GET. (todd) HADOOP-7987. Support setting the run-as user in unsecure mode. (jitendra) HADOOP-7994. Remove getProtocolVersion and getProtocolSignature from the client side translator and server side implementation. (jitendra) OPTIMIZATIONS BUG FIXES HADOOP-8199. Fix issues in start-all.sh and stop-all.sh (Devaraj K via umamahesh) HADOOP-7635. RetryInvocationHandler should release underlying resources on close. (atm) HADOOP-7695. RPC.stopProxy can throw unintended exception while logging error. (atm) HADOOP-7833. Fix findbugs warnings in protobuf generated code. (John Lee via suresh) HADOOP-7897. ProtobufRpcEngine client side exception mechanism is not consistent with WritableRpcEngine. (suresh) HADOOP-7913. Fix bug in ProtoBufRpcEngine. (sanjay) HADOOP-7892. IPC logs too verbose after "RpcKind" introduction. (todd) HADOOP-7968. Errant println left in RPC.getHighestSupportedProtocol. (Sho Shimauchi via harsh) HADOOP-7931. o.a.h.ipc.WritableRpcEngine should have a way to force initialization. (atm) HADOOP-8104. Inconsistent Jackson versions (tucu) HADOOP-8119. Fix javac warnings in TestAuthenticationFilter in hadoop-auth. (szetszwo) HADOOP-7888. TestFailoverProxy fails intermittently on trunk. (Jason Lowe via atm) HADOOP-8154. DNS#getIPs shouldn't silently return the local host IP for bogus interface names. (eli) HADOOP-8169. javadoc generation fails with java.lang.OutOfMemoryError: Java heap space (tgraves via bobby) HADOOP-8167. Configuration deprecation logic breaks backwards compatibility (tucu) HADOOP-8189. LdapGroupsMapping shouldn't throw away IOException. (Jonathan Natkins via atm) HADOOP-8191. SshFenceByTcpPort uses netcat incorrectly (todd) HADOOP-8157. Fix race condition in Configuration that could cause spurious ClassNotFoundExceptions after a GC. (todd) HADOOP-8197. Configuration logs WARNs on every use of a deprecated key (tucu) HADOOP-8159. NetworkTopology: getLeaf should check for invalid topologies. (Colin Patrick McCabe via eli) HADOOP-8204. TestHealthMonitor fails occasionally (todd) HADOOP-8202. RPC stopProxy() does not close the proxy correctly. (Hari Mankude via suresh) HADOOP-8218. RPC.closeProxy shouldn't throw error when closing a mock (todd) HADOOP-8238. NetUtils#getHostNameOfIP blows up if given ip:port string w/o port. (eli) HADOOP-8243. Security support broken in CLI (manual) failover controller (todd) HADOOP-8251. Fix SecurityUtil.fetchServiceTicket after HADOOP-6941 (todd) HADOOP-8249. invalid hadoop-auth cookies should trigger authentication if info is avail before returning HTTP 401 (tucu) HADOOP-8261. Har file system doesn't deal with FS URIs with a host but no port. (atm) HADOOP-8263. Stringification of IPC calls not useful (todd) HADOOP-8264. Remove irritating double double quotes in front of hostname (Bernd Fondermann via bobby) HADOOP-8270. hadoop-daemon.sh stop action should return 0 for an already stopped service. (Roman Shaposhnik via eli) HADOOP-8144. pseudoSortByDistance in NetworkTopology doesn't work properly if no local node and first node is local rack node. (Junping Du) HADOOP-8282. start-all.sh refers incorrectly start-dfs.sh existence for starting start-yarn.sh. (Devaraj K via eli) HADOOP-7350. Use ServiceLoader to discover compression codec classes. (tomwhite) HADOOP-8284. clover integration broken, also mapreduce poms are pulling in clover as a dependency. (phunt via tucu) HADOOP-8309. Pseudo & Kerberos AuthenticationHandler should use getType() to create token (tucu) HADOOP-8314. HttpServer#hasAdminAccess should return false if authorization is enabled but user is not authenticated. (tucu) HADOOP-8296. hadoop/yarn daemonlog usage wrong (Devaraj K via tgraves) HADOOP-8310. FileContext#checkPath should handle URIs with no port. (atm) HADOOP-8321. TestUrlStreamHandler fails. (tucu) HADOOP-8325. Add a ShutdownHookManager to be used by different components instead of the JVM shutdownhook (tucu) HADOOP-8275. Range check DelegationKey length. (Colin Patrick McCabe via eli) HADOOP-8342. HDFS command fails with exception following merge of HADOOP-8325 (tucu) HADOOP-8346. Makes oid changes to make SPNEGO work. Was broken due to fixes introduced by the IBM JDK compatibility patch. (ddas) HADOOP-8355. SPNEGO filter throws/logs exception when authentication fails (tucu) HADOOP-8349. ViewFS doesn't work when the root of a file system is mounted. (atm) HADOOP-8328. Duplicate FileSystem Statistics object for 'file' scheme. (tomwhite) HADOOP-8359. Fix javadoc warnings in Configuration. (Anupam Seth via szetszwo) HADOOP-7988. Upper case in hostname part of the principals doesn't work with kerberos. (jitendra) BREAKDOWN OF HADOOP-7454 SUBTASKS HADOOP-7455. HA: Introduce HA Service Protocol Interface. (suresh) HADOOP-7774. HA: Administrative CLI to control HA daemons. (todd) HADOOP-7896. HA: if both NNs are in Standby mode, client needs to try failing back and forth several times with sleeps. (atm) HADOOP-7922. Improve some logging for client IPC failovers and StandbyExceptions (todd) HADOOP-7921. StandbyException should extend IOException (todd) HADOOP-7928. HA: Client failover policy is incorrectly trying to fail over all IOExceptions (atm) HADOOP-7925. Add interface and update CLI to query current state to HAServiceProtocol (eli via todd) HADOOP-7932. Make client connection retries on socket time outs configurable. (Uma Maheswara Rao G via todd) HADOOP-7924. FailoverController for client-based configuration (eli) HADOOP-7961. Move HA fencing to common. (eli) HADOOP-7970. HAServiceProtocol methods must throw IOException. (Hari Mankude via suresh). HADOOP-7992. Add ZKClient library to facilitate leader election. (Bikas Saha via suresh). HADOOP-7983. HA: failover should be able to pass args to fencers. (eli) HADOOP-7938. HA: the FailoverController should optionally fence the active during failover. (eli) HADOOP-7991. HA: the FailoverController should check the standby is ready before failing over. (eli) HADOOP-8038. Add 'ipc.client.connect.max.retries.on.timeouts' entry in core-default.xml file. (Uma Maheswara Rao G via atm) HADOOP-8041. Log a warning when a failover is first attempted (todd) HADOOP-8068. void methods can swallow exceptions when going through failover path (todd) HADOOP-8116. RetriableCommand is using RetryPolicy incorrectly after HADOOP-7896. (atm) HADOOP-8317. Update maven-assembly-plugin to 2.3 - fix build on FreeBSD (Radim Kolar via bobby) HADOOP-8172. Configuration no longer sets all keys in a deprecated key list. (Anupam Seth via bobby) HADOOP-7868. Hadoop native fails to compile when default linker option is -Wl,--as-needed. (Trevor Robinson via eli) HADOOP-8655. Fix TextInputFormat for large deliminators. (Gelesh via bobby) HADOOP-7900. LocalDirAllocator confChanged() accesses conf.get() twice (Ravi Gummadi via Uma Maheswara Rao G) HADOOP-8146. FsShell commands cannot be interrupted (Daryn Sharp via Uma Maheswara Rao G) HADOOP-8018. Hudson auto test for HDFS has started throwing javadoc (Jon Eagles via bobby) HADOOP-8001 ChecksumFileSystem's rename doesn't correctly handle checksum files. (Daryn Sharp via bobby) HADOOP-8006 TestFSInputChecker is failing in trunk. (Daryn Sharp via bobby) HADOOP-7998. CheckFileSystem does not correctly honor setVerifyChecksum (Daryn Sharp via bobby) HADOOP-7606. Upgrade Jackson to version 1.7.1 to match the version required by Jersey (Alejandro Abdelnur via atm) Release 0.23.11 - UNRELEASED INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-10129. Distcp may succeed when it fails (daryn) HADOOP-10332. HttpServer's jetty audit log always logs 200 OK (jeagles) HADOOP-8826. Docs still refer to 0.20.205 as stable line (Mit Desai via jeagles) Release 0.23.10 - UNRELEASED INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-9686. Easy access to final parameters in Configuration (Jason Lowe via jeagles) HADOOP-8704. add request logging to jetty/httpserver (jeagles) OPTIMIZATIONS HADOOP-9956. RPC listener inefficiently assigns connections to readers (daryn) HADOOP-9955. RPC idle connection closing is extremely inefficient (daryn) BUG FIXES Release 0.23.9 - 2013-07-08 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-9581. hadoop --config non-existent directory should result in error (Ashwin Shankar via jlowe) HADOOP-9582. Non-existent file to "hadoop fs -conf" doesn't throw error (Ashwin Shankar via jlowe) Release 0.23.8 - 2013-06-05 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-9222. Cover package with org.apache.hadoop.io.lz4 unit tests (Vadim Bondarev via jlowe) HADOOP-9233. Cover package org.apache.hadoop.io.compress.zlib with unit tests (Vadim Bondarev via jlowe) HADOOP-9469. mapreduce/yarn source jars not included in dist tarball (Robert Parker via tgraves) HADOOP-9504. MetricsDynamicMBeanBase has concurrency issues in createMBeanInfo (Liang Xie via jlowe) HADOOP-9614. smart-test-patch.sh hangs for new version of patch (2.7.1) (Ravi Prakash via jeagles) Release 0.23.7 - 2013-04-18 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-8849. FileUtil#fullyDelete should grant the target directories +rwx permissions (Ivan A. Veselovsky via bobby) HADOOP-9067. provide test for LocalFileSystem.reportChecksumFailure (Ivan A. Veselovsky via bobby) HADOOP-9336. Allow UGI of current connection to be queried. (Daryn Sharp via kihwal) HADOOP-9352. Expose UGI.setLoginUser for tests (daryn) HADOOP-9209. Add shell command to dump file checksums (Todd Lipcon via jeagles) HADOOP-9374. Add tokens from -tokenCacheFile into UGI (daryn) HADOOP-8711. IPC Server supports adding exceptions for which the message is printed and the stack trace is not printed to avoid chatter. (Brandon Li via Suresh) OPTIMIZATIONS HADOOP-8462. Native-code implementation of bzip2 codec. (Govind Kamat via jlowe) BUG FIXES HADOOP-9302. HDFS docs not linked from top level (Andy Isaacson via tgraves) HADOOP-9303. command manual dfsadmin missing entry for restoreFailedStorage option (Andy Isaacson via tgraves) HADOOP-9339. IPC.Server incorrectly sets UGI auth type (Daryn Sharp via kihwal) Release 0.23.6 - 2013-02-06 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-9217. Print thread dumps when hadoop-common tests fail. (Andrey Klochkov via suresh) HADOOP-9247. Parametrize Clover "generateXxx" properties to make them re-definable via -D in mvn calls. (Ivan A. Veselovsky via suresh) OPTIMIZATIONS BUG FIXES HADOOP-9072. Hadoop-Common-0.23-Build Fails to build in Jenkins (Robert Parker via tgraves) HADOOP-8992. Enhance unit-test coverage of class HarFileSystem (Ivan A. Veselovsky via bobby) HADOOP-9038. unit-tests for AllocatorPerContext.PathIterator (Ivan A. Veselovsky via bobby) HADOOP-9105. FsShell -moveFromLocal erroneously fails (daryn via bobby) HADOOP-9097. Maven RAT plugin is not checking all source files (tgraves) HADOOP-9255. relnotes.py missing last jira (tgraves) Release 0.23.5 - 2012-11-28 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-8932. JNI-based user-group mapping modules can be too chatty on lookup failures. (Kihwal Lee via suresh) HADOOP-8930. Cumulative code coverage calculation (Andrey Klochkov via bobby) OPTIMIZATIONS BUG FIXES HADOOP-8906. paths with multiple globs are unreliable. (Daryn Sharp via jlowe) HADOOP-8811. Compile hadoop native library in FreeBSD (Radim Kolar via bobby) HADOOP-8962. RawLocalFileSystem.listStatus fails when a child filename contains a colon (jlowe via bobby) HADOOP-8986. Server$Call object is never released after it is sent (bobby) HADOOP-9022. Hadoop distcp tool fails to copy file if -m 0 specified (Jonathan Eagles vai bobby) HADOOP-9025. org.apache.hadoop.tools.TestCopyListing failing (Jonathan Eagles via jlowe) Release 0.23.4 INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-8822. relnotes.py was deleted post mavenization (bobby) OPTIMIZATIONS BUG FIXES HADOOP-8843. Old trash directories are never deleted on upgrade from 1.x (jlowe) HADOOP-8684. Deadlock between WritableComparator and WritableComparable. (Jing Zhao via suresh) Release 0.23.3 INCOMPATIBLE CHANGES HADOOP-7967. Need generalized multi-token filesystem support (daryn) NEW FEATURES IMPROVEMENTS HADOOP-8108. Move method getHostPortString() from NameNode to NetUtils. (Brandon Li via jitendra) HADOOP-8288. Remove references of mapred.child.ulimit etc. since they are not being used any more (Ravi Prakash via bobby) HADOOP-8535. Cut hadoop build times in half (Job Eagles via bobby) HADOOP-8525. Provide Improved Traceability for Configuration (bobby) OPTIMIZATIONS BUG FIXES HADOOP-8088. User-group mapping cache incorrectly does negative caching on transient failures (Khiwal Lee via bobby) HADOOP-8179. risk of NPE in CopyCommands processArguments() (Daryn Sharp via bobby) HADOOP-6963. In FileUtil.getDU(..), neither include the size of directories nor follow symbolic links. (Ravi Prakash via szetszwo) HADOOP-8180. Remove hsqldb since its not needed from pom.xml (Ravi Prakash via tgraves) HADOOP-8014. ViewFileSystem does not correctly implement getDefaultBlockSize, getDefaultReplication, getContentSummary (John George via bobby) HADOOP-7510. Tokens should use original hostname provided instead of ip (Daryn Sharp via bobby) HADOOP-8283. Allow tests to control token service value (Daryn Sharp via bobby) HADOOP-8286. Simplify getting a socket address from conf (Daryn Sharp via bobby) HADOOP-8227. Allow RPC to limit ephemeral port range. (bobby) HADOOP-8305. distcp over viewfs is broken (John George via bobby) HADOOP-8334. HttpServer sometimes returns incorrect port (Daryn Sharp via bobby) HADOOP-8330. Update TestSequenceFile.testCreateUsesFsArg() for HADOOP-8305. (John George via szetszwo) HADOOP-8335. Improve Configuration's address handling (Daryn Sharp via bobby) HADOOP-8327. distcpv2 and distcpv1 jars should not coexist (Dave Thompson via bobby) HADOOP-8341. Fix or filter findbugs issues in hadoop-tools (bobby) HADOOP-8373. Port RPC.getServerAddress to 0.23 (Daryn Sharp via bobby) HADOOP-8495. Update Netty to avoid leaking file descriptors during shuffle (Jason Lowe via tgraves) HADOOP-8129. ViewFileSystemTestSetup setupForViewFileSystem is erring (Ahmed Radwan and Ravi Prakash via bobby) HADOOP-8573. Configuration tries to read from an inputstream resource multiple times (Robert Evans via tgraves) HADOOP-8599. Non empty response from FileSystem.getFileBlockLocations when asking for data beyond the end of file. (Andrey Klochkov via todd) HADOOP-8606. FileSystem.get may return the wrong filesystem (Daryn Sharp via bobby) HADOOP-8551. fs -mkdir creates parent directories without the -p option (John George via bobby) HADOOP-8613. AbstractDelegationTokenIdentifier#getUser() should set token auth type. (daryn) HADOOP-8627. FS deleteOnExit may delete the wrong path (daryn via bobby) HADOOP-8634. Ensure FileSystem#close doesn't squawk for deleteOnExit paths (daryn via bobby) HADOOP-8550. hadoop fs -touchz automatically created parent directories (John George via bobby) HADOOP-8635. Cannot cancel paths registered deleteOnExit (daryn via bobby) HADOOP-8637. FilterFileSystem#setWriteChecksum is broken (daryn via bobby) HADOOP-8370. Native build failure: javah: class file for org.apache.hadoop.classification.InterfaceAudience not found (Trevor Robinson via tgraves) HADOOP-8633. Interrupted FsShell copies may leave tmp files (Daryn Sharp via tgraves) HADOOP-8703. distcpV2: turn CRC checking off for 0 byte size (Dave Thompson via bobby) HADOOP-8390. TestFileSystemCanonicalization fails with JDK7 (Trevor Robinson via tgraves) HADOOP-8692. TestLocalDirAllocator fails intermittently with JDK7 (Trevor Robinson via tgraves) HADOOP-8693. TestSecurityUtil fails intermittently with JDK7 (Trevor Robinson via tgraves) HADOOP-8697. TestWritableName fails intermittently with JDK7 (Trevor Robinson via tgraves) HADOOP-8695. TestPathData fails intermittently with JDK7 (Trevor Robinson via tgraves) HADOOP-8611. Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails (Robert Parker via bobby) HADOOP-8225. DistCp fails when invoked by Oozie (daryn via bobby) HADOOP-8709. globStatus changed behavior from 0.20/1.x (Jason Lowe via bobby) HADOOP-8725. MR is broken when security is off (daryn via bobby) HADOOP-8726. The Secrets in Credentials are not available to MR tasks (daryn and Benoy Antony via bobby) HADOOP-8727. Gracefully deprecate dfs.umaskmode in 2.x onwards (Harsh J via bobby) Release 0.23.2 - UNRELEASED INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS HADOOP-8048. Allow merging of Credentials (Daryn Sharp via tgraves) HADOOP-8032. mvn site:stage-deploy should be able to use the scp protocol to stage documents (Ravi Prakash via tgraves) HADOOP-7923. Automate the updating of version numbers in the doc system. (szetszwo) HADOOP-8137. Added links to CLI manuals to the site. (tgraves via acmurthy) OPTIMIZATIONS HADOOP-8071. Avoid an extra packet in client code when nagling is disabled. (todd) HADOOP-6502. Improve the performance of Configuration.getClassByName when the class is not found by caching negative results. (sharad, todd via todd) BUG FIXES HADOOP-7660. Maven generated .classpath doesnot includes "target/generated-test-source/java" as source directory. (Laxman via bobby) HADOOP-8042 When copying a file out of HDFS, modifying it, and uploading it back into HDFS, the put fails due to a CRC mismatch (Daryn Sharp via bobby) HADOOP-8035 Hadoop Maven site is inefficient and runs phases redundantly (abayer via tucu) HADOOP-8051 HttpFS documentation it is not wired to the generated site (tucu) HADOOP-8055. Hadoop tarball distribution lacks a core-site.xml (harsh) HADOOP-8052. Hadoop Metrics2 should emit Float.MAX_VALUE (instead of Double.MAX_VALUE) to avoid making Ganglia's gmetad core. (Varun Kapoor via mattf) HADOOP-8074. Small bug in hadoop error message for unknown commands. (Colin Patrick McCabe via eli) HADOOP-8082 add hadoop-client and hadoop-minicluster to the dependency-management section. (tucu) HADOOP-8066 The full docs build intermittently fails (abayer via tucu) HADOOP-8083 javadoc generation for some modules is not done under target/ (tucu) HADOOP-8036. TestViewFsTrash assumes the user's home directory is 2 levels deep. (Colin Patrick McCabe via eli) HADOOP-8046 Revert StaticMapping semantics to the existing ones, add DNS mapping diagnostics in progress (stevel) HADOOP-8057 hadoop-setup-conf.sh not working because of some extra spaces. (Vinayakumar B via stevel) HADOOP-7680 TestHardLink fails on Mac OS X, when gnu stat is in path. (Milind Bhandarkar via stevel) HADOOP-8050. Deadlock in metrics. (Kihwal Lee via mattf) HADOOP-8131. FsShell put doesn't correctly handle a non-existent dir (Daryn Sharp via bobby) HADOOP-8123. Use java.home rather than env.JAVA_HOME for java in the project. (Jonathan Eagles via acmurthy) HADOOP-8064. Remove unnecessary dependency on w3c.org in document processing (Khiwal Lee via bobby) HADOOP-8140. dfs -getmerge should process its argments better (Daryn Sharp via bobby) HADOOP-8164. Back slash as path separator is handled for Windows only. (Daryn Sharp via suresh) HADOOP-8173. FsShell needs to handle quoted metachars. (Daryn Sharp via szetszwo) HADOOP-8175. Add -p option to mkdir in FsShell. (Daryn Sharp via szetszwo) HADOOP-8176. Disambiguate the destination of FsShell copies (Daryn Sharp via bobby) HADOOP-8208. Disallow self failover. (eli) Release 0.23.1 - 2012-02-17 INCOMPATIBLE CHANGES NEW FEATURES HADOOP-7777 Implement a base class for DNSToSwitchMapping implementations that can offer extra topology information. (stevel) HADOOP-7657. Add support for LZ4 compression. (Binglin Chang via todd) HADOOP-7910. Add Configuration.getLongBytes to handle human readable byte size values. (Sho Shimauchi via harsh) IMPROVEMENTS HADOOP-7801. HADOOP_PREFIX cannot be overriden. (Bruno Mahé via tomwhite) HADOOP-7802. Hadoop scripts unconditionally source "$bin"/../libexec/hadoop-config.sh. (Bruno Mahé via tomwhite) HADOOP-7858. Drop some info logging to DEBUG level in IPC, metrics, and HTTP. (todd via eli) HADOOP-7424. Log an error if the topology script doesn't handle multiple args. (Uma Maheswara Rao G via eli) HADOOP-7804. Enable hadoop config generator to set configurations to enable short circuit read. (Arpit Gupta via jitendra) HADOOP-7877. Update balancer CLI usage documentation to include the new -policy option. (szetszwo) HADOOP-6840. Support non-recursive create() in FileSystem and SequenceFile.Writer. (jitendra and eli via eli) HADOOP-6886. LocalFileSystem Needs createNonRecursive API. (Nicolas Spiegelberg and eli via eli) HADOOP-7912. test-patch should run eclipse:eclipse to verify that it does not break again. (Robert Joseph Evans via tomwhite) HADOOP-7890. Redirect hadoop script's deprecation message to stderr. (Koji Knoguchi via mahadev) HADOOP-7504. Add the missing Ganglia31 opts to hadoop-metrics.properties as a comment. (harsh) HADOOP-7933. Add a getDelegationTokens api to FileSystem which checks for known tokens in the passed Credentials object. (sseth) HADOOP-7737. normalize hadoop-mapreduce & hadoop-dist dist/tar build with common/hdfs. (tucu) HADOOP-7743. Add Maven profile to create a full source tarball. (tucu) HADOOP-7758. Make GlobFilter class public. (tucu) HADOOP-7590. Mavenize streaming and MR examples. (tucu) HADOOP-7934. Normalize dependencies versions across all modules. (tucu) HADOOP-7348. Change 'addnl' in getmerge util to be a flag '-nl' instead. (XieXianshan via harsh) HADOOP-7975. Add LZ4 as an entry in the default codec list, missed by HADOOP-7657 (harsh) HADOOP-4515. Configuration#getBoolean must not be case sensitive. (Sho Shimauchi via harsh) HADOOP-6490. Use StringUtils over String#replace in Path#normalizePath. (Uma Maheswara Rao G via harsh) HADOOP-7574. Improve FSShell -stat, add user/group elements. (XieXianshan via harsh) HADOOP-7736. Remove duplicate Path#normalizePath call. (harsh) HADOOP-7919. Remove the unused hadoop.logfile.* properties from the core-default.xml file. (harsh) HADOOP-7939. Improve Hadoop subcomponent integration in Hadoop 0.23. (rvs via tucu) HADOOP-8002. SecurityUtil acquired token message should be a debug rather than info. (Arpit Gupta via mahadev) HADOOP-8009. Create hadoop-client and hadoop-minicluster artifacts for downstream projects. (tucu) HADOOP-7470. Move up to Jackson 1.8.8. (Enis Soztutar via szetszwo) HADOOP-8027. Visiting /jmx on the daemon web interfaces may print unnecessary error in logs. (atm) HADOOP-7792. Add verifyToken method to AbstractDelegationTokenSecretManager. (jitendra) OPTIMIZATIONS BUG FIXES HADOOP-7811. TestUserGroupInformation#testGetServerSideGroups test fails in chroot. (Jonathan Eagles via mahadev) HADOOP-7813. Fix test-patch to use proper numerical comparison when checking javadoc and findbugs warning counts. (Jonathan Eagles via tlipcon) HADOOP-7841. Run tests with non-secure random. (tlipcon) HADOOP-7851. Configuration.getClasses() never returns the default value. (Uma Maheswara Rao G via amarrk) HADOOP-7787. Make source tarball use conventional name. (Bruno Mahé via tomwhite) HADOOP-6614. RunJar should provide more diags when it can't create a temp file. (Jonathan Hsieh via eli) HADOOP-7859. TestViewFsHdfs.testgetFileLinkStatus is failing an assert. (eli) HADOOP-7864. Building mvn site with Maven < 3.0.2 causes OOM errors. (Andrew Bayer via eli) HADOOP-7854. UGI getCurrentUser is not synchronized. (Daryn Sharp via jitendra) HADOOP-7870. fix SequenceFile#createWriter with boolean createParent arg to respect createParent. (Jon Hsieh via eli) HADOOP-7898. Fix javadoc warnings in AuthenticationToken.java. (suresh) HADOOP-7878 Regression: HADOOP-7777 switch changes break HDFS tests when the isSingleSwitch() predicate is used. (stevel) HADOOP-7914. Remove the duplicated declaration of hadoop-hdfs test-jar in hadoop-project/pom.xml. (szetszwo) HADOOP-7837. no NullAppender in the log4j config. (eli) HADOOP-7948. Shell scripts created by hadoop-dist/pom.xml to build tar do not properly propagate failure. (cim_michajlomatijkiw via tucu) HADOOP-7949. Updated maxIdleTime default in the code to match core-default.xml (eli) HADOOP-7853. multiple javax security configurations cause conflicts. (daryn via tucu) HDFS-2614. hadoop dist tarball is missing hdfs headers. (tucu) HADOOP-7874. native libs should be under lib/native/ dir. (tucu) HADOOP-7887. KerberosAuthenticatorHandler is not setting KerberosName name rules from configuration. (tucu) HADOOP-7902. skipping name rules setting (if already set) should be done on UGI initialization only. (tucu) HADOOP-7810. move hadoop archive to core from tools. (tucu) HADOOP_7917. compilation of protobuf files fails in windows/cygwin. (tucu) HADOOP-7907. hadoop-tools JARs are not part of the distro. (tucu) HADOOP-7936. There's a Hoop README in the root dir of the tarball. (tucu) HADOOP-7963. Fix ViewFS to catch a null canonical service-name and pass tests TestViewFileSystem* (Siddharth Seth via vinodkv) HADOOP-7964. Deadlock in NetUtils and SecurityUtil class initialization. (Daryn Sharp via suresh) HADOOP-7974. TestViewFsTrash incorrectly determines the user's home directory. (harsh via eli) HADOOP-7971. Adding back job/pipes/queue commands to bin/hadoop for backward compatibility. (Prashath Sharma via acmurthy) HADOOP-7982. UserGroupInformation fails to login if thread's context classloader can't load HadoopLoginModule. (todd) HADOOP-7986. Adding config for MapReduce History Server protocol in hadoop-policy.xml for service level authorization. (Mahadev Konar via vinodkv) HADOOP-7981. Improve documentation for org.apache.hadoop.io.compress. Decompressor.getRemaining (Jonathan Eagles via mahadev) HADOOP-7997. SequenceFile.createWriter(...createParent...) no longer works on existing file. (Gregory Chanan via eli) HADOOP-7993. Hadoop ignores old-style config options for enabling compressed output. (Anupam Seth via mahadev) HADOOP-8000. fetchdt command not available in bin/hadoop. (Arpit Gupta via mahadev) HADOOP-7999. "hadoop archive" fails with ClassNotFoundException. (Jason Lowe via mahadev) HADOOP-8012. hadoop-daemon.sh and yarn-daemon.sh are trying to mkdir and chown log/pid dirs which can fail. (Roman Shaposhnik via eli) HADOOP-8013. ViewFileSystem does not honor setVerifyChecksum (Daryn Sharp via bobby) HADOOP-8054 NPE with FilterFileSystem (Daryn Sharp via bobby) Release 0.23.0 - 2011-11-01 INCOMPATIBLE CHANGES HADOOP-6904. Support method based RPC compatiblity. (hairong) HADOOP-6432. Add Statistics support in FileContext. (jitendra) HADOOP-7136. Remove failmon contrib component. (nigel) NEW FEATURES HADOOP-7324. Ganglia plugins for metrics v2. (Priyo Mustafi via llu) HADOOP-7342. Add an utility API in FileUtil for JDK File.list avoid NPEs on File.list() (Bharath Mundlapudi via mattf) HADOOP-7322. Adding a util method in FileUtil for directory listing, avoid NPEs on File.listFiles() (Bharath Mundlapudi via mattf) HADOOP-7023. Add listCorruptFileBlocks to Filesysem. (Patrick Kling via hairong) HADOOP-7096. Allow setting of end-of-record delimiter for TextInputFormat (Ahmed Radwan via todd) HADOOP-6994. Api to get delegation token in AbstractFileSystem. (jitendra) HADOOP-7171. Support UGI in FileContext API. (jitendra) HADOOP-7257 Client side mount tables (sanjay) HADOOP-6919. New metrics2 framework. (Luke Lu via acmurthy) HADOOP-6920. Metrics instrumentation to move new metrics2 framework. (Luke Lu via suresh) HADOOP-7214. Add Common functionality necessary to provide an equivalent of /usr/bin/groups for Hadoop. (Aaron T. Myers via todd) HADOOP-6832. Add an authentication plugin using a configurable static user for the web UI. (Owen O'Malley and Todd Lipcon via cdouglas) HADOOP-7144. Expose JMX metrics via JSON servlet. (Robert Joseph Evans via cdouglas) HADOOP-7379. Add the ability to serialize and deserialize protocol buffers in ObjectWritable. (todd) HADOOP-7206. Support Snappy compression. (Issei Yoshida and Alejandro Abdelnur via eli) HADOOP-7329. Add the capability of getting invividual attribute of a mbean using JMXProxyServlet. (tanping) HADOOP-7380. Add client failover functionality to o.a.h.io.(ipc|retry). (atm via eli) HADOOP-7460. Support pluggable trash policies. (Usman Masoon via suresh) HADOOP-6385. dfs should support -rmdir (was HDFS-639). (Daryn Sharp via mattf) HADOOP-7119. add Kerberos HTTP SPNEGO authentication support to Hadoop JT/NN/DN/TT web-consoles. (Alejandro Abdelnur via atm) IMPROVEMENTS HADOOP-7655. Provide a small validation script that smoke tests the installed cluster. (Arpit Gupta via mattf) HADOOP-7042. Updates to test-patch.sh to include failed test names and improve other messaging. (nigel) HADOOP-7001. Configuration changes can occur via the Reconfigurable interface. (Patrick Kling via dhruba) HADOOP-6764. Add number of reader threads and queue length as configuration parameters in RPC.getServer. (Dmytro Molkov via hairong) HADOOP-7049. TestReconfiguration should be junit v4. (Patrick Kling via eli) HADOOP-7054 Change NN LoadGenerator to use FileContext APIs (Sanjay Radia) HADOOP-7060. A more elegant FileSystem#listCorruptFileBlocks API. (Patrick Kling via hairong) HADOOP-7058. Expose number of bytes in FSOutputSummer buffer to implementatins. (Todd Lipcon via hairong) HADOOP-7061. unprecise javadoc for CompressionCodec. (Jingguo Yao via eli) HADOOP-7059. Remove "unused" warning in native code. (Noah Watkins via eli) HADOOP-6864. Provide a JNI-based implementation of ShellBasedUnixGroupsNetgroupMapping (implementation of GroupMappingServiceProvider) (Erik Seffl via boryas) HADOOP-7078. Improve javadocs for RawComparator interface. (Harsh J Chouraria via todd) HADOOP-6995. Allow wildcards to be used in ProxyUsers configurations. (todd) HADOOP-6376. Add a comment header to conf/slaves that specifies the file format. (Kay Kay via todd) HADOOP-7151. Document need for stable hashCode() in WritableComparable. (Dmitriy V. Ryaboy via todd) HADOOP-7112. Issue a warning when GenericOptionsParser libjars are not on local filesystem. (tomwhite) HADOOP-7114. FsShell should dump all exceptions at DEBUG level. (todd via tomwhite) HADOOP-7159. RPC server should log the client hostname when read exception happened. (Scott Chen via todd) HADOOP-7167. Allow using a file to exclude certain tests from build. (todd) HADOOP-7133. Batch the calls in DataStorage to FileUtil.createHardLink(). (Matt Foley via jghoman) HADOOP-7166. Add DaemonFactory to common. (Erik Steffl & jitendra) HADOOP-7175. Add isEnabled() to Trash. (Daryn Sharp via szetszwo) HADOOP-7180. Better support on CommandFormat on the API and exceptions. (Daryn Sharp via szetszwo) HADOOP-7202. Improve shell Command base class. (Daryn Sharp via szetszwo) HADOOP-7224. Add CommandFactory to shell. (Daryn Sharp via szetszwo) HADOOP-7014. Generalize CLITest structure and interfaces to facilitate upstream adoption (e.g. for web testing). (cos) HADOOP-7230. Move "fs -help" shell command tests from HDFS to COMMOM; see also HDFS-1844. (Daryn Sharp via szetszwo) HADOOP-7233. Refactor ls to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7235. Refactor the tail command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7179. Federation: Improve HDFS startup scripts. (Erik Steffl and Tanping Wang via suresh) HADOOP-7227. Remove protocol version check at proxy creation in Hadoop RPC. (jitendra) HADOOP-7236. Refactor the mkdir command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7250. Refactor the setrep command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7249. Refactor the chmod/chown/chgrp command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7251. Refactor the getmerge command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7265. Keep track of relative paths in PathData. (Daryn Sharp via szetszwo) HADOOP-7238. Refactor the cat and text commands to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7271. Standardize shell command error messages. (Daryn Sharp via szetszwo) HADOOP-7272. Remove unnecessary security related info logs. (suresh) HADOOP-7275. Refactor the stat command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7237. Refactor the touchz command to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7267. Refactor the rm/rmr/expunge commands to conform to new FsCommand class. (Daryn Sharp via szetszwo) HADOOP-7285. Refactor the test command to conform to new FsCommand class. (Daryn Sharp via todd) HADOOP-7289. In ivy.xml, test conf should not extend common conf. (Eric Yang via szetszwo) HADOOP-7291. Update Hudson job not to run test-contrib. (Nigel Daley via eli) HADOOP-7286. Refactor the du/dus/df commands to conform to new FsCommand class. (Daryn Sharp via todd) HADOOP-7301. FSDataInputStream should expose a getWrappedStream method. (Jonathan Hsieh via eli) HADOOP-7306. Start metrics system even if config files are missing (Luke Lu via todd) HADOOP-7302. webinterface.private.actions should be renamed and moved to the MapReduce project. (Ari Rabkin via todd) HADOOP-7329. Improve help message for "df" to include "-h" flag. (Xie Xianshan via todd) HADOOP-7320. Refactor the copy and move commands to conform to new FsCommand class. (Daryn Sharp via todd) HADOOP-7312. Update value of hadoop.common.configuration.version. (Harsh J Chouraria via todd) HADOOP-7337. Change PureJavaCrc32 annotations to public stable. (szetszwo) HADOOP-7331. Make hadoop-daemon.sh return exit code 1 if daemon processes did not get started. (Tanping Wang via todd) HADOOP-7316. Add public javadocs to FSDataInputStream and FSDataOutputStream. (eli) HADOOP-7323. Add capability to resolve compression codec based on codec name. (Alejandro Abdelnur via tomwhite) HADOOP-1886. Undocumented parameters in FilesSystem. (Frank Conrad via eli) HADOOP-7375. Add resolvePath method to FileContext. (Sanjay Radia via eli) HADOOP-7383. HDFS needs to export protobuf library dependency in pom. (todd via eli) HADOOP-7374. Don't add tools.jar to the classpath when running Hadoop. (eli) HADOOP-7106. Reorganize project SVN layout to "unsplit" the projects. (todd, nigel) HADOOP-6605. Add JAVA_HOME detection to hadoop-config. (eli) HADOOP-7384. Allow test-patch to be more flexible about patch format. (todd) HADOOP-6929. RPC should have a way to pass Security information other than protocol annotations. (sharad and omalley via mahadev) HADOOP-7385. Remove StringUtils.stringifyException(ie) in logger functions. (Bharath Mundlapudi via Tanping Wang). HADOOP-310. Additional constructor requested in BytesWritable. (Brock Noland via atm) HADOOP-7429. Add another IOUtils#copyBytes method. (eli) HADOOP-7451. Generalize StringUtils#join. (Chris Douglas via mattf) HADOOP-7449. Add Data(In,Out)putByteBuffer to work with ByteBuffer similar to Data(In,Out)putBuffer for byte[]. Merge from yahoo-merge branch, -r 1079163. Fix missing Apache license headers. (Chris Douglas via mattf) HADOOP-7361. Provide an option, -overwrite/-f, in put and copyFromLocal shell commands. (Uma Maheswara Rao G via szetszwo) HADOOP-7430. Improve error message when moving to trash fails due to quota issue. (Ravi Prakash via mattf) HADOOP-7444. Add Checksum API to verify and calculate checksums "in bulk" (todd) HADOOP-7443. Add CRC32C as another DataChecksum implementation (todd) HADOOP-7305. Eclipse project files are incomplete. (Niels Basjes via eli) HADOOP-7314. Add support for throwing UnknownHostException when a host doesn't resolve. (Jeffrey Naisbitt via jitendra) HADOOP-7465. A several tiny improvements for the LOG format. (Xie Xianshan via eli) HADOOP-7434. Display error when using "daemonlog -setlevel" with illegal level. (yanjinshuang via eli) HADOOP-7463. Adding a configuration parameter to SecurityInfo interface. (mahadev) HADOOP-7298. Add test utility for writing multi-threaded tests. (todd and Harsh J Chouraria via todd) HADOOP-7485. Add -h option to ls to list file sizes in human readable format. (XieXianshan via suresh) HADOOP-7378. Add -d option to ls to not expand directories. (Daryn Sharp via suresh) HADOOP-7474. Refactor ClientCache out of WritableRpcEngine. (jitendra) HADOOP-7491. hadoop command should respect HADOOP_OPTS when given a class name. (eli) HADOOP-7178. Add a parameter, useRawLocalFileSystem, to copyToLocalFile(..) in FileSystem. (Uma Maheswara Rao G via szetszwo) HADOOP-6671. Use maven for hadoop common builds. (Alejandro Abdelnur via tomwhite) HADOOP-7502. Make generated sources IDE friendly. (Alejandro Abdelnur via llu) HADOOP-7501. Publish Hadoop Common artifacts (post HADOOP-6671) to Apache SNAPSHOTs repo. (Alejandro Abdelnur via tomwhite) HADOOP-7525. Make arguments to test-patch optional. (tomwhite) HADOOP-7472. RPC client should deal with IP address change. (Kihwal Lee via suresh) HADOOP-7499. Add method for doing a sanity check on hostnames in NetUtils. (Jeffrey Naisbit via mahadev) HADOOP-6158. Move CyclicIteration to HDFS. (eli) HADOOP-7526. Add TestPath tests for URI conversion and reserved characters. (eli) HADOOP-7531. Add servlet util methods for handling paths in requests. (eli) HADOOP-7493. Add ShortWritable. (Uma Maheswara Rao G via szetszwo) HADOOP-7555. Add a eclipse-generated files to .gitignore. (atm) HADOOP-7264. Bump avro version to at least 1.4.1. (Alejandro Abdelnur via tomwhite) HADOOP-7498. Remove legacy TAR layout creation. (Alejandro Abdelnur via tomwhite) HADOOP-7496. Break Maven TAR & bintar profiles into just LAYOUT & TAR proper. (Alejandro Abdelnur via tomwhite) HADOOP-7561. Make test-patch only run tests for changed modules. (tomwhite) HADOOP-7547. Add generic type in WritableComparable subclasses. (Uma Maheswara Rao G via szetszwo) HADOOP-7579. Rename package names from alfredo to auth. (Alejandro Abdelnur via szetszwo) HADOOP-7594. Support HTTP REST in HttpServer. (szetszwo) HADOOP-7552. FileUtil#fullyDelete doesn't throw IOE but lists it in the throws clause. (eli) HADOOP-7580. Add a version of getLocalPathForWrite to LocalDirAllocator which doesn't create dirs. (Chris Douglas & Siddharth Seth via acmurthy) HADOOP-7507. Allow ganglia metrics to include the metrics system tags in the gmetric names. (Alejandro Abdelnur via todd) HADOOP-7612. Change test-patch to run tests for all nested modules. (tomwhite) HADOOP-7599. Script improvements to setup a secure Hadoop cluster (Eric Yang via ddas) HADOOP-7639. Enhance HttpServer to allow passing path-specs for filtering, so that servers like Yarn WebApp can get filtered the paths served by their own injected servlets. (Thomas Graves via vinodkv) HADOOP-7575. Enhanced LocalDirAllocator to support fully-qualified paths. (Jonathan Eagles via vinodkv) HADOOP-7469 Add a standard handler for socket connection problems which improves diagnostics (Uma Maheswara Rao G and stevel via stevel) HADOOP-7710. Added hadoop-setup-application.sh for creating application directory (Arpit Gupta via Eric Yang) HADOOP-7707. Added toggle for dfs.support.append, webhdfs and hadoop proxy user to setup config script. (Arpit Gupta via Eric Yang) HADOOP-7720. Added parameter for HBase user to setup config script. (Arpit Gupta via Eric Yang) HADOOP-7624. Set things up for a top level hadoop-tools module. (tucu) HADOOP-7627. Improve MetricsAsserts to give more understandable output on failure. (todd) HADOOP-7642. create hadoop-dist module where TAR stitching would happen. (Thomas White via tucu) HADOOP-7709. Running a set of methods in a Single Test Class. (Jonathan Eagles via mahadev) HADOOP-7705. Add a log4j back end that can push out JSON data, one per line. (stevel) HADOOP-7749. Add a NetUtils createSocketAddr call which provides more help in exception messages. (todd) HADOOP-7762. Common side of MR-2736. (eli) HADOOP-7668. Add a NetUtils method that can tell if an InetAddress belongs to local host. (suresh) HADOOP-7509. Improve exception message thrown when Authentication is required. (Ravi Prakash via suresh) HADOOP-7745. Fix wrong variable name in exception message introduced in HADOOP-7509. (Ravi Prakash via suresh) MAPREDUCE-2764. Fix renewal of dfs delegation tokens. (Owen via jitendra) HADOOP-7360. Preserve relative paths that do not contain globs in FsShell. (Daryn Sharp and Kihwal Lee via szetszwo) HADOOP-7771. FsShell -copyToLocal, -get, etc. commands throw NPE if the destination directory does not exist. (John George and Daryn Sharp via szetszwo) HADOOP-7782. Aggregate project javadocs. (tomwhite) HADOOP-7789. Improvements to site navigation. (acmurthy) OPTIMIZATIONS HADOOP-7333. Performance improvement in PureJavaCrc32. (Eric Caspole via todd) HADOOP-7445. Implement bulk checksum verification using efficient native code. (todd) HADOOP-7753. Support fadvise and sync_file_range in NativeIO. Add ReadaheadPool infrastructure for use in HDFS and MR. (todd) HADOOP-7446. Implement CRC32C native code using SSE4.2 instructions. (Kihwal Lee and todd via todd) HADOOP-7763. Add top-level navigation to APT docs. (tomwhite) HADOOP-7785. Add equals, hashcode, toString to DataChecksum (todd) BUG FIXES HADOOP-7740. Fixed security audit logger configuration. (Arpit Gupta via Eric Yang) HADOOP-7630. hadoop-metrics2.properties should have a property *.period set to a default value for metrics. (Eric Yang via mattf) HADOOP-7327. FileSystem.listStatus() throws NullPointerException instead of IOException upon access permission failure. (mattf) HADOOP-7015. RawLocalFileSystem#listStatus does not deal with a directory whose entries are changing (e.g. in a multi-thread or multi-process environment). (Sanjay Radia via eli) HADOOP-7045. TestDU fails on systems with local file systems with extended attributes. (eli) HADOOP-6939. Inconsistent lock ordering in AbstractDelegationTokenSecretManager. (Todd Lipcon via tomwhite) HADOOP-7129. Fix typo in method name getProtocolSigature (todd) HADOOP-7048. Wrong description of Block-Compressed SequenceFile Format in SequenceFile's javadoc. (Jingguo Yao via tomwhite) HADOOP-7153. MapWritable violates contract of Map interface for equals() and hashCode(). (Nicholas Telford via todd) HADOOP-6754. DefaultCodec.createOutputStream() leaks memory. (Aaron Kimball via tomwhite) HADOOP-7098. Tasktracker property not set in conf/hadoop-env.sh. (Bernd Fondermann via tomwhite) HADOOP-7131. Exceptions thrown by Text methods should include the causing exception. (Uma Maheswara Rao G via todd) HADOOP-6912. Guard against NPE when calling UGI.isLoginKeytabBased(). (Kan Zhang via jitendra) HADOOP-7204. remove local unused fs variable from CmdHandler and FsShellPermissions.changePermissions (boryas) HADOOP-7210. Chown command is not working from FSShell (Uma Maheswara Rao G via todd) HADOOP-7215. RPC clients must use network interface corresponding to the host in the client's kerberos principal key. (suresh) HADOOP-7019. Refactor build targets to enable faster cross project dev cycles. (Luke Lu via cos) HADOOP-7216. Add FsCommand.runAll() with deprecated annotation for the transition of Command base class improvement. (Daryn Sharp via szetszwo) HADOOP-7207. fs member of FSShell is not really needed (boryas) HADOOP-7223. FileContext createFlag combinations are not clearly defined. (suresh) HADOOP-7231. Fix synopsis for -count. (Daryn Sharp via eli). HADOOP-7261. Disable IPV6 for junit tests. (suresh) HADOOP-7268. FileContext.getLocalFSFileContext() behavior needs to be fixed w.r.t tokens. (jitendra) HADOOP-7290. Unit test failure in TestUserGroupInformation.testGetServerSideGroups. (Trevor Robison via eli) HADOOP-7292. Fix racy test case TestSinkQueue. (Luke Lu via todd) HADOOP-7282. ipc.Server.getRemoteIp() may return null. (John George via szetszwo) HADOOP-7208. Fix implementation of equals() and hashCode() in StandardSocketFactory. (Uma Maheswara Rao G via todd) HADOOP-7336. TestFileContextResolveAfs will fail with default test.build.data property. (jitendra) HADOOP-7284 Trash and shell's rm does not work for viewfs (Sanjay Radia) HADOOP-7341. Fix options parsing in CommandFormat (Daryn Sharp via todd) HADOOP-7353. Cleanup FsShell and prevent masking of RTE stack traces. (Daryn Sharp via todd) HADOOP-7356. RPM packages broke bin/hadoop script in developer environment. (Eric Yang via todd) HADOOP-7389. Use of TestingGroups by tests causes subsequent tests to fail. (atm via tomwhite) HADOOP-7377. Fix command name handling affecting DFSAdmin. (Daryn Sharp via mattf) HADOOP-7402. TestConfiguration doesn't clean up after itself. (atm via eli) HADOOP-7428. IPC connection is orphaned with null 'out' member. (todd via eli) HADOOP-7437. IOUtils.copybytes will suppress the stream closure exceptions. (Uma Maheswara Rao G via szetszwo) HADOOP-7090. Fix resource leaks in s3.INode, BloomMapFile, WritableUtils and CBZip2OutputStream. (Uma Maheswara Rao G via szetszwo) HADOOP-7440. HttpServer.getParameterValues throws NPE for missing parameters. (Uma Maheswara Rao G and todd via todd) HADOOP-7442. Docs in core-default.xml still reference deprecated config "topology.script.file.name" (atm) HADOOP-7419. new hadoop-config.sh doesn't manage classpath for HADOOP_CONF_DIR correctly. (Bing Zheng and todd via todd) HADOOP-7448. merge from yahoo-merge branch (via mattf): -r 1079157: Fix content type for /stacks servlet to be plain text (Luke Lu) -r 1079164: No need to escape plain text (Luke Lu) HADOOP-7471. The saveVersion.sh script sometimes fails to extract SVN URL. (Alejandro Abdelnur via eli) HADOOP-2081. Configuration getInt, getLong, and getFloat replace invalid numbers with the default value. (Harsh J via eli) HADOOP-7111. Several TFile tests failing when native libraries are present. (atm) HADOOP-7438. Fix deprecated warnings from hadoop-daemon.sh script. (Ravi Prakash via suresh) HADOOP-7468 hadoop-core JAR contains a log4j.properties file. (Jolly Chen) HADOOP-7508. Compiled nativelib is in wrong directory and it is not picked up by surefire setup. (Alejandro Abdelnur via tomwhite) HADOOP-7520. Fix to add distribution management info to hadoop-main (Alejandro Abdelnur via gkesavan) HADOOP-7515. test-patch reports the wrong number of javadoc warnings. (tomwhite) HADOOP-7523. Test org.apache.hadoop.fs.TestFilterFileSystem fails due to java.lang.NoSuchMethodException. (John Lee via tomwhite) HADOOP-7528. Maven build fails in Windows. (Alejandro Abdelnur via tomwhite) HADOOP-7533. Allow test-patch to be run from any subproject directory. (tomwhite) HADOOP-7512. Fix example mistake in WritableComparable javadocs. (Harsh J via eli) HADOOP-7357. hadoop.io.compress.TestCodec#main() should exit with non-zero exit code if test failed. (Philip Zeyliger via eli) HADOOP-6622. Token should not print the password in toString. (eli) HADOOP-7529. Fix lock cycles in metrics system. (llu) HADOOP-7545. Common -tests JAR should not include properties and configs. (todd) HADOOP-7536. Correct the dependency version regressions introduced in HADOOP-6671. (Alejandro Abdelnur via tomwhite) HADOOP-7566. MR tests are failing webapps/hdfs not found in CLASSPATH. (Alejandro Abdelnur via mahadev) HADOOP-7567. 'mvn eclipse:eclipse' fails for hadoop-alfredo (auth). (Alejandro Abdelnur via tomwhite) HADOOP-7563. Setup HADOOP_HDFS_HOME, HADOOP_MAPRED_HOME and classpath correction. (Eric Yang via acmurthy) HADOOP-7560. Change src layout to be heirarchical. (Alejandro Abdelnur via acmurthy) HADOOP-7576. Fix findbugs warnings and javac warnings in hadoop-auth. (szetszwo) HADOOP-7593. Fix AssertionError in TestHttpServer.testMaxThreads(). (Uma Maheswara Rao G via szetszwo) HADOOP-7598. Fix smart-apply-patch.sh to handle patching from a sub directory correctly. (Robert Evans via acmurthy) HADOOP-7328. When a serializer class is missing, return null, not throw an NPE. (Harsh J Chouraria via todd) HADOOP-7626. Bugfix for a config generator (Eric Yang via ddas) HADOOP-7629. Allow immutable FsPermission objects to be used as IPC parameters. (todd) HADOOP-7608. SnappyCodec check for Hadoop native lib is wrong (Alejandro Abdelnur via todd) HADOOP-7637. Fix to include FairScheduler configuration file in RPM. (Eric Yang via ddas) HADOOP-7633. Adds log4j.properties to the hadoop-conf dir on deploy (Eric Yang via ddas) HADOOP-7631. Fixes a config problem to do with running streaming jobs (Eric Yang via ddas) HADOOP-7662. Fixed logs servlet to use the pathspec '/*' instead of '/' for correct filtering. (Thomas Graves via vinodkv) HADOOP-7691. Fixed conflict uid for install packages. (Eric Yang) HADOOP-7603. Set hdfs, mapred uid, and hadoop uid to fixed numbers. (Eric Yang) HADOOP-7658. Fixed HADOOP_SECURE_DN_USER environment variable in hadoop-evn.sh (Eric Yang) HADOOP-7684. Added init.d script for jobhistory server and secondary namenode. (Eric Yang) HADOOP-7715. Removed unnecessary security logger configuration. (Eric Yang) HADOOP-7685. Improved directory ownership check function in hadoop-setup-conf.sh. (Eric Yang) HADOOP-7711. Fixed recursive sourcing of HADOOP_OPTS environment variables (Arpit Gupta via Eric Yang) HADOOP-7681. Fixed security and hdfs audit log4j properties (Arpit Gupta via Eric Yang) HADOOP-7708. Fixed hadoop-setup-conf.sh to handle config files consistently. (Eric Yang) HADOOP-7724. Fixed hadoop-setup-conf.sh to put proxy user in core-site.xml. (Arpit Gupta via Eric Yang) HADOOP-7755. Detect MapReduce PreCommit Trunk builds silently failing when running test-patch.sh. (Jonathan Eagles via tomwhite) HADOOP-7744. Ensure failed tests exit with proper error code. (Jonathan Eagles via acmurthy) HADOOP-7764. Allow HttpServer to set both ACL list and path spec filters. (Jonathan Eagles via acmurthy) HADOOP-7766. The auth to local mappings are not being respected, with webhdfs and security enabled. (jitendra) HADOOP-7721. Add log before login in KerberosAuthenticationHandler. (jitendra) HADOOP-7778. FindBugs warning in Token.getKind(). (tomwhite) HADOOP-7798. Add support gpg signatures for maven release artifacts. (cutting via acmurthy) HADOOP-7797. Fix top-level pom.xml to refer to correct staging maven repository. (omalley via acmurthy) HADOOP-7101. UserGroupInformation.getCurrentUser() fails when called from non-Hadoop JAAS context. (todd) Release 0.22.1 - Unreleased INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS OPTIMIZATIONS BUG FIXES HADOOP-7937. Forward port SequenceFile#syncFs and friends from Hadoop 1.x. (tomwhite) Release 0.22.0 - 2011-11-29 INCOMPATIBLE CHANGES HADOOP-7137. Remove hod contrib. (nigel via eli) NEW FEATURES HADOOP-6791. Refresh for proxy superuser config (common part for HDFS-1096) (boryas) HADOOP-6581. Add authenticated TokenIdentifiers to UGI so that they can be used for authorization (Kan Zhang and Jitendra Pandey via jghoman) HADOOP-6584. Provide Kerberized SSL encryption for webservices. (jghoman and Kan Zhang via jghoman) HADOOP-6853. Common component of HDFS-1045. (jghoman) HADOOP-6859 - Introduce additional statistics to FileSystem to track file system operations (suresh) HADOOP-6870. Add a new API getFiles to FileSystem and FileContext that lists all files under the input path or the subtree rooted at the input path if recursive is true. Block locations are returned together with each file's status. (hairong) HADOOP-6888. Add a new FileSystem API closeAllForUGI(..) for closing all file systems associated with a particular UGI. (Devaraj Das and Kan Zhang via szetszwo) HADOOP-6892. Common component of HDFS-1150 (Verify datanodes' identities to clients in secure clusters) (jghoman) HADOOP-6889. Make RPC to have an option to timeout. (hairong) HADOOP-6996. Allow CodecFactory to return a codec object given a codec' class name. (hairong) HADOOP-7013. Add boolean field isCorrupt to BlockLocation. (Patrick Kling via hairong) HADOOP-6978. Adds support for NativeIO using JNI. (Todd Lipcon, Devaraj Das & Owen O'Malley via ddas) HADOOP-7134. configure files that are generated as part of the released tarball need to have executable bit set. (Roman Shaposhnik via cos) IMPROVEMENTS HADOOP-6644. util.Shell getGROUPS_FOR_USER_COMMAND method name - should use common naming convention (boryas) HADOOP-6778. add isRunning() method to AbstractDelegationTokenSecretManager (for HDFS-1044) (boryas) HADOOP-6633. normalize property names for JT/NN kerberos principal names in configuration (boryas) HADOOP-6627. "Bad Connection to FS" message in FSShell should print message from the exception (boryas) HADOOP-6600. mechanism for authorization check for inter-server protocols. (boryas) HADOOP-6623. Add StringUtils.split for non-escaped single-character separator. (Todd Lipcon via tomwhite) HADOOP-6761. The Trash Emptier has the ability to run more frequently. (Dmytro Molkov via dhruba) HADOOP-6714. Resolve compressed files using CodecFactory in FsShell::text. (Patrick Angeles via cdouglas) HADOOP-6661. User document for UserGroupInformation.doAs. (Jitendra Pandey via jghoman) HADOOP-6674. Makes use of the SASL authentication options in the SASL RPC. (Jitendra Pandey via ddas) HADOOP-6526. Need mapping from long principal names to local OS user names. (boryas) HADOOP-6814. Adds an API in UserGroupInformation to get the real authentication method of a passed UGI. (Jitendra Pandey via ddas) HADOOP-6756. Documentation for common configuration keys. (Erik Steffl via shv) HADOOP-6835. Add support for concatenated gzip input. (Greg Roelofs via cdouglas) HADOOP-6845. Renames the TokenStorage class to Credentials. (Jitendra Pandey via ddas) HADOOP-6826. FileStatus needs unit tests. (Rodrigo Schmidt via Eli Collins) HADOOP-6905. add buildDTServiceName method to SecurityUtil (as part of MAPREDUCE-1718) (boryas) HADOOP-6632. Adds support for using different keytabs for different servers in a Hadoop cluster. In the earier implementation, all servers of a certain type (like TaskTracker), would have the same keytab and the same principal. Now the principal name is a pattern that has _HOST in it. (Kan Zhang & Jitendra Pandey via ddas) HADOOP-6861. Adds new non-static methods in Credentials to read and write token storage file. (Jitendra Pandey & Owen O'Malley via ddas) HADOOP-6877. Common part of HDFS-1178 (NameNode servlets should communicate with NameNode directrly). (Kan Zhang via jghoman) HADOOP-6475. Adding some javadoc to Server.RpcMetrics, UGI. (Jitendra Pandey and borya via jghoman) HADOOP-6656. Adds a thread in the UserGroupInformation to renew TGTs periodically. (Owen O'Malley and ddas via ddas) HADOOP-6890. Improve listFiles API introduced by HADOOP-6870. (hairong) HADOOP-6862. Adds api to add/remove user and group to AccessControlList (amareshwari) HADOOP-6911. doc update for DelegationTokenFetcher (boryas) HADOOP-6900. Make the iterator returned by FileSystem#listLocatedStatus to throw IOException rather than RuntimeException when there is an IO error fetching the next file. (hairong) HADOOP-6905. Better logging messages when a delegation token is invalid. (Kan Zhang via jghoman) HADOOP-6693. Add metrics to track kerberol login activity. (suresh) HADOOP-6803. Add native gzip read/write coverage to TestCodec. (Eli Collins via tomwhite) HADOOP-6950. Suggest that HADOOP_CLASSPATH should be preserved in hadoop-env.sh.template. (Philip Zeyliger via Eli Collins) HADOOP-6922. Make AccessControlList a writable and update documentation for Job ACLs. (Ravi Gummadi via vinodkv) HADOOP-6965. Introduces checks for whether the original tgt is valid in the reloginFromKeytab method. HADOOP-6856. Simplify constructors for SequenceFile, and MapFile. (omalley) HADOOP-6987. Use JUnit Rule to optionally fail test cases that run more than 10 seconds (jghoman) HADOOP-7005. Update test-patch.sh to remove callback to Hudson. (nigel) HADOOP-6985. Suggest that HADOOP_OPTS be preserved in hadoop-env.sh.template. (Ramkumar Vadali via cutting) HADOOP-7007. Update the hudson-test-patch ant target to work with the latest test-patch.sh script (gkesavan) HADOOP-7010. Typo in FileSystem.java. (Jingguo Yao via eli) HADOOP-7009. MD5Hash provides a public factory method that creates an instance of thread local MessageDigest. (hairong) HADOOP-7008. Enable test-patch.sh to have a configured number of acceptable findbugs and javadoc warnings. (nigel and gkesavan) HADOOP-6818. Provides a JNI implementation of group resolution. (ddas) HADOOP-6943. The GroupMappingServiceProvider interface should be public. (Aaron T. Myers via tomwhite) HADOOP-4675. Current Ganglia metrics implementation is incompatible with Ganglia 3.1. (Brian Bockelman via tomwhite) HADOOP-6977. Herriot daemon clients should vend statistics (cos) HADOOP-7024. Create a test method for adding file systems during tests. (Kan Zhang via jghoman) HADOOP-6903. Make AbstractFSileSystem methods and some FileContext methods to be public. (Sanjay Radia) HADOOP-7034. Add TestPath tests to cover dot, dot dot, and slash normalization. (eli) HADOOP-7032. Assert type constraints in the FileStatus constructor. (eli) HADOOP-6562. FileContextSymlinkBaseTest should use FileContextTestHelper. (eli) HADOOP-7028. ant eclipse does not include requisite ant.jar in the classpath. (Patrick Angeles via eli) HADOOP-6298. Add copyBytes to Text and BytesWritable. (omalley) HADOOP-6578. Configuration should trim whitespace around a lot of value types. (Michele Catasta via eli) HADOOP-6811. Remove EC2 bash scripts. They are replaced by Apache Whirr (incubating, http://incubator.apache.org/whirr). (tomwhite) HADOOP-7102. Remove "fs.ramfs.impl" field from core-deafult.xml (shv) HADOOP-7104. Remove unnecessary DNS reverse lookups from RPC layer (Kan Zhang via todd) HADOOP-6056. Use java.net.preferIPv4Stack to force IPv4. (Michele Catasta via shv) HADOOP-7110. Implement chmod with JNI. (todd) HADOOP-6812. Change documentation for correct placement of configuration variables: mapreduce.reduce.input.buffer.percent, mapreduce.task.io.sort.factor, mapreduce.task.io.sort.mb (Chris Douglas via shv) HADOOP-6436. Remove auto-generated native build files. (rvs via eli) HADOOP-6970. SecurityAuth.audit should be generated under /build. (boryas) HADOOP-7154. Should set MALLOC_ARENA_MAX in hadoop-env.sh (todd) HADOOP-7187. Fix socket leak in GangliaContext. (Uma Maheswara Rao G via szetszwo) HADOOP-7241. fix typo of command 'hadoop fs -help tail'. (Wei Yongjun via eli) HADOOP-7244. Documentation change for updated configuration keys. (tomwhite via eli) HADOOP-7189. Add ability to enable 'debug' property in JAAS configuration. (Ted Yu via todd) HADOOP-7192. Update fs -stat docs to reflect the format features. (Harsh J Chouraria via todd) HADOOP-7355 Add audience and stability annotations to HttpServer class (stack) HADOOP-7346. Send back nicer error message to clients using outdated IPC version. (todd) HADOOP-7335. Force entropy to come from non-true random for tests. (todd via eli) HADOOP-7325. The hadoop command should not accept class names starting with a hyphen. (Brock Noland via todd) HADOOP-7772. javadoc the topology classes (stevel) HADOOP-7786. Remove HDFS-specific config keys defined in FsConfig. (eli) HADOOP-7861. changes2html.pl generates links to HADOOP, HDFS, and MAPREDUCE jiras. (shv) OPTIMIZATIONS HADOOP-6884. Add LOG.isDebugEnabled() guard for each LOG.debug(..). (Erik Steffl via szetszwo) HADOOP-6683. ZlibCompressor does not fully utilize the buffer. (Kang Xiao via eli) HADOOP-6949. Reduce RPC packet size of primitive arrays using ArrayPrimitiveWritable instead of ObjectWritable. (Matt Foley via suresh) BUG FIXES HADOOP-6638. try to relogin in a case of failed RPC connection (expired tgt) only in case the subject is loginUser or proxyUgi.realUser. (boryas) HADOOP-6781. security audit log shouldn't have exception in it. (boryas) HADOOP-6612. Protocols RefreshUserToGroupMappingsProtocol and RefreshAuthorizationPolicyProtocol will fail with security enabled (boryas) HADOOP-6764. Remove verbose logging from the Groups class. (Boris Shkolnik) HADOOP-6730. Bug in FileContext#copy and provide base class for FileContext tests. (Ravi Phulari via jghoman) HADOOP-6669. Respect compression configuration when creating DefaultCodec instances. (Koji Noguchi via cdouglas) HADOOP-6747. TestNetUtils fails on Mac OS X. (Todd Lipcon via jghoman) HADOOP-6787. Factor out glob pattern code from FileContext and Filesystem. Also fix bugs identified in HADOOP-6618 and make the glob pattern code less restrictive and more POSIX standard compliant. (Luke Lu via eli) HADOOP-6649. login object in UGI should be inside the subject (jnp via boryas) HADOOP-6687. user object in the subject in UGI should be reused in case of a relogin. (jnp via boryas) HADOOP-6603. Provide workaround for issue with Kerberos not resolving cross-realm principal (Kan Zhang and Jitendra Pandey via jghoman) HADOOP-6620. NPE if renewer is passed as null in getDelegationToken. (Jitendra Pandey via jghoman) HADOOP-6613. Moves the RPC version check ahead of the AuthMethod check. (Kan Zhang via ddas) HADOOP-6682. NetUtils:normalizeHostName does not process hostnames starting with [a-f] correctly. (jghoman) HADOOP-6652. Removes the unnecessary cache from ShellBasedUnixGroupsMapping. (ddas) HADOOP-6815. refreshSuperUserGroupsConfiguration should use server side configuration for the refresh (boryas) HADOOP-6648. Adds a check for null tokens in Credentials.addToken api. (ddas) HADOOP-6647. balancer fails with "is not authorized for protocol interface NamenodeProtocol" in secure environment (boryas) HADOOP-6834. TFile.append compares initial key against null lastKey (hong tang via mahadev) HADOOP-6670. Use the UserGroupInformation's Subject as the criteria for equals and hashCode. (Owen O'Malley and Kan Zhang via ddas) HADOOP-6536. Fixes FileUtil.fullyDelete() not to delete the contents of the sym-linked directory. (Ravi Gummadi via amareshwari) HADOOP-6873. using delegation token over hftp for long running clients (boryas) HADOOP-6706. Improves the sasl failure handling due to expired tickets, and other server detected failures. (Jitendra Pandey and ddas via ddas) HADOOP-6715. Fixes AccessControlList.toString() to return a descriptive String representation of the ACL. (Ravi Gummadi via amareshwari) HADOOP-6885. Fix java doc warnings in Groups and RefreshUserMappingsProtocol. (Eli Collins via jghoman) HADOOP-6482. GenericOptionsParser constructor that takes Options and String[] ignores options. (Eli Collins via jghoman) HADOOP-6906. FileContext copy() utility doesn't work with recursive copying of directories. (vinod k v via mahadev) HADOOP-6453. Hadoop wrapper script shouldn't ignore an existing JAVA_LIBRARY_PATH. (Chad Metcalf via jghoman) HADOOP-6932. Namenode start (init) fails because of invalid kerberos key, even when security set to "simple" (boryas) HADOOP-6913. Circular initialization between UserGroupInformation and KerberosName (Kan Zhang via boryas) HADOOP-6907. Rpc client doesn't use the per-connection conf to figure out server's Kerberos principal (Kan Zhang via hairong) HADOOP-6938. ConnectionId.getRemotePrincipal() should check if security is enabled. (Kan Zhang via hairong) HADOOP-6930. AvroRpcEngine doesn't work with generated Avro code. (sharad) HADOOP-6940. RawLocalFileSystem's markSupported method misnamed markSupport. (Tom White via eli). HADOOP-6951. Distinct minicluster services (e.g. NN and JT) overwrite each other's service policies. (Aaron T. Myers via tomwhite) HADOOP-6879. Provide SSH based (Jsch) remote execution API for system tests (cos) HADOOP-6989. Correct the parameter for SetFile to set the value type for SetFile to be NullWritable instead of the key. (cdouglas via omalley) HADOOP-6984. Combine the compress kind and the codec in the same option for SequenceFiles. (cdouglas via omalley) HADOOP-6933. TestListFiles is flaky. (Todd Lipcon via tomwhite) HADOOP-6947. Kerberos relogin should set refreshKrb5Config to true. (Todd Lipcon via tomwhite) HADOOP-7006. Fix 'fs -getmerge' command to not be a no-op. (Chris Nauroth via cutting) HADOOP-6663. BlockDecompressorStream get EOF exception when decompressing the file compressed from empty file. (Kang Xiao via tomwhite) HADOOP-6991. Fix SequenceFile::Reader to honor file lengths and call openFile (cdouglas via omalley) HADOOP-7011. Fix KerberosName.main() to not throw an NPE. (Aaron T. Myers via tomwhite) HADOOP-6975. Integer overflow in S3InputStream for blocks > 2GB. (Patrick Kling via tomwhite) HADOOP-6758. MapFile.fix does not allow index interval definition. (Gianmarco De Francisci Morales via tomwhite) HADOOP-6926. SocketInputStream incorrectly implements read(). (Todd Lipcon via tomwhite) HADOOP-6899 RawLocalFileSystem#setWorkingDir() does not work for relative names (Sanjay Radia) HADOOP-6496. HttpServer sends wrong content-type for CSS files (and others). (Todd Lipcon via tomwhite) HADOOP-7057. IOUtils.readFully and IOUtils.skipFully have typo in exception creation's message. (cos) HADOOP-7038. saveVersion script includes an additional \r while running whoami under windows. (Wang Xu via cos) HADOOP-7082. Configuration.writeXML should not hold lock while outputting (todd) HADOOP-7070. JAAS configuration should delegate unknown application names to pre-existing configuration. (todd) HADOOP-7087. SequenceFile.createWriter ignores FileSystem parameter (todd) HADOOP-7091. reloginFromKeytab() should happen even if TGT can't be found. (Kan Zhang via jghoman) HADOOP-7100. Fix build to not refer to contrib/ec2 removed by HADOOP-6811 (todd) HADOOP-7097. JAVA_LIBRARY_PATH missing base directory. (Noah Watkins via todd) HADOOP-7093. Servlets should default to text/plain (todd) HADOOP-7089. Fix link resolution logic in hadoop-config.sh. (eli) HADOOP-7046. Fix Findbugs warning in Configuration. (Po Cheung via shv) HADOOP-7118. Fix NPE in Configuration.writeXml (todd) HADOOP-7122. Fix thread leak when shell commands time out. (todd) HADOOP-7126. Fix file permission setting for RawLocalFileSystem on Windows. (Po Cheung via shv) HADOOP-6642. Fix javac, javadoc, findbugs warnings related to security work. (Chris Douglas, Po Cheung via shv) HADOOP-7140. IPC Reader threads do not stop when server stops (todd) HADOOP-7094. hadoop.css got lost during project split (cos) HADOOP-7145. Configuration.getLocalPath should trim whitespace from the provided directories. (todd) HADOOP-7156. Workaround for unsafe implementations of getpwuid_r (todd) HADOOP-6898. FileSystem.copyToLocal creates files with 777 permissions. (Aaron T. Myers via tomwhite) HADOOP-7229. Do not default to an absolute path for kinit in Kerberos auto-renewal thread. (Aaron T. Myers via todd) HADOOP-7172. SecureIO should not check owner on non-secure clusters that have no native support. (todd via eli) HADOOP-7184. Remove deprecated config local.cache.size from core-default.xml (todd) HADOOP-7245. FsConfig should use constants in CommonConfigurationKeys. (tomwhite via eli) HADOOP-7068. Ivy resolve force mode should be turned off by default. (Luke Lu via tomwhite) HADOOP-7296. The FsPermission(FsPermission) constructor does not use the sticky bit. (Siddharth Seth via tomwhite) HADOOP-7300. Configuration methods that return collections are inconsistent about mutability. (todd) HADOOP-7305. Eclipse project classpath should include tools.jar from JDK. (Niels Basjes via todd) HADOOP-7318. MD5Hash factory should reset the digester it returns. (todd via eli) HADOOP-7287. Configuration deprecation mechanism doesn't work properly for GenericOptionsParser and Tools. (Aaron T. Myers via todd) HADOOP-7146. RPC server leaks file descriptors (todd) HADOOP-7276. Hadoop native builds fail on ARM due to -m32 (Trevor Robinson via eli) HADOOP-7121. Exceptions while serializing IPC call responses are not handled well. (todd) HADOOP-7351 Regression: HttpServer#getWebAppsPath used to be protected so subclasses could supply alternate webapps path but it was made private by HADOOP-6461 (Stack) HADOOP-7349. HADOOP-7121 accidentally disabled some tests in TestIPC. (todd) HADOOP-7390. VersionInfo not generated properly in git after unsplit. (todd via atm) HADOOP-7568. SequenceFile should not print into stdout. (Plamen Jeliazkov via shv) HADOOP-7663. Fix TestHDFSTrash failure. (Mayank Bansal via shv) HADOOP-7457. Remove out-of-date Chinese language documentation. (Jakob Homan via eli) HADOOP-7783. Add more symlink tests that cover intermediate links. (eli) Release 0.21.1 - Unreleased IMPROVEMENTS HADOOP-6934. Test for ByteWritable comparator. (Johannes Zillmann via Eli Collins) HADOOP-6786. test-patch needs to verify Herriot integrity (cos) HADOOP-7177. CodecPool should report which compressor it is using. (Allen Wittenauer via eli) BUG FIXES HADOOP-6925. BZip2Codec incorrectly implements read(). (Todd Lipcon via Eli Collins) HADOOP-6833. IPC leaks call parameters when exceptions thrown. (Todd Lipcon via Eli Collins) HADOOP-6971. Clover build doesn't generate per-test coverage (cos) HADOOP-6993. Broken link on cluster setup page of docs. (eli) HADOOP-6944. [Herriot] Implement a functionality for getting proxy users definitions like groups and hosts. (Vinay Thota via cos) HADOOP-6954. Sources JARs are not correctly published to the Maven repository. (tomwhite) HADOOP-7052. misspelling of threshold in conf/log4j.properties. (Jingguo Yao via eli) HADOOP-7053. wrong FSNamesystem Audit logging setting in conf/log4j.properties. (Jingguo Yao via eli) HADOOP-7120. Fix a syntax error in test-patch.sh. (szetszwo) HADOOP-7162. Rmove a duplicated call FileSystem.listStatus(..) in FsShell. (Alexey Diomin via szetszwo) HADOOP-7117. Remove fs.checkpoint.* from core-default.xml and replace fs.checkpoint.* with dfs.namenode.checkpoint.* in documentations. (Harsh J Chouraria via szetszwo) HADOOP-7193. Correct the "fs -touchz" command help message. (Uma Maheswara Rao G via szetszwo) HADOOP-7174. Null is displayed in the "fs -copyToLocal" command. (Uma Maheswara Rao G via szetszwo) HADOOP-7194. Fix resource leak in IOUtils.copyBytes(..). (Devaraj K via szetszwo) HADOOP-7183. WritableComparator.get should not cache comparator objects. (tomwhite via eli) Release 0.21.0 - 2010-08-13 INCOMPATIBLE CHANGES HADOOP-4895. Remove deprecated methods DFSClient.getHints(..) and DFSClient.isDirectory(..). (szetszwo) HADOOP-4941. Remove deprecated FileSystem methods: getBlockSize(Path f), getLength(Path f) and getReplication(Path src). (szetszwo) HADOOP-4648. Remove obsolete, deprecated InMemoryFileSystem and ChecksumDistributedFileSystem. (cdouglas via szetszwo) HADOOP-4940. Remove a deprecated method FileSystem.delete(Path f). (Enis Soztutar via szetszwo) HADOOP-4010. Change semantics for LineRecordReader to read an additional line per split- rather than moving back one character in the stream- to work with splittable compression codecs. (Abdul Qadeer via cdouglas) HADOOP-5094. Show hostname and separate live/dead datanodes in DFSAdmin report. (Jakob Homan via szetszwo) HADOOP-4942. Remove deprecated FileSystem methods getName() and getNamed(String name, Configuration conf). (Jakob Homan via szetszwo) HADOOP-5486. Removes the CLASSPATH string from the command line and instead exports it in the environment. (Amareshwari Sriramadasu via ddas) HADOOP-2827. Remove deprecated NetUtils::getServerAddress. (cdouglas) HADOOP-5681. Change examples RandomWriter and RandomTextWriter to use new mapreduce API. (Amareshwari Sriramadasu via sharad) HADOOP-5680. Change org.apache.hadoop.examples.SleepJob to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5699. Change org.apache.hadoop.examples.PiEstimator to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5720. Introduces new task types - JOB_SETUP, JOB_CLEANUP and TASK_CLEANUP. Removes the isMap methods from TaskID/TaskAttemptID classes. (ddas) HADOOP-5668. Change TotalOrderPartitioner to use new API. (Amareshwari Sriramadasu via cdouglas) HADOOP-5738. Split "waiting_tasks" JobTracker metric into waiting maps and waiting reduces. (Sreekanth Ramakrishnan via cdouglas) HADOOP-5679. Resolve findbugs warnings in core/streaming/pipes/examples. (Jothi Padmanabhan via sharad) HADOOP-4359. Support for data access authorization checking on Datanodes. (Kan Zhang via rangadi) HADOOP-5690. Change org.apache.hadoop.examples.DBCountPageView to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5694. Change org.apache.hadoop.examples.dancing to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5696. Change org.apache.hadoop.examples.Sort to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5698. Change org.apache.hadoop.examples.MultiFileWordCount to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5913. Provide ability to an administrator to stop and start job queues. (Rahul Kumar Singh and Hemanth Yamijala via yhemanth) MAPREDUCE-711. Removed Distributed Cache from Common, to move it under Map/Reduce. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-6201. Change FileSystem::listStatus contract to throw FileNotFoundException if the directory does not exist, rather than letting this be implementation-specific. (Jakob Homan via cdouglas) HADOOP-6230. Moved process tree and memory calculator related classes from Common to Map/Reduce. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-6203. FsShell rm/rmr error message indicates exceeding Trash quota and suggests using -skpTrash, when moving to trash fails. (Boris Shkolnik via suresh) HADOOP-6303. Eclipse .classpath template has outdated jar files and is missing some new ones. (cos) HADOOP-6396. Fix uninformative exception message when unable to parse umask. (jghoman) HADOOP-6299. Reimplement the UserGroupInformation to use the OS specific and Kerberos JAAS login. (omalley) HADOOP-6686. Remove redundant exception class name from the exception message for the exceptions thrown at RPC client. (suresh) HADOOP-6701. Fix incorrect exit codes returned from chmod, chown and chgrp commands from FsShell. (Ravi Phulari via suresh) NEW FEATURES HADOOP-6332. Large-scale Automated Test Framework. (sharad, Sreekanth Ramakrishnan, at all via cos) HADOOP-4268. Change fsck to use ClientProtocol methods so that the corresponding permission requirement for running the ClientProtocol methods will be enforced. (szetszwo) HADOOP-3953. Implement sticky bit for directories in HDFS. (Jakob Homan via szetszwo) HADOOP-4368. Implement df in FsShell to show the status of a FileSystem. (Craig Macdonald via szetszwo) HADOOP-3741. Add a web ui to the SecondaryNameNode for showing its status. (szetszwo) HADOOP-5018. Add pipelined writers to Chukwa. (Ari Rabkin via cdouglas) HADOOP-5052. Add an example computing exact digits of pi using the Bailey-Borwein-Plouffe algorithm. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-4927. Adds a generic wrapper around outputformat to allow creation of output on demand (Jothi Padmanabhan via ddas) HADOOP-5144. Add a new DFSAdmin command for changing the setting of restore failed storage replicas in namenode. (Boris Shkolnik via szetszwo) HADOOP-5258. Add a new DFSAdmin command to print a tree of the rack and datanode topology as seen by the namenode. (Jakob Homan via szetszwo) HADOOP-4756. A command line tool to access JMX properties on NameNode and DataNode. (Boris Shkolnik via rangadi) HADOOP-4539. Introduce backup node and checkpoint node. (shv) HADOOP-5363. Add support for proxying connections to multiple clusters with different versions to hdfsproxy. (Zhiyong Zhang via cdouglas) HADOOP-5528. Add a configurable hash partitioner operating on ranges of BinaryComparable keys. (Klaas Bosteels via shv) HADOOP-5257. HDFS servers may start and stop external components through a plugin interface. (Carlos Valiente via dhruba) HADOOP-5450. Add application-specific data types to streaming's typed bytes interface. (Klaas Bosteels via omalley) HADOOP-5518. Add contrib/mrunit, a MapReduce unit test framework. (Aaron Kimball via cutting) HADOOP-5469. Add /metrics servlet to daemons, providing metrics over HTTP as either text or JSON. (Philip Zeyliger via cutting) HADOOP-5467. Introduce offline fsimage image viewer. (Jakob Homan via shv) HADOOP-5752. Add a new hdfs image processor, Delimited, to oiv. (Jakob Homan via szetszwo) HADOOP-5266. Adds the capability to do mark/reset of the reduce values iterator in the Context object API. (Jothi Padmanabhan via ddas) HADOOP-5745. Allow setting the default value of maxRunningJobs for all pools. (dhruba via matei) HADOOP-5643. Adds a way to decommission TaskTrackers while the JobTracker is running. (Amar Kamat via ddas) HADOOP-4829. Allow FileSystem shutdown hook to be disabled. (Todd Lipcon via tomwhite) HADOOP-5815. Sqoop: A database import tool for Hadoop. (Aaron Kimball via tomwhite) HADOOP-4861. Add disk usage with human-readable size (-duh). (Todd Lipcon via tomwhite) HADOOP-5844. Use mysqldump when connecting to local mysql instance in Sqoop. (Aaron Kimball via tomwhite) HADOOP-5976. Add a new command, classpath, to the hadoop script. (Owen O'Malley and Gary Murry via szetszwo) HADOOP-6120. Add support for Avro specific and reflect data. (sharad via cutting) HADOOP-6226. Moves BoundedByteArrayOutputStream from the tfile package to the io package and makes it available to other users (MAPREDUCE-318). (Jothi Padmanabhan via ddas) HADOOP-6105. Adds support for automatically handling deprecation of configuration keys. (V.V.Chaitanya Krishna via yhemanth) HADOOP-6235. Adds new method to FileSystem for clients to get server defaults. (Kan Zhang via suresh) HADOOP-6234. Add new option dfs.umaskmode to set umask in configuration to use octal or symbolic instead of decimal. (Jakob Homan via suresh) HADOOP-5073. Add annotation mechanism for interface classification. (Jakob Homan via suresh) HADOOP-4012. Provide splitting support for bzip2 compressed files. (Abdul Qadeer via cdouglas) HADOOP-6246. Add backward compatibility support to use deprecated decimal umask from old configuration. (Jakob Homan via suresh) HADOOP-4952. Add new improved file system interface FileContext for the application writer (Sanjay Radia via suresh) HADOOP-6170. Add facility to tunnel Avro RPCs through Hadoop RPCs. This permits one to take advantage of both Avro's RPC versioning features and Hadoop's proven RPC scalability. (cutting) HADOOP-6267. Permit building contrib modules located in external source trees. (Todd Lipcon via cutting) HADOOP-6240. Add new FileContext rename operation that posix compliant that allows overwriting existing destination. (suresh) HADOOP-6204. Implementing aspects development and fault injeciton framework for Hadoop (cos) HADOOP-6313. Implement Syncable interface in FSDataOutputStream to expose flush APIs to application users. (Hairong Kuang via suresh) HADOOP-6284. Add a new parameter, HADOOP_JAVA_PLATFORM_OPTS, to hadoop-config.sh so that it allows setting java command options for JAVA_PLATFORM. (Koji Noguchi via szetszwo) HADOOP-6337. Updates FilterInitializer class to be more visible, and the init of the class is made to take a Configuration argument. (Jakob Homan via ddas) Hadoop-6223. Add new file system interface AbstractFileSystem with implementation of some file systems that delegate to old FileSystem. (Sanjay Radia via suresh) HADOOP-6433. Introduce asychronous deletion of files via a pool of threads. This can be used to delete files in the Distributed Cache. (Zheng Shao via dhruba) HADOOP-6415. Adds a common token interface for both job token and delegation token. (Kan Zhang via ddas) HADOOP-6408. Add a /conf servlet to dump running configuration. (Todd Lipcon via tomwhite) HADOOP-6520. Adds APIs to read/write Token and secret keys. Also adds the automatic loading of tokens into UserGroupInformation upon login. The tokens are read from a file specified in the environment variable. (ddas) HADOOP-6419. Adds SASL based authentication to RPC. (Kan Zhang via ddas) HADOOP-6510. Adds a way for superusers to impersonate other users in a secure environment. (Jitendra Nath Pandey via ddas) HADOOP-6421. Adds Symbolic links to FileContext, AbstractFileSystem. It also adds a limited implementation for the local file system (RawLocalFs) that allows local symlinks. (Eli Collins via Sanjay Radia) HADOOP-6577. Add hidden configuration option "ipc.server.max.response.size" to change the default 1 MB, the maximum size when large IPC handler response buffer is reset. (suresh) HADOOP-6568. Adds authorization for the default servlets. (Vinod Kumar Vavilapalli via ddas) HADOOP-6586. Log authentication and authorization failures and successes for RPC (boryas) HADOOP-6580. UGI should contain authentication method. (jnp via boryas) HADOOP-6657. Add a capitalization method to StringUtils for MAPREDUCE-1545. (Luke Lu via Steve Loughran) HADOOP-6692. Add FileContext#listStatus that returns an iterator. (hairong) HADOOP-6869. Functionality to create file or folder on a remote daemon side (Vinay Thota via cos) IMPROVEMENTS HADOOP-6798. Align Ivy version for all Hadoop subprojects. (cos) HADOOP-6777. Implement a functionality for suspend and resume a process. (Vinay Thota via cos) HADOOP-6772. Utilities for system tests specific. (Vinay Thota via cos) HADOOP-6771. Herriot's artifact id for Maven deployment should be set to hadoop-core-instrumented (cos) HADOOP-6752. Remote cluster control functionality needs JavaDocs improvement (Balaji Rajagopalan via cos). HADOOP-4565. Added CombineFileInputFormat to use data locality information to create splits. (dhruba via zshao) HADOOP-4936. Improvements to TestSafeMode. (shv) HADOOP-4985. Remove unnecessary "throw IOException" declarations in FSDirectory related methods. (szetszwo) HADOOP-5017. Change NameNode.namesystem declaration to private. (szetszwo) HADOOP-4794. Add branch information from the source version control into the version information that is compiled into Hadoop. (cdouglas via omalley) HADOOP-5070. Increment copyright year to 2009, remove assertions of ASF copyright to licensed files. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-5037. Deprecate static FSNamesystem.getFSNamesystem(). (szetszwo) HADOOP-5088. Include releaseaudit target as part of developer test-patch target. (Giridharan Kesavan via nigel) HADOOP-2721. Uses setsid when creating new tasks so that subprocesses of this process will be within this new session (and this process will be the process leader for all the subprocesses). Killing the process leader, or the main Java task in Hadoop's case, kills the entire subtree of processes. (Ravi Gummadi via ddas) HADOOP-5097. Remove static variable JspHelper.fsn, a static reference to a non-singleton FSNamesystem object. (szetszwo) HADOOP-3327. Improves handling of READ_TIMEOUT during map output copying. (Amareshwari Sriramadasu via ddas) HADOOP-5124. Choose datanodes randomly instead of starting from the first datanode for providing fairness. (hairong via szetszwo) HADOOP-4930. Implement a Linux native executable that can be used to launch tasks as users. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5122. Fix format of fs.default.name value in libhdfs test conf. (Craig Macdonald via tomwhite) HADOOP-5038. Direct daemon trace to debug log instead of stdout. (Jerome Boulon via cdouglas) HADOOP-5101. Improve packaging by adding 'all-jars' target building core, tools, and example jars. Let findbugs depend on this rather than the 'tar' target. (Giridharan Kesavan via cdouglas) HADOOP-4868. Splits the hadoop script into three parts - bin/hadoop, bin/mapred and bin/hdfs. (Sharad Agarwal via ddas) HADOOP-1722. Adds support for TypedBytes and RawBytes in Streaming. (Klaas Bosteels via ddas) HADOOP-4220. Changes the JobTracker restart tests so that they take much less time. (Amar Kamat via ddas) HADOOP-4885. Try to restore failed name-node storage directories at checkpoint time. (Boris Shkolnik via shv) HADOOP-5209. Update year to 2009 for javadoc. (szetszwo) HADOOP-5279. Remove unnecessary targets from test-patch.sh. (Giridharan Kesavan via nigel) HADOOP-5120. Remove the use of FSNamesystem.getFSNamesystem() from UpgradeManagerNamenode and UpgradeObjectNamenode. (szetszwo) HADOOP-5222. Add offset to datanode clienttrace. (Lei Xu via cdouglas) HADOOP-5240. Skip re-building javadoc when it is already up-to-date. (Aaron Kimball via cutting) HADOOP-5042. Add a cleanup stage to log rollover in Chukwa appender. (Jerome Boulon via cdouglas) HADOOP-5264. Removes redundant configuration object from the TaskTracker. (Sharad Agarwal via ddas) HADOOP-5232. Enable patch testing to occur on more than one host. (Giri Kesavan via nigel) HADOOP-4546. Fix DF reporting for AIX. (Bill Habermaas via cdouglas) HADOOP-5023. Add Tomcat support to HdfsProxy. (Zhiyong Zhang via cdouglas) HADOOP-5317. Provide documentation for LazyOutput Feature. (Jothi Padmanabhan via johan) HADOOP-5455. Document rpc metrics context to the extent dfs, mapred, and jvm contexts are documented. (Philip Zeyliger via cdouglas) HADOOP-5358. Provide scripting functionality to the synthetic load generator. (Jakob Homan via hairong) HADOOP-5442. Paginate jobhistory display and added some search capabilities. (Amar Kamat via acmurthy) HADOOP-4842. Streaming now allows specifiying a command for the combiner. (Amareshwari Sriramadasu via ddas) HADOOP-5196. avoiding unnecessary byte[] allocation in SequenceFile.CompressedBytes and SequenceFile.UncompressedBytes. (hong tang via mahadev) HADOOP-4655. New method FileSystem.newInstance() that always returns a newly allocated FileSystem object. (dhruba) HADOOP-4788. Set Fair scheduler to assign both a map and a reduce on each heartbeat by default. (matei) HADOOP-5491. In contrib/index, better control memory usage. (Ning Li via cutting) HADOOP-5423. Include option of preserving file metadata in SequenceFile::sort. (Michael Tamm via cdouglas) HADOOP-5331. Add support for KFS appends. (Sriram Rao via cdouglas) HADOOP-4365. Make Configuration::getProps protected in support of meaningful subclassing. (Steve Loughran via cdouglas) HADOOP-2413. Remove the static variable FSNamesystem.fsNamesystemObject. (Konstantin Shvachko via szetszwo) HADOOP-4584. Improve datanode block reports and associated file system scan to avoid interefering with normal datanode operations. (Suresh Srinivas via rangadi) HADOOP-5502. Documentation for backup and checkpoint nodes. (Jakob Homan via shv) HADOOP-5485. Mask actions in the fair scheduler's servlet UI based on value of webinterface.private.actions. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-5581. HDFS should throw FileNotFoundException when while opening a file that does not exist. (Brian Bockelman via rangadi) HADOOP-5509. PendingReplicationBlocks does not start monitor in the constructor. (shv) HADOOP-5494. Modify sorted map output merger to lazily read values, rather than buffering at least one record for each segment. (Devaraj Das via cdouglas) HADOOP-5396. Provide ability to refresh queue ACLs in the JobTracker without having to restart the daemon. (Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth) HADOOP-4490. Provide ability to run tasks as job owners. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5697. Change org.apache.hadoop.examples.Grep to use new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5625. Add operation duration to clienttrace. (Lei Xu via cdouglas) HADOOP-5705. Improve TotalOrderPartitioner efficiency by updating the trie construction. (Dick King via cdouglas) HADOOP-5589. Eliminate source limit of 64 for map-side joins imposed by TupleWritable encoding. (Jingkei Ly via cdouglas) HADOOP-5734. Correct block placement policy description in HDFS Design document. (Konstantin Boudnik via shv) HADOOP-5657. Validate data in TestReduceFetch to improve merge test coverage. (cdouglas) HADOOP-5613. Change S3Exception to checked exception. (Andrew Hitchcock via tomwhite) HADOOP-5717. Create public enum class for the Framework counters in org.apache.hadoop.mapreduce. (Amareshwari Sriramadasu via sharad) HADOOP-5217. Split AllTestDriver for core, hdfs and mapred. (sharad) HADOOP-5364. Add certificate expiration warning to HsftpFileSystem and HDFS proxy. (Zhiyong Zhang via cdouglas) HADOOP-5733. Add map/reduce slot capacity and blacklisted capacity to JobTracker metrics. (Sreekanth Ramakrishnan via cdouglas) HADOOP-5596. Add EnumSetWritable. (He Yongqiang via szetszwo) HADOOP-5727. Simplify hashcode for ID types. (Shevek via cdouglas) HADOOP-5500. In DBOutputFormat, where field names are absent permit the number of fields to be sufficient to construct the select query. (Enis Soztutar via cdouglas) HADOOP-5081. Split TestCLI into HDFS, Mapred and Core tests. (sharad) HADOOP-5015. Separate block management code from FSNamesystem. (Suresh Srinivas via szetszwo) HADOOP-5080. Add new test cases to TestMRCLI and TestHDFSCLI (V.Karthikeyan via nigel) HADOOP-5135. Splits the tests into different directories based on the package. Four new test targets have been defined - run-test-core, run-test-mapred, run-test-hdfs and run-test-hdfs-with-mr. (Sharad Agarwal via ddas) HADOOP-5771. Implements unit tests for LinuxTaskController. (Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth) HADOOP-5419. Provide a facility to query the Queue ACLs for the current user. (Rahul Kumar Singh via yhemanth) HADOOP-5780. Improve per block message prited by "-metaSave" in HDFS. (Raghu Angadi) HADOOP-5823. Added a new class DeprecatedUTF8 to help with removing UTF8 related javac warnings. These warnings are removed in FSEditLog.java as a use case. (Raghu Angadi) HADOOP-5824. Deprecate DataTransferProtocol.OP_READ_METADATA and remove the corresponding unused codes. (Kan Zhang via szetszwo) HADOOP-5721. Factor out EditLogFileInputStream and EditLogFileOutputStream into independent classes. (Luca Telloli & Flavio Junqueira via shv) HADOOP-5838. Fix a few javac warnings in HDFS. (Raghu Angadi) HADOOP-5854. Fix a few "Inconsistent Synchronization" warnings in HDFS. (Raghu Angadi) HADOOP-5369. Small tweaks to reduce MapFile index size. (Ben Maurer via sharad) HADOOP-5858. Eliminate UTF8 and fix warnings in test/hdfs-with-mr package. (shv) HADOOP-5866. Move DeprecatedUTF8 from o.a.h.io to o.a.h.hdfs since it may not be used outside hdfs. (Raghu Angadi) HADOOP-5857. Move normal java methods from hdfs .jsp files to .java files. (szetszwo) HADOOP-5873. Remove deprecated methods randomDataNode() and getDatanodeByIndex(..) in FSNamesystem. (szetszwo) HADOOP-5572. Improves the progress reporting for the sort phase for both maps and reduces. (Ravi Gummadi via ddas) HADOOP-5839. Fix EC2 scripts to allow remote job submission. (Joydeep Sen Sarma via tomwhite) HADOOP-5877. Fix javac warnings in TestHDFSServerPorts, TestCheckpoint, TestNameEditsConfig, TestStartup and TestStorageRestore. (Jakob Homan via shv) HADOOP-5438. Provide a single FileSystem method to create or open-for-append to a file. (He Yongqiang via dhruba) HADOOP-5472. Change DistCp to support globbing of input paths. (Dhruba Borthakur and Rodrigo Schmidt via szetszwo) HADOOP-5175. Don't unpack libjars on classpath. (Todd Lipcon via tomwhite) HADOOP-5620. Add an option to DistCp for preserving modification and access times. (Rodrigo Schmidt via szetszwo) HADOOP-5664. Change map serialization so a lock is obtained only where contention is possible, rather than for each write. (cdouglas) HADOOP-5896. Remove the dependency of GenericOptionsParser on Option.withArgPattern. (Giridharan Kesavan and Sharad Agarwal via sharad) HADOOP-5784. Makes the number of heartbeats that should arrive a second at the JobTracker configurable. (Amareshwari Sriramadasu via ddas) HADOOP-5955. Changes TestFileOuputFormat so that is uses LOCAL_MR instead of CLUSTER_MR. (Jothi Padmanabhan via das) HADOOP-5948. Changes TestJavaSerialization to use LocalJobRunner instead of MiniMR/DFS cluster. (Jothi Padmanabhan via das) HADOOP-2838. Add mapred.child.env to pass environment variables to tasktracker's child processes. (Amar Kamat via sharad) HADOOP-5961. DataNode process understand generic hadoop command line options (like -Ddfs.property=value). (Raghu Angadi) HADOOP-5938. Change org.apache.hadoop.mapred.jobcontrol to use new api. (Amareshwari Sriramadasu via sharad) HADOOP-2141. Improves the speculative execution heuristic. The heuristic is currently based on the progress-rates of tasks and the expected time to complete. Also, statistics about trackers are collected, and speculative tasks are not given to the ones deduced to be slow. (Andy Konwinski and ddas) HADOOP-5952. Change "-1 tests included" wording in test-patch.sh. (Gary Murry via szetszwo) HADOOP-6106. Provides an option in ShellCommandExecutor to timeout commands that do not complete within a certain amount of time. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5925. EC2 scripts should exit on error. (tomwhite) HADOOP-6109. Change Text to grow its internal buffer exponentially, rather than the max of the current length and the proposed length to improve performance reading large values. (thushara wijeratna via cdouglas) HADOOP-2366. Support trimmed strings in Configuration. (Michele Catasta via szetszwo) HADOOP-6099. The RPC module can be configured to not send period pings. The default behaviour of sending periodic pings remain unchanged. (dhruba) HADOOP-6142. Update documentation and use of harchives for relative paths added in MAPREDUCE-739. (Mahadev Konar via cdouglas) HADOOP-6148. Implement a fast, pure Java CRC32 calculator which outperforms java.util.zip.CRC32. (Todd Lipcon and Scott Carey via szetszwo) HADOOP-6146. Upgrade to JetS3t version 0.7.1. (tomwhite) HADOOP-6161. Add get/setEnum methods to Configuration. (cdouglas) HADOOP-6160. Fix releaseaudit target to run on specific directories. (gkesavan) HADOOP-6169. Removing deprecated method calls in TFile. (hong tang via mahadev) HADOOP-6176. Add a couple package private methods to AccessTokenHandler for testing. (Kan Zhang via szetszwo) HADOOP-6182. Fix ReleaseAudit warnings (Giridharan Kesavan and Lee Tucker via gkesavan) HADOOP-6173. Change src/native/packageNativeHadoop.sh to package all native library files. (Hong Tang via szetszwo) HADOOP-6184. Provide an API to dump Configuration in a JSON format. (V.V.Chaitanya Krishna via yhemanth) HADOOP-6224. Add a method to WritableUtils performing a bounded read of an encoded String. (Jothi Padmanabhan via cdouglas) HADOOP-6133. Add a caching layer to Configuration::getClassByName to alleviate a performance regression introduced in a compatibility layer. (Todd Lipcon via cdouglas) HADOOP-6252. Provide a method to determine if a deprecated key is set in config file. (Jakob Homan via suresh) HADOOP-5879. Read compression level and strategy from Configuration for gzip compression. (He Yongqiang via cdouglas) HADOOP-6216. Support comments in host files. (Ravi Phulari and Dmytro Molkov via szetszwo) HADOOP-6217. Update documentation for project split. (Corinne Chandel via omalley) HADOOP-6268. Add ivy jar to .gitignore. (Todd Lipcon via cdouglas) HADOOP-6270. Support deleteOnExit in FileContext. (Suresh Srinivas via szetszwo) HADOOP-6233. Rename configuration keys towards API standardization and backward compatibility. (Jithendra Pandey via suresh) HADOOP-6260. Add additional unit tests for FileContext util methods. (Gary Murry via suresh). HADOOP-6309. Change build.xml to run tests with java asserts. (Eli Collins via szetszwo) HADOOP-6326. Hundson runs should check for AspectJ warnings and report failure if any is present (cos) HADOOP-6329. Add build-fi directory to the ignore lists. (szetszwo) HADOOP-5107. Use Maven ant tasks to publish the subproject jars. (Giridharan Kesavan via omalley) HADOOP-6343. Log unexpected throwable object caught in RPC. (Jitendra Nath Pandey via szetszwo) HADOOP-6367. Removes Access Token implementation from common. (Kan Zhang via ddas) HADOOP-6395. Upgrade some libraries to be consistent across common, hdfs, and mapreduce. (omalley) HADOOP-6398. Build is broken after HADOOP-6395 patch has been applied (cos) HADOOP-6413. Move TestReflectionUtils to Common. (Todd Lipcon via tomwhite) HADOOP-6283. Improve the exception messages thrown by FileUtil$HardLink.getLinkCount(..). (szetszwo) HADOOP-6279. Add Runtime::maxMemory to JVM metrics. (Todd Lipcon via cdouglas) HADOOP-6305. Unify build property names to facilitate cross-projects modifications (cos) HADOOP-6312. Remove unnecessary debug logging in Configuration constructor. (Aaron Kimball via cdouglas) HADOOP-6366. Reduce ivy console output to ovservable level (cos) HADOOP-6400. Log errors getting Unix UGI. (Todd Lipcon via tomwhite) HADOOP-6346. Add support for specifying unpack pattern regex to RunJar.unJar. (Todd Lipcon via tomwhite) HADOOP-6422. Make RPC backend plugable, protocol-by-protocol, to ease evolution towards Avro. (cutting) HADOOP-5958. Use JDK 1.6 File APIs in DF.java wherever possible. (Aaron Kimball via tomwhite) HADOOP-6222. Core doesn't have TestCommonCLI facility. (cos) HADOOP-6394. Add a helper class to simplify FileContext related tests and improve code reusability. (Jitendra Nath Pandey via suresh) HADOOP-4656. Add a user to groups mapping service. (boryas, acmurthy) HADOOP-6435. Make RPC.waitForProxy with timeout public. (Steve Loughran via tomwhite) HADOOP-6472. add tokenCache option to GenericOptionsParser for passing file with secret keys to a map reduce job. (boryas) HADOOP-3205. Read multiple chunks directly from FSInputChecker subclass into user buffers. (Todd Lipcon via tomwhite) HADOOP-6479. TestUTF8 assertions could fail with better text. (Steve Loughran via tomwhite) HADOOP-6155. Deprecate RecordIO anticipating Avro. (Tom White via cdouglas) HADOOP-6492. Make some Avro serialization APIs public. (Aaron Kimball via cutting) HADOOP-6497. Add an adapter for Avro's SeekableInput interface, so that Avro can read FileSystem data. (Aaron Kimball via cutting) HADOOP-6495. Identifier should be serialized after the password is created In Token constructor (jnp via boryas) HADOOP-6518. Makes the UGI honor the env var KRB5CCNAME. (Owen O'Malley via ddas) HADOOP-6531. Enhance FileUtil with an API to delete all contents of a directory. (Amareshwari Sriramadasu via yhemanth) HADOOP-6547. Move DelegationToken into Common, so that it can be used by MapReduce also. (devaraj via omalley) HADOOP-6552. Puts renewTGT=true and useTicketCache=true for the keytab kerberos options. (ddas) HADOOP-6534. Trim whitespace from directory lists initializing LocalDirAllocator. (Todd Lipcon via cdouglas) HADOOP-6559. Makes the RPC client automatically re-login when the SASL connection setup fails. This is applicable only to keytab based logins. (Devaraj Das) HADOOP-6551. Delegation token renewing and cancelling should provide meaningful exceptions when there are failures instead of returning false. (omalley) HADOOP-6583. Captures authentication and authorization metrics. (ddas) HADOOP-6543. Allows secure clients to talk to unsecure clusters. (Kan Zhang via ddas) HADOOP-6579. Provide a mechanism for encoding/decoding Tokens from a url-safe string and change the commons-code library to 1.4. (omalley) HADOOP-6596. Add a version field to the AbstractDelegationTokenIdentifier's serialized value. (omalley) HADOOP-6573. Support for persistent delegation tokens. (Jitendra Pandey via shv) HADOOP-6594. Provide a fetchdt tool via bin/hdfs. (jhoman via acmurthy) HADOOP-6589. Provide better error messages when RPC authentication fails. (Kan Zhang via omalley) HADOOP-6599 Split existing RpcMetrics into RpcMetrics & RpcDetailedMetrics. (Suresh Srinivas via Sanjay Radia) HADOOP-6537 Declare more detailed exceptions in FileContext and AbstractFileSystem (Suresh Srinivas via Sanjay Radia) HADOOP-6486. fix common classes to work with Avro 1.3 reflection. (cutting via tomwhite) HADOOP-6591. HarFileSystem can handle paths with the whitespace characters. (Rodrigo Schmidt via dhruba) HADOOP-6407. Have a way to automatically update Eclipse .classpath file when new libs are added to the classpath through Ivy. (tomwhite) HADOOP-3659. Patch to allow hadoop native to compile on Mac OS X. (Colin Evans and Allen Wittenauer via tomwhite) HADOOP-6471. StringBuffer -> StringBuilder - conversion of references as necessary. (Kay Kay via tomwhite) HADOOP-6646. Move HarfileSystem out of Hadoop Common. (mahadev) HADOOP-6566. Add methods supporting, enforcing narrower permissions on local daemon directories. (Arun Murthy and Luke Lu via cdouglas) HADOOP-6705. Fix to work with 1.5 version of jiracli (Giridharan Kesavan) HADOOP-6658. Exclude Private elements from generated Javadoc. (tomwhite) HADOOP-6635. Install/deploy source jars to Maven repo. (Patrick Angeles via jghoman) HADOOP-6717. Log levels in o.a.h.security.Groups too high (Todd Lipcon via jghoman) HADOOP-6667. RPC.waitForProxy should retry through NoRouteToHostException. (Todd Lipcon via tomwhite) HADOOP-6677. InterfaceAudience.LimitedPrivate should take a string not an enum. (tomwhite) HADOOP-678. Remove FileContext#isFile, isDirectory, and exists. (Eli Collins via hairong) HADOOP-6515. Make maximum number of http threads configurable. (Scott Chen via zshao) HADOOP-6563. Add more symlink tests to cover intermediate symlinks in paths. (Eli Collins via suresh) HADOOP-6585. Add FileStatus#isDirectory and isFile. (Eli Collins via tomwhite) HADOOP-6738. Move cluster_setup.xml from MapReduce to Common. (Tom White via tomwhite) HADOOP-6794. Move configuration and script files post split. (tomwhite) HADOOP-6403. Deprecate EC2 bash scripts. (tomwhite) HADOOP-6769. Add an API in FileSystem to get FileSystem instances based on users(ddas via boryas) HADOOP-6813. Add a new newInstance method in FileSystem that takes a "user" as argument (ddas via boryas) HADOOP-6668. Apply audience and stability annotations to classes in common. (tomwhite) HADOOP-6821. Document changes to memory monitoring. (Hemanth Yamijala via tomwhite) OPTIMIZATIONS HADOOP-5595. NameNode does not need to run a replicator to choose a random DataNode. (hairong) HADOOP-5603. Improve NameNode's block placement performance. (hairong) HADOOP-5638. More improvement on block placement performance. (hairong) HADOOP-6180. NameNode slowed down when many files with same filename were moved to Trash. (Boris Shkolnik via hairong) HADOOP-6166. Further improve the performance of the pure-Java CRC32 implementation. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-6271. Add recursive and non recursive create and mkdir to FileContext. (Sanjay Radia via suresh) HADOOP-6261. Add URI based tests for FileContext. (Ravi Pulari via suresh). HADOOP-6307. Add a new SequenceFile.Reader constructor in order to support reading on un-closed file. (szetszwo) HADOOP-6467. Improve the performance on HarFileSystem.listStatus(..). (mahadev via szetszwo) HADOOP-6569. FsShell#cat should avoid calling unecessary getFileStatus before opening a file to read. (hairong) HADOOP-6689. Add directory renaming test to existing FileContext tests. (Eli Collins via suresh) HADOOP-6713. The RPC server Listener thread is a scalability bottleneck. (Dmytro Molkov via hairong) BUG FIXES HADOOP-6748. Removes hadoop.cluster.administrators, cluster administrators acl is passed as parameter in constructor. (amareshwari) HADOOP-6828. Herrior uses old way of accessing logs directories (Sreekanth Ramakrishnan via cos) HADOOP-6788. [Herriot] Exception exclusion functionality is not working correctly. (Vinay Thota via cos) HADOOP-6773. Ivy folder contains redundant files (cos) HADOOP-5379. CBZip2InputStream to throw IOException on data crc error. (Rodrigo Schmidt via zshao) HADOOP-5326. Fixes CBZip2OutputStream data corruption problem. (Rodrigo Schmidt via zshao) HADOOP-4963. Fixes a logging to do with getting the location of map output file. (Amareshwari Sriramadasu via ddas) HADOOP-2337. Trash should close FileSystem on exit and should not start emtying thread if disabled. (shv) HADOOP-5072. Fix failure in TestCodec because testSequenceFileGzipCodec won't pass without native gzip codec. (Zheng Shao via dhruba) HADOOP-5050. TestDFSShell.testFilePermissions should not assume umask setting. (Jakob Homan via szetszwo) HADOOP-4975. Set classloader for nested mapred.join configs. (Jingkei Ly via cdouglas) HADOOP-5078. Remove invalid AMI kernel in EC2 scripts. (tomwhite) HADOOP-5045. FileSystem.isDirectory() should not be deprecated. (Suresh Srinivas via szetszwo) HADOOP-4960. Use datasource time, rather than system time, during metrics demux. (Eric Yang via cdouglas) HADOOP-5032. Export conf dir set in config script. (Eric Yang via cdouglas) HADOOP-5176. Fix a typo in TestDFSIO. (Ravi Phulari via szetszwo) HADOOP-4859. Distinguish daily rolling output dir by adding a timestamp. (Jerome Boulon via cdouglas) HADOOP-4959. Correct system metric collection from top on Redhat 5.1. (Eric Yang via cdouglas) HADOOP-5039. Fix log rolling regex to process only the relevant subdirectories. (Jerome Boulon via cdouglas) HADOOP-5095. Update Chukwa watchdog to accept config parameter. (Jerome Boulon via cdouglas) HADOOP-5147. Correct reference to agent list in Chukwa bin scripts. (Ari Rabkin via cdouglas) HADOOP-5148. Fix logic disabling watchdog timer in Chukwa daemon scripts. (Ari Rabkin via cdouglas) HADOOP-5100. Append, rather than truncate, when creating log4j metrics in Chukwa. (Jerome Boulon via cdouglas) HADOOP-5204. Fix broken trunk compilation on Hudson by letting task-controller be an independent target in build.xml. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5212. Fix the path translation problem introduced by HADOOP-4868 running on cygwin. (Sharad Agarwal via omalley) HADOOP-5226. Add license headers to html and jsp files. (szetszwo) HADOOP-5172. Disable misbehaving Chukwa unit test until it can be fixed. (Jerome Boulon via nigel) HADOOP-4933. Fixes a ConcurrentModificationException problem that shows up when the history viewer is accessed concurrently. (Amar Kamat via ddas) HADOOP-5253. Remove duplicate call to cn-docs target. (Giri Kesavan via nigel) HADOOP-5251. Fix classpath for contrib unit tests to include clover jar. (nigel) HADOOP-5206. Synchronize "unprotected*" methods of FSDirectory on the root. (Jakob Homan via shv) HADOOP-5292. Fix NPE in KFS::getBlockLocations. (Sriram Rao via lohit) HADOOP-5219. Adds a new property io.seqfile.local.dir for use by SequenceFile, which earlier used mapred.local.dir. (Sharad Agarwal via ddas) HADOOP-5300. Fix ant javadoc-dev target and the typo in the class name NameNodeActivtyMBean. (szetszwo) HADOOP-5218. libhdfs unit test failed because it was unable to start namenode/datanode. Fixed. (dhruba) HADOOP-5273. Add license header to TestJobInProgress.java. (Jakob Homan via szetszwo) HADOOP-5229. Remove duplicate version variables in build files (Stefan Groschupf via johan) HADOOP-5383. Avoid building an unused string in NameNode's verifyReplication(). (Raghu Angadi) HADOOP-5347. Create a job output directory for the bbp examples. (szetszwo) HADOOP-5341. Make hadoop-daemon scripts backwards compatible with the changes in HADOOP-4868. (Sharad Agarwal via yhemanth) HADOOP-5456. Fix javadoc links to ClientProtocol#restoreFailedStorage(..). (Boris Shkolnik via szetszwo) HADOOP-5458. Remove leftover Chukwa entries from build, etc. (cdouglas) HADOOP-5386. Modify hdfsproxy unit test to start on a random port, implement clover instrumentation. (Zhiyong Zhang via cdouglas) HADOOP-5511. Add Apache License to EditLogBackupOutputStream. (shv) HADOOP-5507. Fix JMXGet javadoc warnings. (Boris Shkolnik via szetszwo) HADOOP-5191. Accessing HDFS with any ip or hostname should work as long as it points to the interface NameNode is listening on. (Raghu Angadi) HADOOP-5561. Add javadoc.maxmemory parameter to build, preventing OOM exceptions from javadoc-dev. (Jakob Homan via cdouglas) HADOOP-5149. Modify HistoryViewer to ignore unfamiliar files in the log directory. (Hong Tang via cdouglas) HADOOP-5477. Fix rare failure in TestCLI for hosts returning variations of 'localhost'. (Jakob Homan via cdouglas) HADOOP-5194. Disables setsid for tasks run on cygwin. (Ravi Gummadi via ddas) HADOOP-5322. Fix misleading/outdated comments in JobInProgress. (Amareshwari Sriramadasu via cdouglas) HADOOP-5198. Fixes a problem to do with the task PID file being absent and the JvmManager trying to look for it. (Amareshwari Sriramadasu via ddas) HADOOP-5464. DFSClient did not treat write timeout of 0 properly. (Raghu Angadi) HADOOP-4045. Fix processing of IO errors in EditsLog. (Boris Shkolnik via shv) HADOOP-5462. Fixed a double free bug in the task-controller executable. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5652. Fix a bug where in-memory segments are incorrectly retained in memory. (cdouglas) HADOOP-5533. Recovery duration shown on the jobtracker webpage is inaccurate. (Amar Kamat via sharad) HADOOP-5647. Fix TestJobHistory to not depend on /tmp. (Ravi Gummadi via sharad) HADOOP-5661. Fixes some findbugs warnings in o.a.h.mapred* packages and supresses a bunch of them. (Jothi Padmanabhan via ddas) HADOOP-5704. Fix compilation problems in TestFairScheduler and TestCapacityScheduler. (Chris Douglas via szetszwo) HADOOP-5650. Fix safemode messages in the Namenode log. (Suresh Srinivas via szetszwo) HADOOP-5488. Removes the pidfile management for the Task JVM from the framework and instead passes the PID back and forth between the TaskTracker and the Task processes. (Ravi Gummadi via ddas) HADOOP-5658. Fix Eclipse templates. (Philip Zeyliger via shv) HADOOP-5709. Remove redundant synchronization added in HADOOP-5661. (Jothi Padmanabhan via cdouglas) HADOOP-5715. Add conf/mapred-queue-acls.xml to the ignore lists. (szetszwo) HADOOP-5592. Fix typo in Streaming doc in reference to GzipCodec. (Corinne Chandel via tomwhite) HADOOP-5656. Counter for S3N Read Bytes does not work. (Ian Nowland via tomwhite) HADOOP-5406. Fix JNI binding for ZlibCompressor::setDictionary. (Lars Francke via cdouglas) HADOOP-3426. Fix/provide handling when DNS lookup fails on the loopback address. Also cache the result of the lookup. (Steve Loughran via cdouglas) HADOOP-5476. Close the underlying InputStream in SequenceFile::Reader when the constructor throws an exception. (Michael Tamm via cdouglas) HADOOP-5675. Do not launch a job if DistCp has no work to do. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-5737. Fixes a problem in the way the JobTracker used to talk to other daemons like the NameNode to get the job's files. Also adds APIs in the JobTracker to get the FileSystem objects as per the JobTracker's configuration. (Amar Kamat via ddas) HADOOP-5648. Not able to generate gridmix.jar on the already compiled version of hadoop. (gkesavan) HADOOP-5808. Fix import never used javac warnings in hdfs. (szetszwo) HADOOP-5203. TT's version build is too restrictive. (Rick Cox via sharad) HADOOP-5818. Revert the renaming from FSNamesystem.checkSuperuserPrivilege to checkAccess by HADOOP-5643. (Amar Kamat via szetszwo) HADOOP-5820. Fix findbugs warnings for http related codes in hdfs. (szetszwo) HADOOP-5822. Fix javac warnings in several dfs tests related to unncessary casts. (Jakob Homan via szetszwo) HADOOP-5842. Fix a few javac warnings under packages fs and util. (Hairong Kuang via szetszwo) HADOOP-5845. Build successful despite test failure on test-core target. (sharad) HADOOP-5314. Prevent unnecessary saving of the file system image during name-node startup. (Jakob Homan via shv) HADOOP-5855. Fix javac warnings for DisallowedDatanodeException and UnsupportedActionException. (szetszwo) HADOOP-5582. Fixes a problem in Hadoop Vaidya to do with reading counters from job history files. (Suhas Gogate via ddas) HADOOP-5829. Fix javac warnings found in ReplicationTargetChooser, FSImage, Checkpointer, SecondaryNameNode and a few other hdfs classes. (Suresh Srinivas via szetszwo) HADOOP-5835. Fix findbugs warnings found in Block, DataNode, NameNode and a few other hdfs classes. (Suresh Srinivas via szetszwo) HADOOP-5853. Undeprecate HttpServer.addInternalServlet method. (Suresh Srinivas via szetszwo) HADOOP-5801. Fixes the problem: If the hosts file is changed across restart then it should be refreshed upon recovery so that the excluded hosts are lost and the maps are re-executed. (Amar Kamat via ddas) HADOOP-5841. Resolve findbugs warnings in DistributedFileSystem, DatanodeInfo, BlocksMap, DataNodeDescriptor. (Jakob Homan via szetszwo) HADOOP-5878. Fix import and Serializable javac warnings found in hdfs jsp. (szetszwo) HADOOP-5782. Revert a few formatting changes introduced in HADOOP-5015. (Suresh Srinivas via rangadi) HADOOP-5687. NameNode throws NPE if fs.default.name is the default value. (Philip Zeyliger via shv) HADOOP-5867. Fix javac warnings found in NNBench and NNBenchWithoutMR. (Konstantin Boudnik via szetszwo) HADOOP-5728. Fixed FSEditLog.printStatistics IndexOutOfBoundsException. (Wang Xu via johan) HADOOP-5847. Fixed failing Streaming unit tests (gkesavan) HADOOP-5252. Streaming overrides -inputformat option (Klaas Bosteels via sharad) HADOOP-5710. Counter MAP_INPUT_BYTES missing from new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5809. Fix job submission, broken by errant directory creation. (Sreekanth Ramakrishnan and Jothi Padmanabhan via cdouglas) HADOOP-5635. Change distributed cache to work with other distributed file systems. (Andrew Hitchcock via tomwhite) HADOOP-5856. Fix "unsafe multithreaded use of DateFormat" findbugs warning in DataBlockScanner. (Kan Zhang via szetszwo) HADOOP-4864. Fixes a problem to do with -libjars with multiple jars when client and cluster reside on different OSs. (Amareshwari Sriramadasu via ddas) HADOOP-5623. Fixes a problem to do with status messages getting overwritten in streaming jobs. (Rick Cox and Jothi Padmanabhan via ddas) HADOOP-5895. Fixes computation of count of merged bytes for logging. (Ravi Gummadi via ddas) HADOOP-5805. problem using top level s3 buckets as input/output directories. (Ian Nowland via tomwhite) HADOOP-5940. trunk eclipse-plugin build fails while trying to copy commons-cli jar from the lib dir (Giridharan Kesavan via gkesavan) HADOOP-5864. Fix DMI and OBL findbugs in packages hdfs and metrics. (hairong) HADOOP-5935. Fix Hudson's release audit warnings link is broken. (Giridharan Kesavan via gkesavan) HADOOP-5947. Delete empty TestCombineFileInputFormat.java HADOOP-5899. Move a log message in FSEditLog to the right place for avoiding unnecessary log. (Suresh Srinivas via szetszwo) HADOOP-5944. Add Apache license header to BlockManager.java. (Suresh Srinivas via szetszwo) HADOOP-5891. SecondaryNamenode is able to converse with the NameNode even when the default value of dfs.http.address is not overridden. (Todd Lipcon via dhruba) HADOOP-5953. The isDirectory(..) and isFile(..) methods in KosmosFileSystem should not be deprecated. (szetszwo) HADOOP-5954. Fix javac warnings in TestFileCreation, TestSmallBlock, TestFileStatus, TestDFSShellGenericOptions, TestSeekBug and TestDFSStartupVersions. (szetszwo) HADOOP-5956. Fix ivy dependency in hdfsproxy and capacity-scheduler. (Giridharan Kesavan via szetszwo) HADOOP-5836. Bug in S3N handling of directory markers using an object with a trailing "/" causes jobs to fail. (Ian Nowland via tomwhite) HADOOP-5861. s3n files are not getting split by default. (tomwhite) HADOOP-5762. Fix a problem that DistCp does not copy empty directory. (Rodrigo Schmidt via szetszwo) HADOOP-5859. Fix "wait() or sleep() with locks held" findbugs warnings in DFSClient. (Kan Zhang via szetszwo) HADOOP-5457. Fix to continue to run builds even if contrib test fails (Giridharan Kesavan via gkesavan) HADOOP-5963. Remove an unnecessary exception catch in NNBench. (Boris Shkolnik via szetszwo) HADOOP-5989. Fix streaming test failure. (gkesavan) HADOOP-5981. Fix a bug in HADOOP-2838 in parsing mapred.child.env. (Amar Kamat via sharad) HADOOP-5420. Fix LinuxTaskController to kill tasks using the process groups they are launched with. (Sreekanth Ramakrishnan via yhemanth) HADOOP-6031. Remove @author tags from Java source files. (Ravi Phulari via szetszwo) HADOOP-5980. Fix LinuxTaskController so tasks get passed LD_LIBRARY_PATH and other environment variables. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4041. IsolationRunner does not work as documented. (Philip Zeyliger via tomwhite) HADOOP-6004. Fixes BlockLocation deserialization. (Jakob Homan via szetszwo) HADOOP-6079. Serialize proxySource as DatanodeInfo in DataTransferProtocol. (szetszwo) HADOOP-6096. Fix Eclipse project and classpath files following project split. (tomwhite) HADOOP-6122. The great than operator in test-patch.sh should be "-gt" but not ">". (szetszwo) HADOOP-6114. Fix javadoc documentation for FileStatus.getLen. (Dmitry Rzhevskiy via dhruba) HADOOP-6131. A sysproperty should not be set unless the property is set on the ant command line in build.xml (hong tang via mahadev) HADOOP-6137. Fix project specific test-patch requirements (Giridharan Kesavan) HADOOP-6138. Eliminate the deprecated warnings introduced by H-5438. (He Yongqiang via szetszwo) HADOOP-6132. RPC client create an extra connection because of incorrect key for connection cache. (Kan Zhang via rangadi) HADOOP-6123. Add missing classpaths in hadoop-config.sh. (Sharad Agarwal via szetszwo) HADOOP-6172. Fix jar file names in hadoop-config.sh and include ${build.src} as a part of the source list in build.xml. (Hong Tang via szetszwo) HADOOP-6124. Fix javac warning detection in test-patch.sh. (Giridharan Kesavan via szetszwo) HADOOP-6177. FSInputChecker.getPos() would return position greater than the file size. (Hong Tang via hairong) HADOOP-6188. TestTrash uses java.io.File api but not hadoop FileSystem api. (Boris Shkolnik via szetszwo) HADOOP-6192. Fix Shell.getUlimitMemoryCommand to not rely on Map-Reduce specific configs. (acmurthy) HADOOP-6103. Clones the classloader as part of Configuration clone. (Amareshwari Sriramadasu via ddas) HADOOP-6152. Fix classpath variables in bin/hadoop-config.sh and some other scripts. (Aaron Kimball via szetszwo) HADOOP-6215. fix GenericOptionParser to deal with -D with '=' in the value. (Amar Kamat via sharad) HADOOP-6227. Fix Configuration to allow final parameters to be set to null and prevent them from being overridden. (Amareshwari Sriramadasu via yhemanth) HADOOP-6199. Move io.map.skip.index property to core-default from mapred. (Amareshwari Sriramadasu via cdouglas) HADOOP-6229. Attempt to make a directory under an existing file on LocalFileSystem should throw an Exception. (Boris Shkolnik via tomwhite) HADOOP-6243. Fix a NullPointerException in processing deprecated keys. (Sreekanth Ramakrishnan via yhemanth) HADOOP-6009. S3N listStatus incorrectly returns null instead of empty array when called on empty root. (Ian Nowland via tomwhite) HADOOP-6181. Fix .eclipse.templates/.classpath for avro and jets3t jar files. (Carlos Valiente via szetszwo) HADOOP-6196. Fix a bug in SequenceFile.Reader where syncing within the header would cause the reader to read the sync marker as a record. (Jay Booth via cdouglas) HADOOP-6250. Modify test-patch to delete copied XML files before running patch build. (Rahul Kumar Singh via yhemanth) HADOOP-6257. Two TestFileSystem classes are confusing hadoop-hdfs-hdfwithmr. (Philip Zeyliger via tomwhite) HADOOP-6151. Added a input filter to all of the http servlets that quotes html characters in the parameters, to prevent cross site scripting attacks. (omalley) HADOOP-6274. Fix TestLocalFSFileContextMainOperations test failure. (Gary Murry via suresh). HADOOP-6281. Avoid null pointer exceptions when the jsps don't have paramaters (omalley) HADOOP-6285. Fix the result type of the getParameterMap method in the HttpServer.QuotingInputFilter. (omalley) HADOOP-6286. Fix bugs in related to URI handling in glob methods in FileContext. (Boris Shkolnik via suresh) HADOOP-6292. Update native libraries guide. (Corinne Chandel via cdouglas) HADOOP-6327. FileContext tests should not use /tmp and should clean up files. (Sanjay Radia via szetszwo) HADOOP-6318. Upgrade to Avro 1.2.0. (cutting) HADOOP-6334. Fix GenericOptionsParser to understand URI for -files, -libjars and -archives options and fix Path to support URI with fragment. (Amareshwari Sriramadasu via szetszwo) HADOOP-6344. Fix rm and rmr immediately delete files rather than sending to trash, if a user is over-quota. (Jakob Homan via suresh) HADOOP-6347. run-test-core-fault-inject runs a test case twice if -Dtestcase is set (cos) HADOOP-6375. Sync documentation for FsShell du with its implementation. (Todd Lipcon via cdouglas) HADOOP-6441. Protect web ui from cross site scripting attacks (XSS) on the host http header and using encoded utf-7. (omalley) HADOOP-6451. Fix build to run contrib unit tests. (Tom White via cdouglas) HADOOP-6374. JUnit tests should never depend on anything in conf. (Anatoli Fomenko via cos) HADOOP-6290. Prevent duplicate slf4j-simple jar via Avro's classpath. (Owen O'Malley via cdouglas) HADOOP-6293. Fix FsShell -text to work on filesystems other than the default. (cdouglas) HADOOP-6341. Fix test-patch.sh for checkTests function. (gkesavan) HADOOP-6314. Fix "fs -help" for the "-count" commond. (Ravi Phulari via szetszwo) HADOOP-6405. Update Eclipse configuration to match changes to Ivy configuration (Edwin Chan via cos) HADOOP-6411. Remove deprecated file src/test/hadoop-site.xml. (cos) HADOOP-6386. NameNode's HttpServer can't instantiate InetSocketAddress: IllegalArgumentException is thrown (cos) HADOOP-6254. Slow reads cause s3n to fail with SocketTimeoutException. (Andrew Hitchcock via tomwhite) HADOOP-6428. HttpServer sleeps with negative values. (cos) HADOOP-6414. Add command line help for -expunge command. (Ravi Phulari via tomwhite) HADOOP-6391. Classpath should not be part of command line arguments. (Cristian Ivascu via tomwhite) HADOOP-6462. Target "compile" does not exist in contrib/cloud. (tomwhite) HADOOP-6402. testConf.xsl is not well-formed XML. (Steve Loughran via tomwhite) HADOOP-6489. Fix 3 findbugs warnings. (Erik Steffl via suresh) HADOOP-6517. Fix UserGroupInformation so that tokens are saved/retrieved to/from the embedded Subject (Owen O'Malley & Kan Zhang via ddas) HADOOP-6538. Sets hadoop.security.authentication to simple by default. (ddas) HADOOP-6540. Contrib unit tests have invalid XML for core-site, etc. (Aaron Kimball via tomwhite) HADOOP-6521. User specified umask using deprecated dfs.umask must override server configured using new dfs.umaskmode for backward compatibility. (suresh) HADOOP-6522. Fix decoding of codepoint zero in UTF8. (cutting) HADOOP-6505. Use tr rather than sed to effect literal substitution in the build script. (Allen Wittenauer via cdouglas) HADOOP-6548. Replace mortbay imports with commons logging. (cdouglas) HADOOP-6560. Handle invalid har:// uri in HarFileSystem. (szetszwo) HADOOP-6549. TestDoAsEffectiveUser should use ip address of the host for superuser ip check(jnp via boryas) HADOOP-6570. RPC#stopProxy throws NPE if getProxyEngine(proxy) returns null. (hairong) HADOOP-6558. Return null in HarFileSystem.getFileChecksum(..) since no checksum algorithm is implemented. (szetszwo) HADOOP-6572. Makes sure that SASL encryption and push to responder queue for the RPC response happens atomically. (Kan Zhang via ddas) HADOOP-6545. Changes the Key for the FileSystem cache to be UGI (ddas) HADOOP-6609. Fixed deadlock in RPC by replacing shared static DataOutputBuffer in the UTF8 class with a thread local variable. (omalley) HADOOP-6504. Invalid example in the documentation of org.apache.hadoop.util.Tool. (Benoit Sigoure via tomwhite) HADOOP-6546. BloomMapFile can return false negatives. (Clark Jefcoat via tomwhite) HADOOP-6593. TextRecordInputStream doesn't close SequenceFile.Reader. (Chase Bradford via tomwhite) HADOOP-6175. Incorrect version compilation with es_ES.ISO8859-15 locale on Solaris 10. (Urko Benito via tomwhite) HADOOP-6645. Bugs on listStatus for HarFileSystem (rodrigo via mahadev) HADOOP-6645. Re: Bugs on listStatus for HarFileSystem (rodrigo via mahadev) HADOOP-6654. Fix code example in WritableComparable javadoc. (Tom White via szetszwo) HADOOP-6640. FileSystem.get() does RPC retries within a static synchronized block. (hairong) HADOOP-6691. TestFileSystemCaching sometimes hangs. (hairong) HADOOP-6507. Hadoop Common Docs - delete 3 doc files that do not belong under Common. (Corinne Chandel via tomwhite) HADOOP-6439. Fixes handling of deprecated keys to follow order in which keys are defined. (V.V.Chaitanya Krishna via yhemanth) HADOOP-6690. FilterFileSystem correctly handles setTimes call. (Rodrigo Schmidt via dhruba) HADOOP-6703. Prevent renaming a file, directory or symbolic link to itself. (Eli Collins via suresh) HADOOP-6710. Symbolic umask for file creation is not conformant with posix. (suresh) HADOOP-6719. Insert all missing methods in FilterFs. (Rodrigo Schmidt via dhruba) HADOOP-6724. IPC doesn't properly handle IOEs thrown by socket factory. (Todd Lipcon via tomwhite) HADOOP-6722. NetUtils.connect should check that it hasn't connected a socket to itself. (Todd Lipcon via tomwhite) HADOOP-6634. Fix AccessControlList to use short names to verify access control. (Vinod Kumar Vavilapalli via sharad) HADOOP-6709. Re-instate deprecated FileSystem methods that were removed after 0.20. (tomwhite) HADOOP-6630. hadoop-config.sh fails to get executed if hadoop wrapper scripts are in path. (Allen Wittenauer via tomwhite) HADOOP-6742. Add methods HADOOP-6709 from to TestFilterFileSystem. (Eli Collins via tomwhite) HADOOP-6727. Remove UnresolvedLinkException from public FileContext APIs. (Eli Collins via tomwhite) HADOOP-6631. Fix FileUtil.fullyDelete() to continue deleting other files despite failure at any level. (Contributed by Ravi Gummadi and Vinod Kumar Vavilapalli) HADOOP-6723. Unchecked exceptions thrown in IPC Connection should not orphan clients. (Todd Lipcon via tomwhite) HADOOP-6404. Rename the generated artifacts to common instead of core. (tomwhite) HADOOP-6461. Webapps aren't located correctly post-split. (Todd Lipcon and Steve Loughran via tomwhite) HADOOP-6826. Revert FileSystem create method that takes CreateFlags. (tomwhite) HADOOP-6800. Harmonize JAR library versions. (tomwhite) HADOOP-6847. Problem staging 0.21.0 artifacts to Apache Nexus Maven Repository (Giridharan Kesavan via cos) HADOOP-6819. [Herriot] Shell command for getting the new exceptions in the logs returning exitcode 1 after executing successfully. (Vinay Thota via cos) HADOOP-6839. [Herriot] Implement a functionality for getting the user list for creating proxy users. (Vinay Thota via cos) HADOOP-6836. [Herriot]: Generic method for adding/modifying the attributes for new configuration. (Vinay Thota via cos) HADOOP-6860. 'compile-fault-inject' should never be called directly. (Konstantin Boudnik) HADOOP-6790. Instrumented (Herriot) build uses too wide mask to include aspect files. (Konstantin Boudnik) HADOOP-6875. [Herriot] Cleanup of temp. configurations is needed upon restart of a cluster (Vinay Thota via cos) Release 0.20.3 - Unreleased NEW FEATURES HADOOP-6637. Benchmark for establishing RPC session. (shv) BUG FIXES HADOOP-6760. WebServer shouldn't increase port number in case of negative port setting caused by Jetty's race (cos) HADOOP-6881. Make WritableComparator intialize classes when looking for their raw comparator, as classes often register raw comparators in initializers, which are no longer automatically run in Java 6 when a class is referenced. (cutting via omalley) HADOOP-7072. Remove java5 dependencies from build. (cos) Release 0.20.204.0 - Unreleased NEW FEATURES HADOOP-6255. Create RPM and Debian packages for common. Changes deployment layout to be consistent across the binary tgz, rpm, and deb. Adds setup scripts for easy one node cluster configuration and user creation. (Eric Yang via omalley) Release 0.20.203.0 - 2011-5-11 BUG FIXES HADOOP-7258. The Gzip codec should not return null decompressors. (omalley) Release 0.20.2 - 2010-2-16 NEW FEATURES HADOOP-6218. Adds a feature where TFile can be split by Record Sequence number. (Hong Tang and Raghu Angadi via ddas) BUG FIXES HADOOP-6231. Allow caching of filesystem instances to be disabled on a per-instance basis. (tomwhite) HADOOP-5759. Fix for IllegalArgumentException when CombineFileInputFormat is used as job InputFormat. (Amareshwari Sriramadasu via dhruba) HADOOP-6097. Fix Path conversion in makeQualified and reset LineReader byte count at the start of each block in Hadoop archives. (Ben Slusky, Tom White, and Mahadev Konar via cdouglas) HADOOP-6269. Fix threading issue with defaultResource in Configuration. (Sreekanth Ramakrishnan via cdouglas) HADOOP-6460. Reinitializes buffers used for serializing responses in ipc server on exceeding maximum response size to free up Java heap. (suresh) HADOOP-6315. Avoid incorrect use of BuiltInflater/BuiltInDeflater in GzipCodec. (Aaron Kimball via cdouglas) HADOOP-6498. IPC client bug may cause rpc call hang. (Ruyue Ma and hairong via hairong) IMPROVEMENTS HADOOP-5611. Fix C++ libraries to build on Debian Lenny. (Todd Lipcon via tomwhite) HADOOP-5612. Some c++ scripts are not chmodded before ant execution. (Todd Lipcon via tomwhite) HADOOP-1849. Add undocumented configuration parameter for per handler call queue size in IPC Server. (shv) Release 0.20.1 - 2009-09-01 INCOMPATIBLE CHANGES HADOOP-5726. Remove pre-emption from capacity scheduler code base. (Rahul Kumar Singh via yhemanth) HADOOP-5881. Simplify memory monitoring and scheduling related configuration. (Vinod Kumar Vavilapalli via yhemanth) NEW FEATURES HADOOP-6080. Introduce -skipTrash option to rm and rmr. (Jakob Homan via shv) HADOOP-3315. Add a new, binary file foramt, TFile. (Hong Tang via cdouglas) IMPROVEMENTS HADOOP-5711. Change Namenode file close log to info. (szetszwo) HADOOP-5736. Update the capacity scheduler documentation for features like memory based scheduling, job initialization and removal of pre-emption. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5714. Add a metric for NameNode getFileInfo operation. (Jakob Homan via szetszwo) HADOOP-4372. Improves the way history filenames are obtained and manipulated. (Amar Kamat via ddas) HADOOP-5897. Add name-node metrics to capture java heap usage. (Suresh Srinivas via shv) OPTIMIZATIONS BUG FIXES HADOOP-5691. Makes org.apache.hadoop.mapreduce.Reducer concrete class instead of abstract. (Amareshwari Sriramadasu via sharad) HADOOP-5646. Fixes a problem in TestQueueCapacities. (Vinod Kumar Vavilapalli via ddas) HADOOP-5655. TestMRServerPorts fails on java.net.BindException. (Devaraj Das via hairong) HADOOP-5654. TestReplicationPolicy. fails on java.net.BindException. (hairong) HADOOP-5688. Fix HftpFileSystem checksum path construction. (Tsz Wo (Nicholas) Sze via cdouglas) HADOOP-4674. Fix fs help messages for -test, -text, -tail, -stat and -touchz options. (Ravi Phulari via szetszwo) HADOOP-5718. Remove the check for the default queue in capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5719. Remove jobs that failed initialization from the waiting queue in the capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4744. Attaching another fix to the jetty port issue. The TaskTracker kills itself if it ever discovers that the port to which jetty is actually bound is invalid (-1). (ddas) HADOOP-5349. Fixes a problem in LocalDirAllocator to check for the return path value that is returned for the case where the file we want to write is of an unknown size. (Vinod Kumar Vavilapalli via ddas) HADOOP-5636. Prevents a job from going to RUNNING state after it has been KILLED (this used to happen when the SetupTask would come back with a success after the job has been killed). (Amar Kamat via ddas) HADOOP-5641. Fix a NullPointerException in capacity scheduler's memory based scheduling code when jobs get retired. (yhemanth) HADOOP-5828. Use absolute path for mapred.local.dir of JobTracker in MiniMRCluster. (yhemanth) HADOOP-4981. Fix capacity scheduler to schedule speculative tasks correctly in the presence of High RAM jobs. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5210. Solves a problem in the progress report of the reduce task. (Ravi Gummadi via ddas) HADOOP-5850. Fixes a problem to do with not being able to jobs with 0 maps/reduces. (Vinod K V via ddas) HADOOP-4626. Correct the API links in hdfs forrest doc so that they point to the same version of hadoop. (szetszwo) HADOOP-5883. Fixed tasktracker memory monitoring to account for momentary spurts in memory usage due to java's fork() model. (yhemanth) HADOOP-5539. Fixes a problem to do with not preserving intermediate output compression for merged data. (Jothi Padmanabhan and Billy Pearson via ddas) HADOOP-5932. Fixes a problem in capacity scheduler in computing available memory on a tasktracker. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-5908. Fixes a problem to do with ArithmeticException in the JobTracker when there are jobs with 0 maps. (Amar Kamat via ddas) HADOOP-5924. Fixes a corner case problem to do with job recovery with empty history files. Also, after a JT restart, sends KillTaskAction to tasks that report back but the corresponding job hasn't been initialized yet. (Amar Kamat via ddas) HADOOP-5882. Fixes a reducer progress update problem for new mapreduce api. (Amareshwari Sriramadasu via sharad) HADOOP-5746. Fixes a corner case problem in Streaming, where if an exception happens in MROutputThread after the last call to the map/reduce method, the exception goes undetected. (Amar Kamat via ddas) HADOOP-5884. Fixes accounting in capacity scheduler so that high RAM jobs take more slots. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-5937. Correct a safemode message in FSNamesystem. (Ravi Phulari via szetszwo) HADOOP-5869. Fix bug in assignment of setup / cleanup task that was causing TestQueueCapacities to fail. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5921. Fixes a problem in the JobTracker where it sometimes never used to come up due to a system file creation on JobTracker's system-dir failing. This problem would sometimes show up only when the FS for the system-dir (usually HDFS) is started at nearly the same time as the JobTracker. (Amar Kamat via ddas) HADOOP-5920. Fixes a testcase failure for TestJobHistory. (Amar Kamat via ddas) HADOOP-6139. Fix the FsShell help messages for rm and rmr. (Jakob Homan via szetszwo) HADOOP-6145. Fix FsShell rm/rmr error messages when there is a FNFE. (Jakob Homan via szetszwo) HADOOP-6150. Users should be able to instantiate comparator using TFile API. (Hong Tang via rangadi) Release 0.20.0 - 2009-04-15 INCOMPATIBLE CHANGES HADOOP-4210. Fix findbugs warnings for equals implementations of mapred ID classes. Removed public, static ID::read and ID::forName; made ID an abstract class. (Suresh Srinivas via cdouglas) HADOOP-4253. Fix various warnings generated by findbugs. Following deprecated methods in RawLocalFileSystem are removed: public String getName() public void lock(Path p, boolean shared) public void release(Path p) (Suresh Srinivas via johan) HADOOP-4618. Move http server from FSNamesystem into NameNode. FSNamesystem.getNameNodeInfoPort() is removed. FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort() replaced by FSNamesystem.getDFSNameNodeAddress(). NameNode(bindAddress, conf) is removed. (shv) HADOOP-4567. GetFileBlockLocations returns the NetworkTopology information of the machines where the blocks reside. (dhruba) HADOOP-4435. The JobTracker WebUI displays the amount of heap memory in use. (dhruba) HADOOP-4628. Move Hive into a standalone subproject. (omalley) HADOOP-4188. Removes task's dependency on concrete filesystems. (Sharad Agarwal via ddas) HADOOP-1650. Upgrade to Jetty 6. (cdouglas) HADOOP-3986. Remove static Configuration from JobClient. (Amareshwari Sriramadasu via cdouglas) JobClient::setCommandLineConfig is removed JobClient::getCommandLineConfig is removed JobShell, TestJobShell classes are removed HADOOP-4422. S3 file systems should not create bucket. (David Phillips via tomwhite) HADOOP-4035. Support memory based scheduling in capacity scheduler. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-3497. Fix bug in overly restrictive file globbing with a PathFilter. (tomwhite) HADOOP-4445. Replace running task counts with running task percentage in capacity scheduler UI. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4631. Splits the configuration into three parts - one for core, one for mapred and the last one for HDFS. (Sharad Agarwal via cdouglas) HADOOP-3344. Fix libhdfs build to use autoconf and build the same architecture (32 vs 64 bit) of the JVM running Ant. The libraries for pipes, utils, and libhdfs are now all in c++//lib. (Giridharan Kesavan via nigel) HADOOP-4874. Remove LZO codec because of licensing issues. (omalley) HADOOP-4970. The full path name of a file is preserved inside Trash. (Prasad Chakka via dhruba) HADOOP-4103. NameNode keeps a count of missing blocks. It warns on WebUI if there are such blocks. '-report' and '-metaSave' have extra info to track such blocks. (Raghu Angadi) HADOOP-4783. Change permissions on history files on the jobtracker to be only group readable instead of world readable. (Amareshwari Sriramadasu via yhemanth) NEW FEATURES HADOOP-4575. Add a proxy service for relaying HsftpFileSystem requests. Includes client authentication via user certificates and config-based access control. (Kan Zhang via cdouglas) HADOOP-4661. Add DistCh, a new tool for distributed ch{mod,own,grp}. (szetszwo) HADOOP-4709. Add several new features and bug fixes to Chukwa. Added Hadoop Infrastructure Care Center (UI for visualize data collected by Chukwa) Added FileAdaptor for streaming small file in one chunk Added compression to archive and demux output Added unit tests and validation for agent, collector, and demux map reduce job Added database loader for loading demux output (sequence file) to jdbc connected database Added algorithm to distribute collector load more evenly (Jerome Boulon, Eric Yang, Andy Konwinski, Ariel Rabkin via cdouglas) HADOOP-4179. Add Vaidya tool to analyze map/reduce job logs for performanc problems. (Suhas Gogate via omalley) HADOOP-4029. Add NameNode storage information to the dfshealth page and move DataNode information to a separated page. (Boris Shkolnik via szetszwo) HADOOP-4348. Add service-level authorization for Hadoop. (acmurthy) HADOOP-4826. Introduce admin command saveNamespace. (shv) HADOOP-3063 BloomMapFile - fail-fast version of MapFile for sparsely populated key space (Andrzej Bialecki via stack) HADOOP-1230. Add new map/reduce API and deprecate the old one. Generally, the old code should work without problem. The new api is in org.apache.hadoop.mapreduce and the old classes in org.apache.hadoop.mapred are deprecated. Differences in the new API: 1. All of the methods take Context objects that allow us to add new methods without breaking compatability. 2. Mapper and Reducer now have a "run" method that is called once and contains the control loop for the task, which lets applications replace it. 3. Mapper and Reducer by default are Identity Mapper and Reducer. 4. The FileOutputFormats use part-r-00000 for the output of reduce 0 and part-m-00000 for the output of map 0. 5. The reduce grouping comparator now uses the raw compare instead of object compare. 6. The number of maps in FileInputFormat is controlled by min and max split size rather than min size and the desired number of maps. (omalley) HADOOP-3305. Use Ivy to manage dependencies. (Giridharan Kesavan and Steve Loughran via cutting) IMPROVEMENTS HADOOP-4749. Added a new counter REDUCE_INPUT_BYTES. (Yongqiang He via zshao) HADOOP-4234. Fix KFS "glue" layer to allow applications to interface with multiple KFS metaservers. (Sriram Rao via lohit) HADOOP-4245. Update to latest version of KFS "glue" library jar. (Sriram Rao via lohit) HADOOP-4244. Change test-patch.sh to check Eclipse classpath no matter it is run by Hudson or not. (szetszwo) HADOOP-3180. Add name of missing class to WritableName.getClass IOException. (Pete Wyckoff via omalley) HADOOP-4178. Make the capacity scheduler's default values configurable. (Sreekanth Ramakrishnan via omalley) HADOOP-4262. Generate better error message when client exception has null message. (stevel via omalley) HADOOP-4226. Refactor and document LineReader to make it more readily understandable. (Yuri Pradkin via cdouglas) HADOOP-4238. When listing jobs, if scheduling information isn't available print NA instead of empty output. (Sreekanth Ramakrishnan via johan) HADOOP-4284. Support filters that apply to all requests, or global filters, to HttpServer. (Kan Zhang via cdouglas) HADOOP-4276. Improve the hashing functions and deserialization of the mapred ID classes. (omalley) HADOOP-4485. Add a compile-native ant task, as a shorthand. (enis) HADOOP-4454. Allow # comments in slaves file. (Rama Ramasamy via omalley) HADOOP-3461. Remove hdfs.StringBytesWritable. (szetszwo) HADOOP-4437. Use Halton sequence instead of java.util.Random in PiEstimator. (szetszwo) HADOOP-4572. Change INode and its sub-classes to package private. (szetszwo) HADOOP-4187. Does a runtime lookup for JobConf/JobConfigurable, and if found, invokes the appropriate configure method. (Sharad Agarwal via ddas) HADOOP-4453. Improve ssl configuration and handling in HsftpFileSystem, particularly when used with DistCp. (Kan Zhang via cdouglas) HADOOP-4583. Several code optimizations in HDFS. (Suresh Srinivas via szetszwo) HADOOP-3923. Remove org.apache.hadoop.mapred.StatusHttpServer. (szetszwo) HADOOP-4622. Explicitly specify interpretor for non-native pipes binaries. (Fredrik Hedberg via johan) HADOOP-4505. Add a unit test to test faulty setup task and cleanup task killing the job. (Amareshwari Sriramadasu via johan) HADOOP-4608. Don't print a stack trace when the example driver gets an unknown program to run. (Edward Yoon via omalley) HADOOP-4645. Package HdfsProxy contrib project without the extra level of directories. (Kan Zhang via omalley) HADOOP-4126. Allow access to HDFS web UI on EC2 (tomwhite via omalley) HADOOP-4612. Removes RunJar's dependency on JobClient. (Sharad Agarwal via ddas) HADOOP-4185. Adds setVerifyChecksum() method to FileSystem. (Sharad Agarwal via ddas) HADOOP-4523. Prevent too many tasks scheduled on a node from bringing it down by monitoring for cumulative memory usage across tasks. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-4640. Adds an input format that can split lzo compressed text files. (johan) HADOOP-4666. Launch reduces only after a few maps have run in the Fair Scheduler. (Matei Zaharia via johan) HADOOP-4339. Remove redundant calls from FileSystem/FsShell when generating/processing ContentSummary. (David Phillips via cdouglas) HADOOP-2774. Add counters tracking records spilled to disk in MapTask and ReduceTask. (Ravi Gummadi via cdouglas) HADOOP-4513. Initialize jobs asynchronously in the capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4649. Improve abstraction for spill indices. (cdouglas) HADOOP-3770. Add gridmix2, an iteration on the gridmix benchmark. (Runping Qi via cdouglas) HADOOP-4708. Add support for dfsadmin commands in TestCLI. (Boris Shkolnik via cdouglas) HADOOP-4758. Add a splitter for metrics contexts to support more than one type of collector. (cdouglas) HADOOP-4722. Add tests for dfsadmin quota error messages. (Boris Shkolnik via cdouglas) HADOOP-4690. fuse-dfs - create source file/function + utils + config + main source files. (pete wyckoff via mahadev) HADOOP-3750. Fix and enforce module dependencies. (Sharad Agarwal via tomwhite) HADOOP-4747. Speed up FsShell::ls by removing redundant calls to the filesystem. (David Phillips via cdouglas) HADOOP-4305. Improves the blacklisting strategy, whereby, tasktrackers that are blacklisted are not given tasks to run from other jobs, subject to the following conditions (all must be met): 1) The TaskTracker has been blacklisted by at least 4 jobs (configurable) 2) The TaskTracker has been blacklisted 50% more number of times than the average (configurable) 3) The cluster has less than 50% trackers blacklisted Once in 24 hours, a TaskTracker blacklisted for all jobs is given a chance. Restarting the TaskTracker moves it out of the blacklist. (Amareshwari Sriramadasu via ddas) HADOOP-4688. Modify the MiniMRDFSSort unit test to spill multiple times, exercising the map-side merge code. (cdouglas) HADOOP-4737. Adds the KILLED notification when jobs get killed. (Amareshwari Sriramadasu via ddas) HADOOP-4728. Add a test exercising different namenode configurations. (Boris Shkolnik via cdouglas) HADOOP-4807. Adds JobClient commands to get the active/blacklisted tracker names. Also adds commands to display running/completed task attempt IDs. (ddas) HADOOP-4699. Remove checksum validation from map output servlet. (cdouglas) HADOOP-4838. Added a registry to automate metrics and mbeans management. (Sanjay Radia via acmurthy) HADOOP-3136. Fixed the default scheduler to assign multiple tasks to each tasktracker per heartbeat, when feasible. To ensure locality isn't hurt too badly, the scheudler will not assign more than one off-switch task per heartbeat. The heartbeat interval is also halved since the task-tracker is fixed to no longer send out heartbeats on each task completion. A slow-start for scheduling reduces is introduced to ensure that reduces aren't started till sufficient number of maps are done, else reduces of jobs whose maps aren't scheduled might swamp the cluster. Configuration changes to mapred-default.xml: add mapred.reduce.slowstart.completed.maps (acmurthy) HADOOP-4545. Add example and test case of secondary sort for the reduce. (omalley) HADOOP-4753. Refactor gridmix2 to reduce code duplication. (cdouglas) HADOOP-4909. Fix Javadoc and make some of the API more consistent in their use of the JobContext instead of Configuration. (omalley) HADOOP-4920. Stop storing Forrest output in Subversion. (cutting) HADOOP-4948. Add parameters java5.home and forrest.home to the ant commands in test-patch.sh. (Giridharan Kesavan via szetszwo) HADOOP-4830. Add end-to-end test cases for testing queue capacities. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-4980. Improve code layout of capacity scheduler to make it easier to fix some blocker bugs. (Vivek Ratan via yhemanth) HADOOP-4916. Make user/location of Chukwa installation configurable by an external properties file. (Eric Yang via cdouglas) HADOOP-4950. Make the CompressorStream, DecompressorStream, BlockCompressorStream, and BlockDecompressorStream public to facilitate non-Hadoop codecs. (omalley) HADOOP-4843. Collect job history and configuration in Chukwa. (Eric Yang via cdouglas) HADOOP-5030. Build Chukwa RPM to install into configured directory. (Eric Yang via cdouglas) HADOOP-4828. Updates documents to do with configuration (HADOOP-4631). (Sharad Agarwal via ddas) HADOOP-4939. Adds a test that would inject random failures for tasks in large jobs and would also inject TaskTracker failures. (ddas) HADOOP-4944. A configuration file can include other configuration files. (Rama Ramasamy via dhruba) HADOOP-4804. Provide Forrest documentation for the Fair Scheduler. (Sreekanth Ramakrishnan via yhemanth) HADOOP-5248. A testcase that checks for the existence of job directory after the job completes. Fails if it exists. (ddas) HADOOP-4664. Introduces multiple job initialization threads, where the number of threads are configurable via mapred.jobinit.threads. (Matei Zaharia and Jothi Padmanabhan via ddas) HADOOP-4191. Adds a testcase for JobHistory. (Ravi Gummadi via ddas) HADOOP-5466. Change documenation CSS style for headers and code. (Corinne Chandel via szetszwo) HADOOP-5275. Add ivy directory and files to built tar. (Giridharan Kesavan via nigel) HADOOP-5468. Add sub-menus to forrest documentation and make some minor edits. (Corinne Chandel via szetszwo) HADOOP-5437. Fix TestMiniMRDFSSort to properly test jvm-reuse. (omalley) HADOOP-5521. Removes dependency of TestJobInProgress on RESTART_COUNT JobHistory tag. (Ravi Gummadi via ddas) OPTIMIZATIONS HADOOP-3293. Fixes FileInputFormat to do provide locations for splits based on the rack/host that has the most number of bytes. (Jothi Padmanabhan via ddas) HADOOP-4683. Fixes Reduce shuffle scheduler to invoke getMapCompletionEvents in a separate thread. (Jothi Padmanabhan via ddas) BUG FIXES HADOOP-4204. Fix findbugs warnings related to unused variables, naive Number subclass instantiation, Map iteration, and badly scoped inner classes. (Suresh Srinivas via cdouglas) HADOOP-4207. Update derby jar file to release 10.4.2 release. (Prasad Chakka via dhruba) HADOOP-4325. SocketInputStream.read() should return -1 in case EOF. (Raghu Angadi) HADOOP-4408. FsAction functions need not create new objects. (cdouglas) HADOOP-4440. TestJobInProgressListener tests for jobs killed in queued state (Amar Kamat via ddas) HADOOP-4346. Implement blocking connect so that Hadoop is not affected by selector problem with JDK default implementation. (Raghu Angadi) HADOOP-4388. If there are invalid blocks in the transfer list, Datanode should handle them and keep transferring the remaining blocks. (Suresh Srinivas via szetszwo) HADOOP-4587. Fix a typo in Mapper javadoc. (Koji Noguchi via szetszwo) HADOOP-4530. In fsck, HttpServletResponse sendError fails with IllegalStateException. (hairong) HADOOP-4377. Fix a race condition in directory creation in NativeS3FileSystem. (David Phillips via cdouglas) HADOOP-4621. Fix javadoc warnings caused by duplicate jars. (Kan Zhang via cdouglas) HADOOP-4566. Deploy new hive code to support more types. (Zheng Shao via dhruba) HADOOP-4571. Add chukwa conf files to svn:ignore list. (Eric Yang via szetszwo) HADOOP-4589. Correct PiEstimator output messages and improve the code readability. (szetszwo) HADOOP-4650. Correct a mismatch between the default value of local.cache.size in the config and the source. (Jeff Hammerbacher via cdouglas) HADOOP-4606. Fix cygpath error if the log directory does not exist. (szetszwo via omalley) HADOOP-4141. Fix bug in ScriptBasedMapping causing potential infinite loop on misconfigured hadoop-site. (Aaron Kimball via tomwhite) HADOOP-4691. Correct a link in the javadoc of IndexedSortable. (szetszwo) HADOOP-4598. '-setrep' command skips under-replicated blocks. (hairong) HADOOP-4429. Set defaults for user, group in UnixUserGroupInformation so login fails more predictably when misconfigured. (Alex Loddengaard via cdouglas) HADOOP-4676. Fix broken URL in blacklisted tasktrackers page. (Amareshwari Sriramadasu via cdouglas) HADOOP-3422 Ganglia counter metrics are all reported with the metric name "value", so the counter values can not be seen. (Jason Attributor and Brian Bockelman via stack) HADOOP-4704. Fix javadoc typos "the the". (szetszwo) HADOOP-4677. Fix semantics of FileSystem::getBlockLocations to return meaningful values. (Hong Tang via cdouglas) HADOOP-4669. Use correct operator when evaluating whether access time is enabled (Dhruba Borthakur via cdouglas) HADOOP-4732. Pass connection and read timeouts in the correct order when setting up fetch in reduce. (Amareshwari Sriramadasu via cdouglas) HADOOP-4558. Fix capacity reclamation in capacity scheduler. (Amar Kamat via yhemanth) HADOOP-4770. Fix rungridmix_2 script to work with RunJar. (cdouglas) HADOOP-4738. When using git, the saveVersion script will use only the commit hash for the version and not the message, which requires escaping. (cdouglas) HADOOP-4576. Show pending job count instead of task count in the UI per queue in capacity scheduler. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4623. Maintain running tasks even if speculative execution is off. (Amar Kamat via yhemanth) HADOOP-4786. Fix broken compilation error in TestTrackerBlacklistAcrossJobs. (yhemanth) HADOOP-4785. Fixes theJobTracker heartbeat to not make two calls to System.currentTimeMillis(). (Amareshwari Sriramadasu via ddas) HADOOP-4792. Add generated Chukwa configuration files to version control ignore lists. (cdouglas) HADOOP-4796. Fix Chukwa test configuration, remove unused components. (Eric Yang via cdouglas) HADOOP-4708. Add binaries missed in the initial checkin for Chukwa. (Eric Yang via cdouglas) HADOOP-4805. Remove black list collector from Chukwa Agent HTTP Sender. (Eric Yang via cdouglas) HADOOP-4837. Move HADOOP_CONF_DIR configuration to chukwa-env.sh (Jerome Boulon via cdouglas) HADOOP-4825. Use ps instead of jps for querying process status in Chukwa. (Eric Yang via cdouglas) HADOOP-4844. Fixed javadoc for org.apache.hadoop.fs.permission.AccessControlException to document that it's deprecated in favour of org.apache.hadoop.security.AccessControlException. (acmurthy) HADOOP-4706. Close the underlying output stream in IFileOutputStream::close. (Jothi Padmanabhan via cdouglas) HADOOP-4855. Fixed command-specific help messages for refreshServiceAcl in DFSAdmin and MRAdmin. (acmurthy) HADOOP-4820. Remove unused method FSNamesystem::deleteInSafeMode. (Suresh Srinivas via cdouglas) HADOOP-4698. Lower io.sort.mb to 10 in the tests and raise the junit memory limit to 512m from 256m. (Nigel Daley via cdouglas) HADOOP-4860. Split TestFileTailingAdapters into three separate tests to avoid contention. (Eric Yang via cdouglas) HADOOP-3921. Fixed clover (code coverage) target to work with JDK 6. (tomwhite via nigel) HADOOP-4845. Modify the reduce input byte counter to record only the compressed size and add a human-readable label. (Yongqiang He via cdouglas) HADOOP-4458. Add a test creating symlinks in the working directory. (Amareshwari Sriramadasu via cdouglas) HADOOP-4879. Fix org.apache.hadoop.mapred.Counters to correctly define Object.equals rather than depend on contentEquals api. (omalley via acmurthy) HADOOP-4791. Fix rpm build process for Chukwa. (Eric Yang via cdouglas) HADOOP-4771. Correct initialization of the file count for directories with quotas. (Ruyue Ma via shv) HADOOP-4878. Fix eclipse plugin classpath file to point to ivy's resolved lib directory and added the same to test-patch.sh. (Giridharan Kesavan via acmurthy) HADOOP-4774. Fix default values of some capacity scheduler configuration items which would otherwise not work on a fresh checkout. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4876. Fix capacity scheduler reclamation by updating count of pending tasks correctly. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4849. Documentation for Service Level Authorization implemented in HADOOP-4348. (acmurthy) HADOOP-4827. Replace Consolidator with Aggregator macros in Chukwa (Eric Yang via cdouglas) HADOOP-4894. Correctly parse ps output in Chukwa jettyCollector.sh. (Ari Rabkin via cdouglas) HADOOP-4892. Close fds out of Chukwa ExecPlugin. (Ari Rabkin via cdouglas) HADOOP-4889. Fix permissions in RPM packaging. (Eric Yang via cdouglas) HADOOP-4869. Fixes the TT-JT heartbeat to have an explicit flag for restart apart from the initialContact flag that there was earlier. (Amareshwari Sriramadasu via ddas) HADOOP-4716. Fixes ReduceTask.java to clear out the mapping between hosts and MapOutputLocation upon a JT restart (Amar Kamat via ddas) HADOOP-4880. Removes an unnecessary testcase from TestJobTrackerRestart. (Amar Kamat via ddas) HADOOP-4924. Fixes a race condition in TaskTracker re-init. (ddas) HADOOP-4854. Read reclaim capacity interval from capacity scheduler configuration. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4896. HDFS Fsck does not load HDFS configuration. (Raghu Angadi) HADOOP-4956. Creates TaskStatus for failed tasks with an empty Counters object instead of null. (ddas) HADOOP-4979. Fix capacity scheduler to block cluster for failed high RAM requirements across task types. (Vivek Ratan via yhemanth) HADOOP-4949. Fix native compilation. (Chris Douglas via acmurthy) HADOOP-4787. Fixes the testcase TestTrackerBlacklistAcrossJobs which was earlier failing randomly. (Amareshwari Sriramadasu via ddas) HADOOP-4914. Add description fields to Chukwa init.d scripts (Eric Yang via cdouglas) HADOOP-4884. Make tool tip date format match standard HICC format. (Eric Yang via cdouglas) HADOOP-4925. Make Chukwa sender properties configurable. (Ari Rabkin via cdouglas) HADOOP-4947. Make Chukwa command parsing more forgiving of whitespace. (Ari Rabkin via cdouglas) HADOOP-5026. Make chukwa/bin scripts executable in repository. (Andy Konwinski via cdouglas) HADOOP-4977. Fix a deadlock between the reclaimCapacity and assignTasks in capacity scheduler. (Vivek Ratan via yhemanth) HADOOP-4988. Fix reclaim capacity to work even when there are queues with no capacity. (Vivek Ratan via yhemanth) HADOOP-5065. Remove generic parameters from argument to setIn/OutputFormatClass so that it works with SequenceIn/OutputFormat. (cdouglas via omalley) HADOOP-4818. Pass user config to instrumentation API. (Eric Yang via cdouglas) HADOOP-4993. Fix Chukwa agent configuration and startup to make it both more modular and testable. (Ari Rabkin via cdouglas) HADOOP-5048. Fix capacity scheduler to correctly cleanup jobs that are killed after initialization, but before running. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4671. Mark loop control variables shared between threads as volatile. (cdouglas) HADOOP-5079. HashFunction inadvertently destroys some randomness (Jonathan Ellis via stack) HADOOP-4999. A failure to write to FsEditsLog results in IndexOutOfBounds exception. (Boris Shkolnik via rangadi) HADOOP-5139. Catch IllegalArgumentException during metrics registration in RPC. (Hairong Kuang via szetszwo) HADOOP-5085. Copying a file to local with Crc throws an exception. (hairong) HADOOP-5211. Fix check for job completion in TestSetupAndCleanupFailure. (enis) HADOOP-5254. The Configuration class should be able to work with XML parsers that do not support xmlinclude. (Steve Loughran via dhruba) HADOOP-4692. Namenode in infinite loop for replicating/deleting corrupt blocks. (hairong) HADOOP-5255. Fix use of Math.abs to avoid overflow. (Jonathan Ellis via cdouglas) HADOOP-5269. Fixes a problem to do with tasktracker holding on to FAILED_UNCLEAN or KILLED_UNCLEAN tasks forever. (Amareshwari Sriramadasu via ddas) HADOOP-5214. Fixes a ConcurrentModificationException while the Fairshare Scheduler accesses the tasktrackers stored by the JobTracker. (Rahul Kumar Singh via yhemanth) HADOOP-5233. Addresses the three issues - Race condition in updating status, NPE in TaskTracker task localization when the conf file is missing (HADOOP-5234) and NPE in handling KillTaskAction of a cleanup task (HADOOP-5235). (Amareshwari Sriramadasu via ddas) HADOOP-5247. Introduces a broadcast of KillJobAction to all trackers when a job finishes. This fixes a bunch of problems to do with NPE when a completed job is not in memory and a tasktracker comes to the jobtracker with a status report of a task belonging to that job. (Amar Kamat via ddas) HADOOP-5282. Fixed job history logs for task attempts that are failed by the JobTracker, say due to lost task trackers. (Amar Kamat via yhemanth) HADOOP-5241. Fixes a bug in disk-space resource estimation. Makes the estimation formula linear where blowUp = Total-Output/Total-Input. (Sharad Agarwal via ddas) HADOOP-5142. Fix MapWritable#putAll to store key/value classes. (Do??acan G??ney via enis) HADOOP-4744. Workaround for jetty6 returning -1 when getLocalPort is invoked on the connector. The workaround patch retries a few times before failing. (Jothi Padmanabhan via yhemanth) HADOOP-5280. Adds a check to prevent a task state transition from FAILED to any of UNASSIGNED, RUNNING, COMMIT_PENDING or SUCCEEDED. (ddas) HADOOP-5272. Fixes a problem to do with detecting whether an attempt is the first attempt of a Task. This affects JobTracker restart. (Amar Kamat via ddas) HADOOP-5306. Fixes a problem to do with logging/parsing the http port of a lost tracker. Affects JobTracker restart. (Amar Kamat via ddas) HADOOP-5111. Fix Job::set* methods to work with generics. (cdouglas) HADOOP-5274. Fix gridmix2 dependency on wordcount example. (cdouglas) HADOOP-5145. Balancer sometimes runs out of memory after running days or weeks. (hairong) HADOOP-5338. Fix jobtracker restart to clear task completion events cached by tasktrackers forcing them to fetch all events afresh, thus avoiding missed task completion events on the tasktrackers. (Amar Kamat via yhemanth) HADOOP-4695. Change TestGlobalFilter so that it allows a web page to be filtered more than once for a single access. (Kan Zhang via szetszwo) HADOOP-5298. Change TestServletFilter so that it allows a web page to be filtered more than once for a single access. (szetszwo) HADOOP-5432. Disable ssl during unit tests in hdfsproxy, as it is unused and causes failures. (cdouglas) HADOOP-5416. Correct the shell command "fs -test" forrest doc description. (Ravi Phulari via szetszwo) HADOOP-5327. Fixed job tracker to remove files from system directory on ACL check failures and also check ACLs on restart. (Amar Kamat via yhemanth) HADOOP-5395. Change the exception message when a job is submitted to an invalid queue. (Rahul Kumar Singh via yhemanth) HADOOP-5276. Fixes a problem to do with updating the start time of a task when the tracker that ran the task is lost. (Amar Kamat via ddas) HADOOP-5278. Fixes a problem to do with logging the finish time of a task during recovery (after a JobTracker restart). (Amar Kamat via ddas) HADOOP-5490. Fixes a synchronization problem in the EagerTaskInitializationListener class. (Jothi Padmanabhan via ddas) HADOOP-5493. The shuffle copier threads return the codecs back to the pool when the shuffle completes. (Jothi Padmanabhan via ddas) HADOOP-5414. Fixes IO exception while executing hadoop fs -touchz fileName by making sure that lease renewal thread exits before dfs client exits. (hairong) HADOOP-5103. FileInputFormat now reuses the clusterMap network topology object and that brings down the log messages in the JobClient to do with NetworkTopology.add significantly. (Jothi Padmanabhan via ddas) HADOOP-5483. Fixes a problem in the Directory Cleanup Thread due to which TestMiniMRWithDFS sometimes used to fail. (ddas) HADOOP-5281. Prevent sharing incompatible ZlibCompressor instances between GzipCodec and DefaultCodec. (cdouglas) HADOOP-5463. Balancer throws "Not a host:port pair" unless port is specified in fs.default.name. (Stuart White via hairong) HADOOP-5514. Fix JobTracker metrics and add metrics for wating, failed tasks. (cdouglas) HADOOP-5516. Fix NullPointerException in TaskMemoryManagerThread that comes when monitored processes disappear when the thread is running. (Vinod Kumar Vavilapalli via yhemanth) HADOOP-5382. Support combiners in the new context object API. (omalley) HADOOP-5471. Fixes a problem to do with updating the log.index file in the case where a cleanup task is run. (Amareshwari Sriramadasu via ddas) HADOOP-5534. Fixed a deadlock in Fair scheduler's servlet. (Rahul Kumar Singh via yhemanth) HADOOP-5328. Fixes a problem in the renaming of job history files during job recovery. (Amar Kamat via ddas) HADOOP-5417. Don't ignore InterruptedExceptions that happen when calling into rpc. (omalley) HADOOP-5320. Add a close() in TestMapReduceLocal. (Jothi Padmanabhan via szetszwo) HADOOP-5520. Fix a typo in disk quota help message. (Ravi Phulari via szetszwo) HADOOP-5519. Remove claims from mapred-default.xml that prime numbers of tasks are helpful. (Owen O'Malley via szetszwo) HADOOP-5484. TestRecoveryManager fails wtih FileAlreadyExistsException. (Amar Kamat via hairong) HADOOP-5564. Limit the JVM heap size in the java command for initializing JAVA_PLATFORM. (Suresh Srinivas via szetszwo) HADOOP-5565. Add API for failing/finalized jobs to the JT metrics instrumentation. (Jerome Boulon via cdouglas) HADOOP-5390. Remove duplicate jars from tarball, src from binary tarball added by hdfsproxy. (Zhiyong Zhang via cdouglas) HADOOP-5066. Building binary tarball should not build docs/javadocs, copy src, or run jdiff. (Giridharan Kesavan via cdouglas) HADOOP-5459. Fix undetected CRC errors where intermediate output is closed before it has been completely consumed. (cdouglas) HADOOP-5571. Remove widening primitive conversion in TupleWritable mask manipulation. (Jingkei Ly via cdouglas) HADOOP-5588. Remove an unnecessary call to listStatus(..) in FileSystem.globStatusInternal(..). (Hairong Kuang via szetszwo) HADOOP-5473. Solves a race condition in killing a task - the state is KILLED if there is a user request pending to kill the task and the TT reported the state as SUCCESS. (Amareshwari Sriramadasu via ddas) HADOOP-5576. Fix LocalRunner to work with the new context object API in mapreduce. (Tom White via omalley) HADOOP-4374. Installs a shutdown hook in the Task JVM so that log.index is updated before the JVM exits. Also makes the update to log.index atomic. (Ravi Gummadi via ddas) HADOOP-5577. Add a verbose flag to mapreduce.Job.waitForCompletion to get the running job's information printed to the user's stdout as it runs. (omalley) HADOOP-5607. Fix NPE in TestCapacityScheduler. (cdouglas) HADOOP-5605. All the replicas incorrectly got marked as corrupt. (hairong) HADOOP-5337. JobTracker, upon restart, now waits for the TaskTrackers to join back before scheduling new tasks. This fixes race conditions associated with greedy scheduling as was the case earlier. (Amar Kamat via ddas) HADOOP-5227. Fix distcp so -update and -delete can be meaningfully combined. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-5305. Increase number of files and print debug messages in TestCopyFiles. (szetszwo) HADOOP-5548. Add synchronization for JobTracker methods in RecoveryManager. (Amareshwari Sriramadasu via sharad) HADOOP-3810. NameNode seems unstable on a cluster with little space left. (hairong) HADOOP-5068. Fix NPE in TestCapacityScheduler. (Vinod Kumar Vavilapalli via szetszwo) HADOOP-5585. Clear FileSystem statistics between tasks when jvm-reuse is enabled. (omalley) HADOOP-5394. JobTracker might schedule 2 attempts of the same task with the same attempt id across restarts. (Amar Kamat via sharad) HADOOP-5645. After HADOOP-4920 we need a place to checkin releasenotes.html. (nigel) Release 0.19.2 - 2009-06-30 BUG FIXES HADOOP-5154. Fixes a deadlock in the fairshare scheduler. (Matei Zaharia via yhemanth) HADOOP-5146. Fixes a race condition that causes LocalDirAllocator to miss files. (Devaraj Das via yhemanth) HADOOP-4638. Fixes job recovery to not crash the job tracker for problems with a single job file. (Amar Kamat via yhemanth) HADOOP-5384. Fix a problem that DataNodeCluster creates blocks with generationStamp == 1. (szetszwo) HADOOP-5376. Fixes the code handling lost tasktrackers to set the task state to KILLED_UNCLEAN only for relevant type of tasks. (Amareshwari Sriramadasu via yhemanth) HADOOP-5285. Fixes the issues - (1) obtainTaskCleanupTask checks whether job is inited before trying to lock the JobInProgress (2) Moves the CleanupQueue class outside the TaskTracker and makes it a generic class that is used by the JobTracker also for deleting the paths on the job's output fs. (3) Moves the references to completedJobStore outside the block where the JobTracker is locked. (ddas) HADOOP-5392. Fixes a problem to do with JT crashing during recovery when the job files are garbled. (Amar Kamat via ddas) HADOOP-5332. Appending to files is not allowed (by default) unless dfs.support.append is set to true. (dhruba) HADOOP-5333. libhdfs supports appending to files. (dhruba) HADOOP-3998. Fix dfsclient exception when JVM is shutdown. (dhruba) HADOOP-5440. Fixes a problem to do with removing a taskId from the list of taskIds that the TaskTracker's TaskMemoryManager manages. (Amareshwari Sriramadasu via ddas) HADOOP-5446. Restore TaskTracker metrics. (cdouglas) HADOOP-5449. Fixes the history cleaner thread. (Amareshwari Sriramadasu via ddas) HADOOP-5479. NameNode should not send empty block replication request to DataNode. (hairong) HADOOP-5259. Job with output hdfs:/user//outputpath (no authority) fails with Wrong FS. (Doug Cutting via hairong) HADOOP-5522. Documents the setup/cleanup tasks in the mapred tutorial. (Amareshwari Sriramadasu via ddas) HADOOP-5549. ReplicationMonitor should schedule both replication and deletion work in one iteration. (hairong) HADOOP-5554. DataNodeCluster and CreateEditsLog should create blocks with the same generation stamp value. (hairong via szetszwo) HADOOP-5231. Clones the TaskStatus before passing it to the JobInProgress. (Amareshwari Sriramadasu via ddas) HADOOP-4719. Fix documentation of 'ls' format for FsShell. (Ravi Phulari via cdouglas) HADOOP-5374. Fixes a NPE problem in getTasksToSave method. (Amareshwari Sriramadasu via ddas) HADOOP-4780. Cache the size of directories in DistributedCache, avoiding long delays in recalculating it. (He Yongqiang via cdouglas) HADOOP-5551. Prevent directory destruction on file create. (Brian Bockelman via shv) HADOOP-5671. Fix FNF exceptions when copying from old versions of HftpFileSystem. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-5213. Fix Null pointer exception caused when bzip2compression was used and user closed a output stream without writing any data. (Zheng Shao via dhruba) HADOOP-5579. Set errno correctly in libhdfs for permission, quota, and FNF conditions. (Brian Bockelman via cdouglas) HADOOP-5816. Fixes a problem in the KeyFieldBasedComparator to do with ArrayIndexOutOfBounds exception. (He Yongqiang via ddas) HADOOP-5951. Add Apache license header to StorageInfo.java. (Suresh Srinivas via szetszwo) Release 0.19.1 - 2009-02-23 IMPROVEMENTS HADOOP-4739. Fix spelling and grammar, improve phrasing of some sections in mapred tutorial. (Vivek Ratan via cdouglas) HADOOP-3894. DFSClient logging improvements. (Steve Loughran via shv) HADOOP-5126. Remove empty file BlocksWithLocations.java (shv) HADOOP-5127. Remove public methods in FSDirectory. (Jakob Homan via shv) BUG FIXES HADOOP-4697. Fix getBlockLocations in KosmosFileSystem to handle multiple blocks correctly. (Sriram Rao via cdouglas) HADOOP-4420. Add null checks for job, caused by invalid job IDs. (Aaron Kimball via tomwhite) HADOOP-4632. Fix TestJobHistoryVersion to use test.build.dir instead of the current workding directory for scratch space. (Amar Kamat via cdouglas) HADOOP-4508. Fix FSDataOutputStream.getPos() for append. (dhruba via szetszwo) HADOOP-4727. Fix a group checking bug in fill_stat_structure(...) in fuse-dfs. (Brian Bockelman via szetszwo) HADOOP-4836. Correct typos in mapred related documentation. (Jord? Polo via szetszwo) HADOOP-4821. Usage description in the Quotas guide documentations are incorrect. (Boris Shkolnik via hairong) HADOOP-4847. Moves the loading of OutputCommitter to the Task. (Amareshwari Sriramadasu via ddas) HADOOP-4966. Marks completed setup tasks for removal. (Amareshwari Sriramadasu via ddas) HADOOP-4982. TestFsck should run in Eclipse. (shv) HADOOP-5008. TestReplication#testPendingReplicationRetry leaves an opened fd unclosed. (hairong) HADOOP-4906. Fix TaskTracker OOM by keeping a shallow copy of JobConf in TaskTracker.TaskInProgress. (Sharad Agarwal via acmurthy) HADOOP-4918. Fix bzip2 compression to work with Sequence Files. (Zheng Shao via dhruba). HADOOP-4965. TestFileAppend3 should close FileSystem. (shv) HADOOP-4967. Fixes a race condition in the JvmManager to do with killing tasks. (ddas) HADOOP-5009. DataNode#shutdown sometimes leaves data block scanner verification log unclosed. (hairong) HADOOP-5086. Use the appropriate FileSystem for trash URIs. (cdouglas) HADOOP-4955. Make DBOutputFormat us column names from setOutput(). (Kevin Peterson via enis) HADOOP-4862. Minor : HADOOP-3678 did not remove all the cases of spurious IOExceptions logged by DataNode. (Raghu Angadi) HADOOP-5034. NameNode should send both replication and deletion requests to DataNode in one reply to a heartbeat. (hairong) HADOOP-4759. Removes temporary output directory for failed and killed tasks by launching special CLEANUP tasks for the same. (Amareshwari Sriramadasu via ddas) HADOOP-5161. Accepted sockets do not get placed in DataXceiverServer#childSockets. (hairong) HADOOP-5193. Correct calculation of edits modification time. (shv) HADOOP-4494. Allow libhdfs to append to files. (Pete Wyckoff via dhruba) HADOOP-5166. Fix JobTracker restart to work when ACLs are configured for the JobTracker. (Amar Kamat via yhemanth). HADOOP-5067. Fixes TaskInProgress.java to keep track of count of failed and killed tasks correctly. (Amareshwari Sriramadasu via ddas) HADOOP-4760. HDFS streams should not throw exceptions when closed twice. (enis) Release 0.19.0 - 2008-11-18 INCOMPATIBLE CHANGES HADOOP-3595. Remove deprecated methods for mapred.combine.once functionality, which was necessary to providing backwards compatible combiner semantics for 0.18. (cdouglas via omalley) HADOOP-3667. Remove the following deprecated methods from JobConf: addInputPath(Path) getInputPaths() getMapOutputCompressionType() getOutputPath() getSystemDir() setInputPath(Path) setMapOutputCompressionType(CompressionType style) setOutputPath(Path) (Amareshwari Sriramadasu via omalley) HADOOP-3652. Remove deprecated class OutputFormatBase. (Amareshwari Sriramadasu via cdouglas) HADOOP-2885. Break the hadoop.dfs package into separate packages under hadoop.hdfs that reflect whether they are client, server, protocol, etc. DistributedFileSystem and DFSClient have moved and are now considered package private. (Sanjay Radia via omalley) HADOOP-2325. Require Java 6. (cutting) HADOOP-372. Add support for multiple input paths with a different InputFormat and Mapper for each path. (Chris Smith via tomwhite) HADOOP-1700. Support appending to file in HDFS. (dhruba) HADOOP-3792. Make FsShell -test consistent with unix semantics, returning zero for true and non-zero for false. (Ben Slusky via cdouglas) HADOOP-3664. Remove the deprecated method InputFormat.validateInput, which is no longer needed. (tomwhite via omalley) HADOOP-3549. Give more meaningful errno's in libhdfs. In particular, EACCES is returned for permission problems. (Ben Slusky via omalley) HADOOP-4036. ResourceStatus was added to TaskTrackerStatus by HADOOP-3759, so increment the InterTrackerProtocol version. (Hemanth Yamijala via omalley) HADOOP-3150. Moves task promotion to tasks. Defines a new interface for committing output files. Moves job setup to jobclient, and moves jobcleanup to a separate task. (Amareshwari Sriramadasu via ddas) HADOOP-3446. Keep map outputs in memory during the reduce. Remove fs.inmemory.size.mb and replace with properties defining in memory map output retention during the shuffle and reduce relative to maximum heap usage. (cdouglas) HADOOP-3245. Adds the feature for supporting JobTracker restart. Running jobs can be recovered from the history file. The history file format has been modified to support recovery. The task attempt ID now has the JobTracker start time to disinguish attempts of the same TIP across restarts. (Amar Ramesh Kamat via ddas) HADOOP-4007. REMOVE DFSFileInfo - FileStatus is sufficient. (Sanjay Radia via hairong) HADOOP-3722. Fixed Hadoop Streaming and Hadoop Pipes to use the Tool interface and GenericOptionsParser. (Enis Soztutar via acmurthy) HADOOP-2816. Cluster summary at name node web reports the space utilization as: Configured Capacity: capacity of all the data directories - Reserved space Present Capacity: Space available for dfs,i.e. remaining+used space DFS Used%: DFS used space/Present Capacity (Suresh Srinivas via hairong) HADOOP-3938. Disk space quotas for HDFS. This is similar to namespace quotas in 0.18. (rangadi) HADOOP-4293. Make Configuration Writable and remove unreleased WritableJobConf. Configuration.write is renamed to writeXml. (omalley) HADOOP-4281. Change dfsadmin to report available disk space in a format consistent with the web interface as defined in HADOOP-2816. (Suresh Srinivas via cdouglas) HADOOP-4430. Further change the cluster summary at name node web that was changed in HADOOP-2816: Non DFS Used - This indicates the disk space taken by non DFS file from the Configured capacity DFS Used % - DFS Used % of Configured Capacity DFS Remaining % - Remaing % Configured Capacity available for DFS use DFS command line report reflects the same change. Config parameter dfs.datanode.du.pct is no longer used and is removed from the hadoop-default.xml. (Suresh Srinivas via hairong) HADOOP-4116. Balancer should provide better resource management. (hairong) HADOOP-4599. BlocksMap and BlockInfo made package private. (shv) NEW FEATURES HADOOP-3341. Allow streaming jobs to specify the field separator for map and reduce input and output. The new configuration values are: stream.map.input.field.separator stream.map.output.field.separator stream.reduce.input.field.separator stream.reduce.output.field.separator All of them default to "\t". (Zheng Shao via omalley) HADOOP-3479. Defines the configuration file for the resource manager in Hadoop. You can configure various parameters related to scheduling, such as queues and queue properties here. The properties for a queue follow a naming convention,such as, hadoop.rm.queue.queue-name.property-name. (Hemanth Yamijala via ddas) HADOOP-3149. Adds a way in which map/reducetasks can create multiple outputs. (Alejandro Abdelnur via ddas) HADOOP-3714. Add a new contrib, bash-tab-completion, which enables bash tab completion for the bin/hadoop script. See the README file in the contrib directory for the installation. (Chris Smith via enis) HADOOP-3730. Adds a new JobConf constructor that disables loading default configurations. (Alejandro Abdelnur via ddas) HADOOP-3772. Add a new Hadoop Instrumentation api for the JobTracker and the TaskTracker, refactor Hadoop Metrics as an implementation of the api. (Ari Rabkin via acmurthy) HADOOP-2302. Provides a comparator for numerical sorting of key fields. (ddas) HADOOP-153. Provides a way to skip bad records. (Sharad Agarwal via ddas) HADOOP-657. Free disk space should be modelled and used by the scheduler to make scheduling decisions. (Ari Rabkin via omalley) HADOOP-3719. Initial checkin of Chukwa, which is a data collection and analysis framework. (Jerome Boulon, Andy Konwinski, Ari Rabkin, and Eric Yang) HADOOP-3873. Add -filelimit and -sizelimit options to distcp to cap the number of files/bytes copied in a particular run to support incremental updates and mirroring. (TszWo (Nicholas), SZE via cdouglas) HADOOP-3585. FailMon package for hardware failure monitoring and analysis of anomalies. (Ioannis Koltsidas via dhruba) HADOOP-1480. Add counters to the C++ Pipes API. (acmurthy via omalley) HADOOP-3854. Add support for pluggable servlet filters in the HttpServers. (Tsz Wo (Nicholas) Sze via omalley) HADOOP-3759. Provides ability to run memory intensive jobs without affecting other running tasks on the nodes. (Hemanth Yamijala via ddas) HADOOP-3746. Add a fair share scheduler. (Matei Zaharia via omalley) HADOOP-3754. Add a thrift interface to access HDFS. (dhruba via omalley) HADOOP-3828. Provides a way to write skipped records to DFS. (Sharad Agarwal via ddas) HADOOP-3948. Separate name-node edits and fsimage directories. (Lohit Vijayarenu via shv) HADOOP-3939. Add an option to DistCp to delete files at the destination not present at the source. (Tsz Wo (Nicholas) Sze via cdouglas) HADOOP-3601. Add a new contrib module for Hive, which is a sql-like query processing tool that uses map/reduce. (Ashish Thusoo via omalley) HADOOP-3866. Added sort and multi-job updates in the JobTracker web ui. (Craig Weisenfluh via omalley) HADOOP-3698. Add access control to control who is allowed to submit or modify jobs in the JobTracker. (Hemanth Yamijala via omalley) HADOOP-1869. Support access times for HDFS files. (dhruba) HADOOP-3941. Extend FileSystem API to return file-checksums. (szetszwo) HADOOP-3581. Prevents memory intensive user tasks from taking down nodes. (Vinod K V via ddas) HADOOP-3970. Provides a way to recover counters written to JobHistory. (Amar Kamat via ddas) HADOOP-3702. Adds ChainMapper and ChainReducer classes allow composing chains of Maps and Reduces in a single Map/Reduce job, something like MAP+ / REDUCE MAP*. (Alejandro Abdelnur via ddas) HADOOP-3445. Add capacity scheduler that provides guaranteed capacities to queues as a percentage of the cluster. (Vivek Ratan via omalley) HADOOP-3992. Add a synthetic load generation facility to the test directory. (hairong via szetszwo) HADOOP-3981. Implement a distributed file checksum algorithm in HDFS and change DistCp to use file checksum for comparing src and dst files (szetszwo) HADOOP-3829. Narrown down skipped records based on user acceptable value. (Sharad Agarwal via ddas) HADOOP-3930. Add common interfaces for the pluggable schedulers and the cli & gui clients. (Sreekanth Ramakrishnan via omalley) HADOOP-4176. Implement getFileChecksum(Path) in HftpFileSystem. (szetszwo) HADOOP-249. Reuse JVMs across Map-Reduce Tasks. Configuration changes to hadoop-default.xml: add mapred.job.reuse.jvm.num.tasks (Devaraj Das via acmurthy) HADOOP-4070. Provide a mechanism in Hive for registering UDFs from the query language. (tomwhite) HADOOP-2536. Implement a JDBC based database input and output formats to allow Map-Reduce applications to work with databases. (Fredrik Hedberg and Enis Soztutar via acmurthy) HADOOP-3019. A new library to support total order partitions. (cdouglas via omalley) HADOOP-3924. Added a 'KILLED' job status. (Subramaniam Krishnan via acmurthy) IMPROVEMENTS HADOOP-4205. hive: metastore and ql to use the refactored SerDe library. (zshao) HADOOP-4106. libhdfs: add time, permission and user attribute support (part 2). (Pete Wyckoff through zshao) HADOOP-4104. libhdfs: add time, permission and user attribute support. (Pete Wyckoff through zshao) HADOOP-3908. libhdfs: better error message if llibhdfs.so doesn't exist. (Pete Wyckoff through zshao) HADOOP-3732. Delay intialization of datanode block verification till the verification thread is started. (rangadi) HADOOP-1627. Various small improvements to 'dfsadmin -report' output. (rangadi) HADOOP-3577. Tools to inject blocks into name node and simulated data nodes for testing. (Sanjay Radia via hairong) HADOOP-2664. Add a lzop compatible codec, so that files compressed by lzop may be processed by map/reduce. (cdouglas via omalley) HADOOP-3655. Add additional ant properties to control junit. (Steve Loughran via omalley) HADOOP-3543. Update the copyright year to 2008. (cdouglas via omalley) HADOOP-3587. Add a unit test for the contrib/data_join framework. (cdouglas) HADOOP-3402. Add terasort example program (omalley) HADOOP-3660. Add replication factor for injecting blocks in simulated datanodes. (Sanjay Radia via cdouglas) HADOOP-3684. Add a cloning function to the contrib/data_join framework permitting users to define a more efficient method for cloning values from the reduce than serialization/deserialization. (Runping Qi via cdouglas) HADOOP-3478. Improves the handling of map output fetching. Now the randomization is by the hosts (and not the map outputs themselves). (Jothi Padmanabhan via ddas) HADOOP-3617. Removed redundant checks of accounting space in MapTask and makes the spill thread persistent so as to avoid creating a new one for each spill. (Chris Douglas via acmurthy) HADOOP-3412. Factor the scheduler out of the JobTracker and make it pluggable. (Tom White and Brice Arnould via omalley) HADOOP-3756. Minor. Remove unused dfs.client.buffer.dir from hadoop-default.xml. (rangadi) HADOOP-3747. Adds counter suport for MultipleOutputs. (Alejandro Abdelnur via ddas) HADOOP-3169. LeaseChecker daemon should not be started in DFSClient constructor. (TszWo (Nicholas), SZE via hairong) HADOOP-3824. Move base functionality of StatusHttpServer to a core package. (TszWo (Nicholas), SZE via cdouglas) HADOOP-3646. Add a bzip2 compatible codec, so bzip compressed data may be processed by map/reduce. (Abdul Qadeer via cdouglas) HADOOP-3861. MapFile.Reader and Writer should implement Closeable. (tomwhite via omalley) HADOOP-3791. Introduce generics into ReflectionUtils. (Chris Smith via cdouglas) HADOOP-3694. Improve unit test performance by changing MiniDFSCluster to listen only on 127.0.0.1. (cutting) HADOOP-3620. Namenode should synchronously resolve a datanode's network location when the datanode registers. (hairong) HADOOP-3860. NNThroughputBenchmark is extended with rename and delete benchmarks. (shv) HADOOP-3892. Include unix group name in JobConf. (Matei Zaharia via johan) HADOOP-3875. Change the time period between heartbeats to be relative to the end of the heartbeat rpc, rather than the start. This causes better behavior if the JobTracker is overloaded. (acmurthy via omalley) HADOOP-3853. Move multiple input format (HADOOP-372) extension to library package. (tomwhite via johan) HADOOP-9. Use roulette scheduling for temporary space when the size is not known. (Ari Rabkin via omalley) HADOOP-3202. Use recursive delete rather than FileUtil.fullyDelete. (Amareshwari Sriramadasu via omalley) HADOOP-3368. Remove common-logging.properties from conf. (Steve Loughran via omalley) HADOOP-3851. Fix spelling mistake in FSNamesystemMetrics. (Steve Loughran via omalley) HADOOP-3780. Remove asynchronous resolution of network topology in the JobTracker (Amar Kamat via omalley) HADOOP-3852. Add ShellCommandExecutor.toString method to make nicer error messages. (Steve Loughran via omalley) HADOOP-3844. Include message of local exception in RPC client failures. (Steve Loughran via omalley) HADOOP-3935. Split out inner classes from DataNode.java. (johan) HADOOP-3905. Create generic interfaces for edit log streams. (shv) HADOOP-3062. Add metrics to DataNode and TaskTracker to record network traffic for HDFS reads/writes and MR shuffling. (cdouglas) HADOOP-3742. Remove HDFS from public java doc and add javadoc-dev for generative javadoc for developers. (Sanjay Radia via omalley) HADOOP-3944. Improve documentation for public TupleWritable class in join package. (Chris Douglas via enis) HADOOP-2330. Preallocate HDFS transaction log to improve performance. (dhruba and hairong) HADOOP-3965. Convert DataBlockScanner into a package private class. (shv) HADOOP-3488. Prevent hadoop-daemon from rsync'ing log files (Stefan Groshupf and Craig Macdonald via omalley) HADOOP-3342. Change the kill task actions to require http post instead of get to prevent accidental crawls from triggering it. (enis via omalley) HADOOP-3937. Limit the job name in the job history filename to 50 characters. (Matei Zaharia via omalley) HADOOP-3943. Remove unnecessary synchronization in NetworkTopology.pseudoSortByDistance. (hairong via omalley) HADOOP-3498. File globbing alternation should be able to span path components. (tomwhite) HADOOP-3361. Implement renames for NativeS3FileSystem. (Albert Chern via tomwhite) HADOOP-3605. Make EC2 scripts show an error message if AWS_ACCOUNT_ID is unset. (Al Hoang via tomwhite) HADOOP-4147. Remove unused class JobWithTaskContext from class JobInProgress. (Amareshwari Sriramadasu via johan) HADOOP-4151. Add a byte-comparable interface that both Text and BytesWritable implement. (cdouglas via omalley) HADOOP-4174. Move fs image/edit log methods from ClientProtocol to NamenodeProtocol. (shv via szetszwo) HADOOP-4181. Include a .gitignore and saveVersion.sh change to support developing under git. (omalley) HADOOP-4186. Factor LineReader out of LineRecordReader. (tomwhite via omalley) HADOOP-4184. Break the module dependencies between core, hdfs, and mapred. (tomwhite via omalley) HADOOP-4075. test-patch.sh now spits out ant commands that it runs. (Ramya R via nigel) HADOOP-4117. Improve configurability of Hadoop EC2 instances. (tomwhite) HADOOP-2411. Add support for larger CPU EC2 instance types. (Chris K Wensel via tomwhite) HADOOP-4083. Changed the configuration attribute queue.name to mapred.job.queue.name. (Hemanth Yamijala via acmurthy) HADOOP-4194. Added the JobConf and JobID to job-related methods in JobTrackerInstrumentation for better metrics. (Mac Yang via acmurthy) HADOOP-3975. Change test-patch script to report working the dir modifications preventing the suite from being run. (Ramya R via cdouglas) HADOOP-4124. Added a command-line switch to allow users to set job priorities, also allow it to be manipulated via the web-ui. (Hemanth Yamijala via acmurthy) HADOOP-2165. Augmented JobHistory to include the URIs to the tasks' userlogs. (Vinod Kumar Vavilapalli via acmurthy) HADOOP-4062. Remove the synchronization on the output stream when a connection is closed and also remove an undesirable exception when a client is stoped while there is no pending RPC request. (hairong) HADOOP-4227. Remove the deprecated class org.apache.hadoop.fs.ShellCommand. (szetszwo) HADOOP-4006. Clean up FSConstants and move some of the constants to better places. (Sanjay Radia via rangadi) HADOOP-4279. Trace the seeds of random sequences in append unit tests to make itermitant failures reproducible. (szetszwo via cdouglas) HADOOP-4209. Remove the change to the format of task attempt id by incrementing the task attempt numbers by 1000 when the job restarts. (Amar Kamat via omalley) HADOOP-4301. Adds forrest doc for the skip bad records feature. (Sharad Agarwal via ddas) HADOOP-4354. Separate TestDatanodeDeath.testDatanodeDeath() into 4 tests. (szetszwo) HADOOP-3790. Add more unit tests for testing HDFS file append. (szetszwo) HADOOP-4321. Include documentation for the capacity scheduler. (Hemanth Yamijala via omalley) HADOOP-4424. Change menu layout for Hadoop documentation (Boris Shkolnik via cdouglas). HADOOP-4438. Update forrest documentation to include missing FsShell commands. (Suresh Srinivas via cdouglas) HADOOP-4105. Add forrest documentation for libhdfs. (Pete Wyckoff via cutting) HADOOP-4510. Make getTaskOutputPath public. (Chris Wensel via omalley) OPTIMIZATIONS HADOOP-3556. Removed lock contention in MD5Hash by changing the singleton MessageDigester by an instance per Thread using ThreadLocal. (Iv?n de Prado via omalley) HADOOP-3328. When client is writing data to DFS, only the last datanode in the pipeline needs to verify the checksum. Saves around 30% CPU on intermediate datanodes. (rangadi) HADOOP-3863. Use a thread-local string encoder rather than a static one that is protected by a lock. (acmurthy via omalley) HADOOP-3864. Prevent the JobTracker from locking up when a job is being initialized. (acmurthy via omalley) HADOOP-3816. Faster directory listing in KFS. (Sriram Rao via omalley) HADOOP-2130. Pipes submit job should have both blocking and non-blocking versions. (acmurthy via omalley) HADOOP-3769. Make the SampleMapper and SampleReducer from GenericMRLoadGenerator public, so they can be used in other contexts. (Lingyun Yang via omalley) HADOOP-3514. Inline the CRCs in intermediate files as opposed to reading it from a different .crc file. (Jothi Padmanabhan via ddas) HADOOP-3638. Caches the iFile index files in memory to reduce seeks (Jothi Padmanabhan via ddas) HADOOP-4225. FSEditLog.logOpenFile() should persist accessTime rather than modificationTime. (shv) HADOOP-4380. Made several new classes (Child, JVMId, JobTrackerInstrumentation, QueueManager, ResourceEstimator, TaskTrackerInstrumentation, and TaskTrackerMetricsInst) in org.apache.hadoop.mapred package private instead of public. (omalley) BUG FIXES HADOOP-3563. Refactor the distributed upgrade code so that it is easier to identify datanode and namenode related code. (dhruba) HADOOP-3640. Fix the read method in the NativeS3InputStream. (tomwhite via omalley) HADOOP-3711. Fixes the Streaming input parsing to properly find the separator. (Amareshwari Sriramadasu via ddas) HADOOP-3725. Prevent TestMiniMRMapDebugScript from swallowing exceptions. (Steve Loughran via cdouglas) HADOOP-3726. Throw exceptions from TestCLI setup and teardown instead of swallowing them. (Steve Loughran via cdouglas) HADOOP-3721. Refactor CompositeRecordReader and related mapred.join classes to make them clearer. (cdouglas) HADOOP-3720. Re-read the config file when dfsadmin -refreshNodes is invoked so dfs.hosts and dfs.hosts.exclude are observed. (lohit vijayarenu via cdouglas) HADOOP-3485. Allow writing to files over fuse. (Pete Wyckoff via dhruba) HADOOP-3723. The flags to the libhdfs.create call can be treated as a bitmask. (Pete Wyckoff via dhruba) HADOOP-3643. Filter out completed tasks when asking for running tasks in the JobTracker web/ui. (Amar Kamat via omalley) HADOOP-3777. Ensure that Lzo compressors/decompressors correctly handle the case where native libraries aren't available. (Chris Douglas via acmurthy) HADOOP-3728. Fix SleepJob so that it doesn't depend on temporary files, this ensures we can now run more than one instance of SleepJob simultaneously. (Chris Douglas via acmurthy) HADOOP-3795. Fix saving image files on Namenode with different checkpoint stamps. (Lohit Vijayarenu via mahadev) HADOOP-3624. Improving createeditslog to create tree directory structure. (Lohit Vijayarenu via mahadev) HADOOP-3778. DFSInputStream.seek() did not retry in case of some errors. (Luo Ning via rangadi) HADOOP-3661. The handling of moving files deleted through fuse-dfs to Trash made similar to the behaviour from dfs shell. (Pete Wyckoff via dhruba) HADOOP-3819. Unset LANG and LC_CTYPE in saveVersion.sh to make it compatible with non-English locales. (Rong-En Fan via cdouglas) HADOOP-3848. Cache calls to getSystemDir in the TaskTracker instead of calling it for each task start. (acmurthy via omalley) HADOOP-3131. Fix reduce progress reporting for compressed intermediate data. (Matei Zaharia via acmurthy) HADOOP-3796. fuse-dfs configuration is implemented as file system mount options. (Pete Wyckoff via dhruba) HADOOP-3836. Fix TestMultipleOutputs to correctly clean up. (Alejandro Abdelnur via acmurthy) HADOOP-3805. Improve fuse-dfs write performance. (Pete Wyckoff via zshao) HADOOP-3846. Fix unit test CreateEditsLog to generate paths correctly. (Lohit Vjayarenu via cdouglas) HADOOP-3904. Fix unit tests using the old dfs package name. (TszWo (Nicholas), SZE via johan) HADOOP-3319. Fix some HOD error messages to go stderr instead of stdout. (Vinod Kumar Vavilapalli via omalley) HADOOP-3907. Move INodeDirectoryWithQuota to its own .java file. (Tsz Wo (Nicholas), SZE via hairong) HADOOP-3919. Fix attribute name in hadoop-default for mapred.jobtracker.instrumentation. (Ari Rabkin via omalley) HADOOP-3903. Change the package name for the servlets to be hdfs instead of dfs. (Tsz Wo (Nicholas) Sze via omalley) HADOOP-3773. Change Pipes to set the default map output key and value types correctly. (Koji Noguchi via omalley) HADOOP-3952. Fix compilation error in TestDataJoin referencing dfs package. (omalley) HADOOP-3951. Fix package name for FSNamesystem logs and modify other hard-coded Logs to use the class name. (cdouglas) HADOOP-3889. Improve error reporting from HftpFileSystem, handling in DistCp. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3946. Fix TestMapRed after hadoop-3664. (tomwhite via omalley) HADOOP-3949. Remove duplicate jars from Chukwa. (Jerome Boulon via omalley) HADOOP-3933. DataNode sometimes sends up to io.byte.per.checksum bytes more than required to client. (Ning Li via rangadi) HADOOP-3962. Shell command "fs -count" should support paths with different file systems. (Tsz Wo (Nicholas), SZE via mahadev) HADOOP-3957. Fix javac warnings in DistCp and TestCopyFiles. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3958. Fix TestMapRed to check the success of test-job. (omalley via acmurthy) HADOOP-3985. Fix TestHDFSServerPorts to use random ports. (Hairong Kuang via omalley) HADOOP-3964. Fix javadoc warnings introduced by FailMon. (dhruba) HADOOP-3785. Fix FileSystem cache to be case-insensitive for scheme and authority. (Bill de hOra via cdouglas) HADOOP-3506. Fix a rare NPE caused by error handling in S3. (Tom White via cdouglas) HADOOP-3705. Fix mapred.join parser to accept InputFormats named with underscore and static, inner classes. (cdouglas) HADOOP-4023. Fix javadoc warnings introduced when the HDFS javadoc was made private. (omalley) HADOOP-4030. Remove lzop from the default list of codecs. (Arun Murthy via cdouglas) HADOOP-3961. Fix task disk space requirement estimates for virtual input jobs. Delays limiting task placement until after 10% of the maps have finished. (Ari Rabkin via omalley) HADOOP-2168. Fix problem with C++ record reader's progress not being reported to framework. (acmurthy via omalley) HADOOP-3966. Copy findbugs generated output files to PATCH_DIR while running test-patch. (Ramya R via lohit) HADOOP-4037. Fix the eclipse plugin for versions of kfs and log4j. (nigel via omalley) HADOOP-3950. Cause the Mini MR cluster to wait for task trackers to register before continuing. (enis via omalley) HADOOP-3910. Remove unused ClusterTestDFSNamespaceLogging and ClusterTestDFS. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3954. Disable record skipping by default. (Sharad Agarwal via cdouglas) HADOOP-4050. Fix TestFairScheduler to use absolute paths for the work directory. (Matei Zaharia via omalley) HADOOP-4069. Keep temporary test files from TestKosmosFileSystem under test.build.data instead of /tmp. (lohit via omalley) HADOOP-4078. Create test files for TestKosmosFileSystem in separate directory under test.build.data. (lohit) HADOOP-3968. Fix getFileBlockLocations calls to use FileStatus instead of Path reflecting the new API. (Pete Wyckoff via lohit) HADOOP-3963. libhdfs does not exit on its own, instead it returns error to the caller and behaves as a true library. (Pete Wyckoff via dhruba) HADOOP-4100. Removes the cleanupTask scheduling from the Scheduler implementations and moves it to the JobTracker. (Amareshwari Sriramadasu via ddas) HADOOP-4097. Make hive work well with speculative execution turned on. (Joydeep Sen Sarma via dhruba) HADOOP-4113. Changes to libhdfs to not exit on its own, rather return an error code to the caller. (Pete Wyckoff via dhruba) HADOOP-4054. Remove duplicate lease removal during edit log loading. (hairong) HADOOP-4071. FSNameSystem.isReplicationInProgress should add an underReplicated block to the neededReplication queue using method "add" not "update". (hairong) HADOOP-4154. Fix type warnings in WritableUtils. (szetszwo via omalley) HADOOP-4133. Log files generated by Hive should reside in the build directory. (Prasad Chakka via dhruba) HADOOP-4094. Hive now has hive-default.xml and hive-site.xml similar to core hadoop. (Prasad Chakka via dhruba) HADOOP-4112. Handles cleanupTask in JobHistory (Amareshwari Sriramadasu via ddas) HADOOP-3831. Very slow reading clients sometimes failed while reading. (rangadi) HADOOP-4155. Use JobTracker's start time while initializing JobHistory's JobTracker Unique String. (lohit) HADOOP-4099. Fix null pointer when using HFTP from an 0.18 server. (dhruba via omalley) HADOOP-3570. Includes user specified libjar files in the client side classpath path. (Sharad Agarwal via ddas) HADOOP-4129. Changed memory limits of TaskTracker and Tasks to be in KiloBytes rather than bytes. (Vinod Kumar Vavilapalli via acmurthy) HADOOP-4139. Optimize Hive multi group-by. (Namin Jain via dhruba) HADOOP-3911. Add a check to fsck options to make sure -files is not the first option to resolve conflicts with GenericOptionsParser (lohit) HADOOP-3623. Refactor LeaseManager. (szetszwo) HADOOP-4125. Handles Reduce cleanup tip on the web ui. (Amareshwari Sriramadasu via ddas) HADOOP-4087. Hive Metastore API for php and python clients. (Prasad Chakka via dhruba) HADOOP-4197. Update DATA_TRANSFER_VERSION for HADOOP-3981. (szetszwo) HADOOP-4138. Refactor the Hive SerDe library to better structure the interfaces to the serializer and de-serializer. (Zheng Shao via dhruba) HADOOP-4195. Close compressor before returning to codec pool. (acmurthy via omalley) HADOOP-2403. Escapes some special characters before logging to history files. (Amareshwari Sriramadasu via ddas) HADOOP-4200. Fix a bug in the test-patch.sh script. (Ramya R via nigel) HADOOP-4084. Add explain plan capabilities to Hive Query Language. (Ashish Thusoo via dhruba) HADOOP-4121. Preserve cause for exception if the initialization of HistoryViewer for JobHistory fails. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-4213. Fixes NPE in TestLimitTasksPerJobTaskScheduler. (Sreekanth Ramakrishnan via ddas) HADOOP-4077. Setting access and modification time for a file requires write permissions on the file. (dhruba) HADOOP-3592. Fix a couple of possible file leaks in FileUtil (Bill de hOra via rangadi) HADOOP-4120. Hive interactive shell records the time taken by a query. (Raghotham Murthy via dhruba) HADOOP-4090. The hive scripts pick up hadoop from HADOOP_HOME and then the path. (Raghotham Murthy via dhruba) HADOOP-4242. Remove extra ";" in FSDirectory that blocks compilation in some IDE's. (szetszwo via omalley) HADOOP-4249. Fix eclipse path to include the hsqldb.jar. (szetszwo via omalley) HADOOP-4247. Move InputSampler into org.apache.hadoop.mapred.lib, so that examples.jar doesn't depend on tools.jar. (omalley) HADOOP-4269. Fix the deprecation of LineReader by extending the new class into the old name and deprecating it. Also update the tests to test the new class. (cdouglas via omalley) HADOOP-4280. Fix conversions between seconds in C and milliseconds in Java for access times for files. (Pete Wyckoff via rangadi) HADOOP-4254. -setSpaceQuota command does not convert "TB" extenstion to terabytes properly. Implementation now uses StringUtils for parsing this. (Raghu Angadi) HADOOP-4259. Findbugs should run over tools.jar also. (cdouglas via omalley) HADOOP-4275. Move public method isJobValidName from JobID to a private method in JobTracker. (omalley) HADOOP-4173. fix failures in TestProcfsBasedProcessTree and TestTaskTrackerMemoryManager tests. ProcfsBasedProcessTree and memory management in TaskTracker are disabled on Windows. (Vinod K V via rangadi) HADOOP-4189. Fixes the history blocksize & intertracker protocol version issues introduced as part of HADOOP-3245. (Amar Kamat via ddas) HADOOP-4190. Fixes the backward compatibility issue with Job History. introduced by HADOOP-3245 and HADOOP-2403. (Amar Kamat via ddas) HADOOP-4237. Fixes the TestStreamingBadRecords.testNarrowDown testcase. (Sharad Agarwal via ddas) HADOOP-4274. Capacity scheduler accidently modifies the underlying data structures when browing the job lists. (Hemanth Yamijala via omalley) HADOOP-4309. Fix eclipse-plugin compilation. (cdouglas) HADOOP-4232. Fix race condition in JVM reuse when multiple slots become free. (ddas via acmurthy) HADOOP-4302. Fix a race condition in TestReduceFetch that can yield false negatvies. (cdouglas) HADOOP-3942. Update distcp documentation to include features introduced in HADOOP-3873, HADOOP-3939. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-4319. fuse-dfs dfs_read function returns as many bytes as it is told to read unlesss end-of-file is reached. (Pete Wyckoff via dhruba) HADOOP-4246. Ensure we have the correct lower bound on the number of retries for fetching map-outputs; also fixed the case where the reducer automatically kills on too many unique map-outputs could not be fetched for small jobs. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-4163. Report FSErrors from map output fetch threads instead of merely logging them. (Sharad Agarwal via cdouglas) HADOOP-4261. Adds a setup task for jobs. This is required so that we don't setup jobs that haven't been inited yet (since init could lead to job failure). Only after the init has successfully happened do we launch the setupJob task. (Amareshwari Sriramadasu via ddas) HADOOP-4256. Removes Completed and Failed Job tables from jobqueue_details.jsp. (Sreekanth Ramakrishnan via ddas) HADOOP-4267. Occasional exceptions during shutting down HSQLDB is logged but not rethrown. (enis) HADOOP-4018. The number of tasks for a single job cannot exceed a pre-configured maximum value. (dhruba) HADOOP-4288. Fixes a NPE problem in CapacityScheduler. (Amar Kamat via ddas) HADOOP-4014. Create hard links with 'fsutil hardlink' on Windows. (shv) HADOOP-4393. Merged org.apache.hadoop.fs.permission.AccessControlException and org.apache.hadoop.security.AccessControlIOException into a single class hadoop.security.AccessControlException. (omalley via acmurthy) HADOOP-4287. Fixes an issue to do with maintaining counts of running/pending maps/reduces. (Sreekanth Ramakrishnan via ddas) HADOOP-4361. Makes sure that jobs killed from command line are killed fast (i.e., there is a slot to run the cleanup task soon). (Amareshwari Sriramadasu via ddas) HADOOP-4400. Add "hdfs://" to fs.default.name on quickstart.html. (Jeff Hammerbacher via omalley) HADOOP-4378. Fix TestJobQueueInformation to use SleepJob rather than WordCount via TestMiniMRWithDFS. (Sreekanth Ramakrishnan via acmurthy) HADOOP-4376. Fix formatting in hadoop-default.xml for hadoop.http.filter.initializers. (Enis Soztutar via acmurthy) HADOOP-4410. Adds an extra arg to the API FileUtil.makeShellPath to determine whether to canonicalize file paths or not. (Amareshwari Sriramadasu via ddas) HADOOP-4236. Ensure un-initialized jobs are killed correctly on user-demand. (Sharad Agarwal via acmurthy) HADOOP-4373. Fix calculation of Guaranteed Capacity for the capacity-scheduler. (Hemanth Yamijala via acmurthy) HADOOP-4053. Schedulers must be notified when jobs complete. (Amar Kamat via omalley) HADOOP-4335. Fix FsShell -ls for filesystems without owners/groups. (David Phillips via cdouglas) HADOOP-4426. TestCapacityScheduler broke due to the two commits HADOOP-4053 and HADOOP-4373. This patch fixes that. (Hemanth Yamijala via ddas) HADOOP-4418. Updates documentation in forrest for Mapred, streaming and pipes. (Amareshwari Sriramadasu via ddas) HADOOP-3155. Ensure that there is only one thread fetching TaskCompletionEvents on TaskTracker re-init. (Dhruba Borthakur via acmurthy) HADOOP-4425. Fix EditLogInputStream to overload the bulk read method. (cdouglas) HADOOP-4427. Adds the new queue/job commands to the manual. (Sreekanth Ramakrishnan via ddas) HADOOP-4278. Increase debug logging for unit test TestDatanodeDeath. Fix the case when primary is dead. (dhruba via szetszwo) HADOOP-4423. Keep block length when the block recovery is triggered by append. (szetszwo) HADOOP-4449. Fix dfsadmin usage. (Raghu Angadi via cdouglas) HADOOP-4455. Added TestSerDe so that unit tests can run successfully. (Ashish Thusoo via dhruba) HADOOP-4457. Fixes an input split logging problem introduced by HADOOP-3245. (Amareshwari Sriramadasu via ddas) HADOOP-4464. Separate out TestFileCreationClient from TestFileCreation. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-4404. saveFSImage() removes files from a storage directory that do not correspond to its type. (shv) HADOOP-4149. Fix handling of updates to the job priority, by changing the list of jobs to be keyed by the priority, submit time, and job tracker id. (Amar Kamat via omalley) HADOOP-4296. Fix job client failures by not retiring a job as soon as it is finished. (dhruba) HADOOP-4439. Remove configuration variables that aren't usable yet, in particular mapred.tasktracker.tasks.maxmemory and mapred.task.max.memory. (Hemanth Yamijala via omalley) HADOOP-4230. Fix for serde2 interface, limit operator, select * operator, UDF trim functions and sampling. (Ashish Thusoo via dhruba) HADOOP-4358. No need to truncate access time in INode. Also fixes NPE in CreateEditsLog. (Raghu Angadi) HADOOP-4387. TestHDFSFileSystemContract fails on windows nightly builds. (Raghu Angadi) HADOOP-4466. Ensure that SequenceFileOutputFormat isn't tied to Writables and can be used with other Serialization frameworks. (Chris Wensel via acmurthy) HADOOP-4525. Fix ipc.server.ipcnodelay originally missed in in HADOOP-2232. (cdouglas via Clint Morgan) HADOOP-4498. Ensure that JobHistory correctly escapes the job name so that regex patterns work. (Chris Wensel via acmurthy) HADOOP-4446. Modify guaranteed capacity labels in capacity scheduler's UI to reflect the information being displayed. (Sreekanth Ramakrishnan via yhemanth) HADOOP-4282. Some user facing URLs are not filtered by user filters. (szetszwo) HADOOP-4595. Fixes two race conditions - one to do with updating free slot count, and another to do with starting the MapEventsFetcher thread. (ddas) HADOOP-4552. Fix a deadlock in RPC server. (Raghu Angadi) HADOOP-4471. Sort running jobs by priority in the capacity scheduler. (Amar Kamat via yhemanth) HADOOP-4500. Fix MultiFileSplit to get the FileSystem from the relevant path rather than the JobClient. (Joydeep Sen Sarma via cdouglas) Release 0.18.4 - Unreleased BUG FIXES HADOOP-5114. Remove timeout for accept() in DataNode. This makes accept() fail in JDK on Windows and causes many tests to fail. (Raghu Angadi) HADOOP-5192. Block receiver should not remove a block that's created or being written by other threads. (hairong) HADOOP-5134. FSNamesystem#commitBlockSynchronization adds under-construction block locations to blocksMap. (Dhruba Borthakur via hairong) HADOOP-5412. Simulated DataNode should not write to a block that's being written by another thread. (hairong) HADOOP-5465. Fix the problem of blocks remaining under-replicated by providing synchronized modification to the counter xmitsInProgress in DataNode. (hairong) HADOOP-5557. Fixes some minor problems in TestOverReplicatedBlocks. (szetszwo) HADOOP-5644. Namenode is stuck in safe mode. (suresh Srinivas via hairong) HADOOP-6017. Lease Manager in NameNode does not handle certain characters in filenames. This results in fatal errors in Secondary NameNode and while restrating NameNode. (Tsz Wo (Nicholas), SZE via rangadi) Release 0.18.3 - 2009-01-27 IMPROVEMENTS HADOOP-4150. Include librecordio in hadoop releases. (Giridharan Kesavan via acmurthy) HADOOP-4668. Improve documentation for setCombinerClass to clarify the restrictions on combiners. (omalley) BUG FIXES HADOOP-4499. DFSClient should invoke checksumOk only once. (Raghu Angadi) HADOOP-4597. Calculate mis-replicated blocks when safe-mode is turned off manually. (shv) HADOOP-3121. lsr should keep listing the remaining items but not terminate if there is any IOException. (szetszwo) HADOOP-4610. Always calculate mis-replicated blocks when safe-mode is turned off. (shv) HADOOP-3883. Limit namenode to assign at most one generation stamp for a particular block within a short period. (szetszwo) HADOOP-4556. Block went missing. (hairong) HADOOP-4643. NameNode should exclude excessive replicas when counting live replicas for a block. (hairong) HADOOP-4703. Should not wait for proxy forever in lease recovering. (szetszwo) HADOOP-4647. NamenodeFsck should close the DFSClient it has created. (szetszwo) HADOOP-4616. Fuse-dfs can handle bad values from FileSystem.read call. (Pete Wyckoff via dhruba) HADOOP-4061. Throttle Datanode decommission monitoring in Namenode. (szetszwo) HADOOP-4659. Root cause of connection failure is being lost to code that uses it for delaying startup. (Steve Loughran and Hairong via hairong) HADOOP-4614. Lazily open segments when merging map spills to avoid using too many file descriptors. (Yuri Pradkin via cdouglas) HADOOP-4257. The DFS client should pick only one datanode as the candidate to initiate lease recovery. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-4713. Fix librecordio to handle records larger than 64k. (Christian Kunz via cdouglas) HADOOP-4635. Fix a memory leak in fuse dfs. (pete wyckoff via mahadev) HADOOP-4714. Report status between merges and make the number of records between progress reports configurable. (Jothi Padmanabhan via cdouglas) HADOOP-4726. Fix documentation typos "the the". (Edward J. Yoon via szetszwo) HADOOP-4679. Datanode prints tons of log messages: waiting for threadgroup to exit, active threads is XX. (hairong) HADOOP-4746. Job output directory should be normalized. (hairong) HADOOP-4717. Removal of default port# in NameNode.getUri() causes a map/reduce job failed to prompt temporary output. (hairong) HADOOP-4778. Check for zero size block meta file when updating a block. (szetszwo) HADOOP-4742. Replica gets deleted by mistake. (Wang Xu via hairong) HADOOP-4702. Failed block replication leaves an incomplete block in receiver's tmp data directory. (hairong) HADOOP-4613. Fix block browsing on Web UI. (Johan Oskarsson via shv) HADOOP-4806. HDFS rename should not use src path as a regular expression. (szetszwo) HADOOP-4795. Prevent lease monitor getting into an infinite loop when leases and the namespace tree does not match. (szetszwo) HADOOP-4620. Fixes Streaming to handle well the cases of map/reduce with empty input/output. (Ravi Gummadi via ddas) HADOOP-4857. Fixes TestUlimit to have exactly 1 map in the jobs spawned. (Ravi Gummadi via ddas) HADOOP-4810. Data lost at cluster startup time. (hairong) HADOOP-4797. Improve how RPC server reads and writes large buffers. Avoids soft-leak of direct buffers and excess copies in NIO layer. (Raghu Angadi) HADOOP-4840. TestNodeCount sometimes fails with NullPointerException. (hairong) HADOOP-4904. Fix deadlock while leaving safe mode. (shv) HADOOP-1980. 'dfsadmin -safemode enter' should prevent the namenode from leaving safemode automatically. (shv & Raghu Angadi) HADOOP-4951. Lease monitor should acquire the LeaseManager lock but not the Monitor lock. (szetszwo) HADOOP-4935. processMisReplicatedBlocks() should not clear excessReplicateMap. (shv) HADOOP-4961. Fix ConcurrentModificationException in lease recovery of empty files. (shv) HADOOP-4971. A long (unexpected) delay at datanodes could make subsequent block reports from many datanode at the same time. (Raghu Angadi) HADOOP-4910. NameNode should exclude replicas when choosing excessive replicas to delete to avoid data lose. (hairong) HADOOP-4983. Fixes a problem in updating Counters in the status reporting. (Amareshwari Sriramadasu via ddas) Release 0.18.2 - 2008-11-03 BUG FIXES HADOOP-3614. Fix a bug that Datanode may use an old GenerationStamp to get meta file. (szetszwo) HADOOP-4314. Simulated datanodes should not include blocks that are still being written in their block report. (Raghu Angadi) HADOOP-4228. dfs datanode metrics, bytes_read and bytes_written, overflow due to incorrect type used. (hairong) HADOOP-4395. The FSEditLog loading is incorrect for the case OP_SET_OWNER. (szetszwo) HADOOP-4351. FSNamesystem.getBlockLocationsInternal throws ArrayIndexOutOfBoundsException. (hairong) HADOOP-4403. Make TestLeaseRecovery and TestFileCreation more robust. (szetszwo) HADOOP-4292. Do not support append() for LocalFileSystem. (hairong) HADOOP-4399. Make fuse-dfs multi-thread access safe. (Pete Wyckoff via dhruba) HADOOP-4369. Use setMetric(...) instead of incrMetric(...) for metrics averages. (Brian Bockelman via szetszwo) HADOOP-4469. Rename and add the ant task jar file to the tar file. (nigel) HADOOP-3914. DFSClient sends Checksum Ok only once for a block. (Christian Kunz via hairong) HADOOP-4467. SerializationFactory now uses the current context ClassLoader allowing for user supplied Serialization instances. (Chris Wensel via acmurthy) HADOOP-4517. Release FSDataset lock before joining ongoing create threads. (szetszwo) HADOOP-4526. fsck failing with NullPointerException. (hairong) HADOOP-4483 Honor the max parameter in DatanodeDescriptor.getBlockArray(..) (Ahad Rana and Hairong Kuang via szetszwo) HADOOP-4340. Correctly set the exit code from JobShell.main so that the 'hadoop jar' command returns the right code to the user. (acmurthy) NEW FEATURES HADOOP-2421. Add jdiff output to documentation, listing all API changes from the prior release. (cutting) Release 0.18.1 - 2008-09-17 IMPROVEMENTS HADOOP-3934. Upgrade log4j to 1.2.15. (omalley) BUG FIXES HADOOP-3995. In case of quota failure on HDFS, rename does not restore source filename. (rangadi) HADOOP-3821. Prevent SequenceFile and IFile from duplicating codecs in CodecPool when closed more than once. (Arun Murthy via cdouglas) HADOOP-4040. Remove coded default of the IPC idle connection timeout from the TaskTracker, which was causing HDFS client connections to not be collected. (ddas via omalley) HADOOP-4046. Made WritableComparable's constructor protected instead of private to re-enable class derivation. (cdouglas via omalley) HADOOP-3940. Fix in-memory merge condition to wait when there are no map outputs or when the final map outputs are being fetched without contention. (cdouglas) Release 0.18.0 - 2008-08-19 INCOMPATIBLE CHANGES HADOOP-2703. The default options to fsck skips checking files that are being written to. The output of fsck is incompatible with previous release. (lohit vijayarenu via dhruba) HADOOP-2865. FsShell.ls() printout format changed to print file names in the end of the line. (Edward J. Yoon via shv) HADOOP-3283. The Datanode has a RPC server. It currently supports two RPCs: the first RPC retrives the metadata about a block and the second RPC sets the generation stamp of an existing block. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2797. Code related to upgrading to 0.14 (Block CRCs) is removed. As result, upgrade to 0.18 or later from 0.13 or earlier is not supported. If upgrading from 0.13 or earlier is required, please upgrade to an intermediate version (0.14-0.17) and then to this version. (rangadi) HADOOP-544. This issue introduces new classes JobID, TaskID and TaskAttemptID, which should be used instead of their string counterparts. Functions in JobClient, TaskReport, RunningJob, jobcontrol.Job and TaskCompletionEvent that use string arguments are deprecated in favor of the corresponding ones that use ID objects. Applications can use xxxID.toString() and xxxID.forName() methods to convert/restore objects to/from strings. (Enis Soztutar via ddas) HADOOP-2188. RPC client sends a ping rather than throw timeouts. RPC server does not throw away old RPCs. If clients and the server are on different versions, they are not able to function well. In addition, The property ipc.client.timeout is removed from the default hadoop configuration. It also removes metrics RpcOpsDiscardedOPsNum. (hairong) HADOOP-2181. This issue adds logging for input splits in Jobtracker log and jobHistory log. Also adds web UI for viewing input splits in job UI and history UI. (Amareshwari Sriramadasu via ddas) HADOOP-3226. Run combiners multiple times over map outputs as they are merged in both the map and the reduce tasks. (cdouglas via omalley) HADOOP-3329. DatanodeDescriptor objects should not be stored in the fsimage. (dhruba) HADOOP-2656. The Block object has a generation stamp inside it. Existing blocks get a generation stamp of 0. This is needed to support appends. (dhruba) HADOOP-3390. Removed deprecated ClientProtocol.abandonFileInProgress(). (Tsz Wo (Nicholas), SZE via rangadi) HADOOP-3405. Made some map/reduce internal classes non-public: MapTaskStatus, ReduceTaskStatus, JobSubmissionProtocol, CompletedJobStatusStore. (enis via omaley) HADOOP-3265. Removed depcrecated API getFileCacheHints(). (Lohit Vijayarenu via rangadi) HADOOP-3310. The namenode instructs the primary datanode to do lease recovery. The block gets a new generation stamp. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2909. Improve IPC idle connection management. Property ipc.client.maxidletime is removed from the default configuration, instead it is defined as twice of the ipc.client.connection.maxidletime. A connection with outstanding requests won't be treated as idle. (hairong) HADOOP-3459. Change in the output format of dfs -ls to more closely match /bin/ls. New format is: perm repl owner group size date name (Mukund Madhugiri via omally) HADOOP-3113. An fsync invoked on a HDFS file really really persists data! The datanode moves blocks in the tmp directory to the real block directory on a datanode-restart. (dhruba) HADOOP-3452. Change fsck to return non-zero status for a corrupt FileSystem. (lohit vijayarenu via cdouglas) HADOOP-3193. Include the address of the client that found the corrupted block in the log. Also include a CorruptedBlocks metric to track the size of the corrupted block map. (cdouglas) HADOOP-3512. Separate out the tools into a tools jar. (omalley) HADOOP-3598. Ensure that temporary task-output directories are not created if they are not necessary e.g. for Maps with no side-effect files. (acmurthy) HADOOP-3665. Modify WritableComparator so that it only creates instances of the keytype if the type does not define a WritableComparator. Calling the superclass compare will throw a NullPointerException. Also define a RawComparator for NullWritable and permit it to be written as a key to SequenceFiles. (cdouglas) HADOOP-3673. Avoid deadlock caused by DataNode RPC receoverBlock(). (Tsz Wo (Nicholas), SZE via rangadi) NEW FEATURES HADOOP-3074. Provides a UrlStreamHandler for DFS and other FS, relying on FileSystem (taton) HADOOP-2585. Name-node imports namespace data from a recent checkpoint accessible via a NFS mount. (shv) HADOOP-3061. Writable types for doubles and bytes. (Andrzej Bialecki via omalley) HADOOP-2857. Allow libhdfs to set jvm options. (Craig Macdonald via omalley) HADOOP-3317. Add default port for HDFS namenode. The port in "hdfs:" URIs now defaults to 8020, so that one may simply use URIs of the form "hdfs://example.com/dir/file". (cutting) HADOOP-2019. Adds support for .tar, .tgz and .tar.gz files in DistributedCache (Amareshwari Sriramadasu via ddas) HADOOP-3058. Add FSNamesystem status metrics. (Lohit Vjayarenu via rangadi) HADOOP-1915. Allow users to specify counters via strings instead of enumerations. (tomwhite via omalley) HADOOP-2065. Delay invalidating corrupt replicas of block until its is removed from under replicated state. If all replicas are found to be corrupt, retain all copies and mark the block as corrupt. (Lohit Vjayarenu via rangadi) HADOOP-3221. Adds org.apache.hadoop.mapred.lib.NLineInputFormat, which splits files into splits each of N lines. N can be specified by configuration property "mapred.line.input.format.linespermap", which defaults to 1. (Amareshwari Sriramadasu via ddas) HADOOP-3336. Direct a subset of annotated FSNamesystem calls for audit logging. (cdouglas) HADOOP-3400. A new API FileSystem.deleteOnExit() that facilitates handling of temporary files in HDFS. (dhruba) HADOOP-4. Add fuse-dfs to contrib, permitting one to mount an HDFS filesystem on systems that support FUSE, e.g., Linux. (Pete Wyckoff via cutting) HADOOP-3246. Add FTPFileSystem. (Ankur Goel via cutting) HADOOP-3250. Extend FileSystem API to allow appending to files. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3177. Implement Syncable interface for FileSystem. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-1328. Implement user counters in streaming. (tomwhite via omalley) HADOOP-3187. Quotas for namespace management. (Hairong Kuang via ddas) HADOOP-3307. Support for Archives in Hadoop. (Mahadev Konar via ddas) HADOOP-3460. Add SequenceFileAsBinaryOutputFormat to permit direct writes of serialized data. (Koji Noguchi via cdouglas) HADOOP-3230. Add ability to get counter values from command line. (tomwhite via omalley) HADOOP-930. Add support for native S3 files. (tomwhite via cutting) HADOOP-3502. Quota API needs documentation in Forrest. (hairong) HADOOP-3413. Allow SequenceFile.Reader to use serialization framework. (tomwhite via omalley) HADOOP-3541. Import of the namespace from a checkpoint documented in hadoop user guide. (shv) IMPROVEMENTS HADOOP-3677. Simplify generation stamp upgrade by making is a local upgrade on datandodes. Deleted distributed upgrade. (rangadi) HADOOP-2928. Remove deprecated FileSystem.getContentLength(). (Lohit Vijayarenu via rangadi) HADOOP-3130. Make the connect timeout smaller for getFile. (Amar Ramesh Kamat via ddas) HADOOP-3160. Remove deprecated exists() from ClientProtocol and FSNamesystem (Lohit Vjayarenu via rangadi) HADOOP-2910. Throttle IPC Clients during bursts of requests or server slowdown. Clients retry connection for up to 15 minutes when socket connection times out. (hairong) HADOOP-3295. Allow TextOutputFormat to use configurable spearators. (Zheng Shao via cdouglas). HADOOP-3308. Improve QuickSort by excluding values eq the pivot from the partition. (cdouglas) HADOOP-2461. Trim property names in configuration. (Tsz Wo (Nicholas), SZE via shv) HADOOP-2799. Deprecate o.a.h.io.Closable in favor of java.io.Closable. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3345. Enhance the hudson-test-patch target to cleanup messages, fix minor defects, and add eclipse plugin and python unit tests. (nigel) HADOOP-3144. Improve robustness of LineRecordReader by defining a maximum line length (mapred.linerecordreader.maxlength), thereby avoiding reading too far into the following split. (Zheng Shao via cdouglas) HADOOP-3334. Move lease handling from FSNamesystem into a seperate class. (Tsz Wo (Nicholas), SZE via rangadi) HADOOP-3332. Reduces the amount of logging in Reducer's shuffle phase. (Devaraj Das) HADOOP-3355. Enhances Configuration class to accept hex numbers for getInt and getLong. (Amareshwari Sriramadasu via ddas) HADOOP-3350. Add an argument to distcp to permit the user to limit the number of maps. (cdouglas) HADOOP-3013. Add corrupt block reporting to fsck. (lohit vijayarenu via cdouglas) HADOOP-3377. Remove TaskRunner::replaceAll and replace with equivalent String::replace. (Brice Arnould via cdouglas) HADOOP-3398. Minor improvement to a utility function in that participates in backoff calculation. (cdouglas) HADOOP-3381. Clear referenced when directories are deleted so that effect of memory leaks are not multiplied. (rangadi) HADOOP-2867. Adds the task's CWD to its LD_LIBRARY_PATH. (Amareshwari Sriramadasu via ddas) HADOOP-3232. DU class runs the 'du' command in a seperate thread so that it does not block user. DataNode misses heartbeats in large nodes otherwise. (Johan Oskarsson via rangadi) HADOOP-3035. During block transfers between datanodes, the receiving datanode, now can report corrupt replicas received from src node to the namenode. (Lohit Vijayarenu via rangadi) HADOOP-3434. Retain the cause of the bind failure in Server::bind. (Steve Loughran via cdouglas) HADOOP-3429. Increases the size of the buffers used for the communication for Streaming jobs. (Amareshwari Sriramadasu via ddas) HADOOP-3486. Change default for initial block report to 0 seconds and document it. (Sanjay Radia via omalley) HADOOP-3448. Improve the text in the assertion making sure the layout versions are consistent in the data node. (Steve Loughran via omalley) HADOOP-2095. Improve the Map-Reduce shuffle/merge by cutting down buffer-copies; changed intermediate sort/merge to use the new IFile format rather than SequenceFiles and compression of map-outputs is now implemented by compressing the entire file rather than SequenceFile compression. Shuffle also has been changed to use a simple byte-buffer manager rather than the InMemoryFileSystem. Configuration changes to hadoop-default.xml: deprecated mapred.map.output.compression.type (acmurthy) HADOOP-236. JobTacker now refuses connection from a task tracker with a different version number. (Sharad Agarwal via ddas) HADOOP-3427. Improves the shuffle scheduler. It now waits for notifications from shuffle threads when it has scheduled enough, before scheduling more. (ddas) HADOOP-2393. Moves the handling of dir deletions in the tasktracker to a separate thread. (Amareshwari Sriramadasu via ddas) HADOOP-3501. Deprecate InMemoryFileSystem. (cutting via omalley) HADOOP-3366. Stall the shuffle while in-memory merge is in progress. (acmurthy) HADOOP-2916. Refactor src structure, but leave package structure alone. (Raghu Angadi via mukund) HADOOP-3492. Add forrest documentation for user archives. (Mahadev Konar via hairong) HADOOP-3467. Improve documentation for FileSystem::deleteOnExit. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3379. Documents stream.non.zero.exit.status.is.failure for Streaming. (Amareshwari Sriramadasu via ddas) HADOOP-3096. Improves documentation about the Task Execution Environment in the Map-Reduce tutorial. (Amareshwari Sriramadasu via ddas) HADOOP-2984. Add forrest documentation for DistCp. (cdouglas) HADOOP-3406. Add forrest documentation for Profiling. (Amareshwari Sriramadasu via ddas) HADOOP-2762. Add forrest documentation for controls of memory limits on hadoop daemons and Map-Reduce tasks. (Amareshwari Sriramadasu via ddas) HADOOP-3535. Fix documentation and name of IOUtils.close to reflect that it should only be used in cleanup contexts. (omalley) HADOOP-3593. Updates the mapred tutorial. (ddas) HADOOP-3547. Documents the way in which native libraries can be distributed via the DistributedCache. (Amareshwari Sriramadasu via ddas) HADOOP-3606. Updates the Streaming doc. (Amareshwari Sriramadasu via ddas) HADOOP-3532. Add jdiff reports to the build scripts. (omalley) HADOOP-3100. Develop tests to test the DFS command line interface. (mukund) HADOOP-3688. Fix up HDFS docs. (Robert Chansler via hairong) OPTIMIZATIONS HADOOP-3274. The default constructor of BytesWritable creates empty byte array. (Tsz Wo (Nicholas), SZE via shv) HADOOP-3272. Remove redundant copy of Block object in BlocksMap. (Lohit Vjayarenu via shv) HADOOP-3164. Reduce DataNode CPU usage by using FileChannel.tranferTo(). On Linux DataNode takes 5 times less CPU while serving data. Results may vary on other platforms. (rangadi) HADOOP-3248. Optimization of saveFSImage. (Dhruba via shv) HADOOP-3297. Fetch more task completion events from the job tracker and task tracker. (ddas via omalley) HADOOP-3364. Faster image and log edits loading. (shv) HADOOP-3369. Fast block processing during name-node startup. (shv) HADOOP-1702. Reduce buffer copies when data is written to DFS. DataNodes take 30% less CPU while writing data. (rangadi) HADOOP-3095. Speed up split generation in the FileInputSplit, especially for non-HDFS file systems. Deprecates InputFormat.validateInput. (tomwhite via omalley) HADOOP-3552. Add forrest documentation for Hadoop commands. (Sharad Agarwal via cdouglas) BUG FIXES HADOOP-2905. 'fsck -move' triggers NPE in NameNode. (Lohit Vjayarenu via rangadi) Increment ClientProtocol.versionID missed by HADOOP-2585. (shv) HADOOP-3254. Restructure internal namenode methods that process heartbeats to use well-defined BlockCommand object(s) instead of using the base java Object. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-3176. Change lease record when a open-for-write-file gets renamed. (dhruba) HADOOP-3269. Fix a case when namenode fails to restart while processing a lease record. ((Tsz Wo (Nicholas), SZE via dhruba) HADOOP-3282. Port issues in TestCheckpoint resolved. (shv) HADOOP-3268. file:// URLs issue in TestUrlStreamHandler under Windows. (taton) HADOOP-3127. Deleting files in trash should really remove them. (Brice Arnould via omalley) HADOOP-3300. Fix locking of explicit locks in NetworkTopology. (tomwhite via omalley) HADOOP-3270. Constant DatanodeCommands are stored in static final immutable variables for better code clarity. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2793. Fix broken links for worst performing shuffle tasks in the job history page. (Amareshwari Sriramadasu via ddas) HADOOP-3313. Avoid unnecessary calls to System.currentTimeMillis in RPC::Invoker. (cdouglas) HADOOP-3318. Recognize "Darwin" as an alias for "Mac OS X" to support Soylatte. (Sam Pullara via omalley) HADOOP-3301. Fix misleading error message when S3 URI hostname contains an underscore. (tomwhite via omalley) HADOOP-3338. Fix Eclipse plugin to compile after HADOOP-544 was committed. Updated all references to use the new JobID representation. (taton via nigel) HADOOP-3337. Loading FSEditLog was broken by HADOOP-3283 since it changed Writable serialization of DatanodeInfo. This patch handles it. (Tsz Wo (Nicholas), SZE via rangadi) HADOOP-3101. Prevent JobClient from throwing an exception when printing usage. (Edward J. Yoon via cdouglas) HADOOP-3119. Update javadoc for Text::getBytes to better describe its behavior. (Tim Nelson via cdouglas) HADOOP-2294. Fix documentation in libhdfs to refer to the correct free function. (Craig Macdonald via cdouglas) HADOOP-3335. Prevent the libhdfs build from deleting the wrong files on make clean. (cutting via omalley) HADOOP-2930. Make {start,stop}-balancer.sh work even if hadoop-daemon.sh is not in the PATH. (Spiros Papadimitriou via hairong) HADOOP-3085. Catch Exception in metrics util classes to ensure that misconfigured metrics don't prevent others from updating. (cdouglas) HADOOP-3299. CompositeInputFormat should configure the sub-input formats. (cdouglas via omalley) HADOOP-3309. Lower io.sort.mb and fs.inmemory.size.mb for MiniMRDFSSort unit test so it passes on Windows. (lohit vijayarenu via cdouglas) HADOOP-3348. TestUrlStreamHandler should set URLStreamFactory after DataNodes are initialized. (Lohit Vijayarenu via rangadi) HADOOP-3371. Ignore InstanceAlreadyExistsException from MBeanUtil::registerMBean. (lohit vijayarenu via cdouglas) HADOOP-3349. A file rename was incorrectly changing the name inside a lease record. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-3365. Removes an unnecessary copy of the key from SegmentDescriptor to MergeQueue. (Devaraj Das) HADOOP-3388. Fix for TestDatanodeBlockScanner to handle blocks with generation stamps in them. (dhruba) HADOOP-3203. Fixes TaskTracker::localizeJob to pass correct file sizes for the jarfile and the jobfile. (Amareshwari Sriramadasu via ddas) HADOOP-3391. Fix a findbugs warning introduced by HADOOP-3248 (rangadi) HADOOP-3393. Fix datanode shutdown to call DataBlockScanner::shutdown and close its log, even if the scanner thread is not running. (lohit vijayarenu via cdouglas) HADOOP-3399. A debug message was logged at info level. (rangadi) HADOOP-3396. TestDatanodeBlockScanner occationally fails. (Lohit Vijayarenu via rangadi) HADOOP-3339. Some of the failures on 3rd datanode in DFS write pipelie are not detected properly. This could lead to hard failure of client's write operation. (rangadi) HADOOP-3409. Namenode should save the root inode into fsimage. (hairong) HADOOP-3296. Fix task cache to work for more than two levels in the cache hierarchy. This also adds a new counter to track cache hits at levels greater than two. (Amar Kamat via cdouglas) HADOOP-3375. Lease paths were sometimes not removed from LeaseManager.sortedLeasesByPath. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-3424. Values returned by getPartition should be checked to make sure they are in the range 0 to #reduces - 1 (cdouglas via omalley) HADOOP-3408. Change FSNamesystem to send its metrics as integers to accommodate collectors that don't support long values. (lohit vijayarenu via cdouglas) HADOOP-3403. Fixes a problem in the JobTracker to do with handling of lost tasktrackers. (Arun Murthy via ddas) HADOOP-1318. Completed maps are not failed if the number of reducers are zero. (Amareshwari Sriramadasu via ddas). HADOOP-3351. Fixes the history viewer tool to not do huge StringBuffer allocations. (Amareshwari Sriramadasu via ddas) HADOOP-3419. Fixes TestFsck to wait for updates to happen before checking results to make the test more reliable. (Lohit Vijaya Renu via omalley) HADOOP-3259. Makes failure to read system properties due to a security manager non-fatal. (Edward Yoon via omalley) HADOOP-3451. Update libhdfs to use FileSystem::getFileBlockLocations instead of removed getFileCacheHints. (lohit vijayarenu via cdouglas) HADOOP-3401. Update FileBench to set the new "mapred.work.output.dir" property to work post-3041. (cdouglas via omalley) HADOOP-2669. DFSClient locks pendingCreates appropriately. (dhruba) HADOOP-3410. Fix KFS implemenation to return correct file modification time. (Sriram Rao via cutting) HADOOP-3340. Fix DFS metrics for BlocksReplicated, HeartbeatsNum, and BlockReportsAverageTime. (lohit vijayarenu via cdouglas) HADOOP-3435. Remove the assuption in the scripts that bash is at /bin/bash and fix the test patch to require bash instead of sh. (Brice Arnould via omalley) HADOOP-3471. Fix spurious errors from TestIndexedSort and add additional logging to let failures be reproducible. (cdouglas) HADOOP-3443. Avoid copying map output across partitions when renaming a single spill. (omalley via cdouglas) HADOOP-3454. Fix Text::find to search only valid byte ranges. (Chad Whipkey via cdouglas) HADOOP-3417. Removes the static configuration variable, commandLineConfig from JobClient. Moves the cli parsing from JobShell to GenericOptionsParser. Thus removes the class org.apache.hadoop.mapred.JobShell. (Amareshwari Sriramadasu via ddas) HADOOP-2132. Only RUNNING/PREP jobs can be killed. (Jothi Padmanabhan via ddas) HADOOP-3476. Code cleanup in fuse-dfs. (Peter Wyckoff via dhruba) HADOOP-2427. Ensure that the cwd of completed tasks is cleaned-up correctly on task-completion. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-2565. Remove DFSPath cache of FileStatus. (Tsz Wo (Nicholas), SZE via hairong) HADOOP-3326. Cleanup the local-fs and in-memory merge in the ReduceTask by spawing only one thread each for the on-disk and in-memory merge. (Sharad Agarwal via acmurthy) HADOOP-3493. Fix TestStreamingFailure to use FileUtil.fullyDelete to ensure correct cleanup. (Lohit Vijayarenu via acmurthy) HADOOP-3455. Fix NPE in ipc.Client in case of connection failure and improve its synchronization. (hairong) HADOOP-3240. Fix a testcase to not create files in the current directory. Instead the file is created in the test directory (Mahadev Konar via ddas) HADOOP-3496. Fix failure in TestHarFileSystem.testArchives due to change in HADOOP-3095. (tomwhite) HADOOP-3135. Get the system directory from the JobTracker instead of from the conf. (Subramaniam Krishnan via ddas) HADOOP-3503. Fix a race condition when client and namenode start simultaneous recovery of the same block. (dhruba & Tsz Wo (Nicholas), SZE) HADOOP-3440. Fixes DistributedCache to not create symlinks for paths which don't have fragments even when createSymLink is true. (Abhijit Bagri via ddas) HADOOP-3463. Hadoop-daemons script should cd to $HADOOP_HOME. (omalley) HADOOP-3489. Fix NPE in SafeModeMonitor. (Lohit Vijayarenu via shv) HADOOP-3509. Fix NPE in FSNamesystem.close. (Tsz Wo (Nicholas), SZE via shv) HADOOP-3491. Name-node shutdown causes InterruptedException in ResolutionMonitor. (Lohit Vijayarenu via shv) HADOOP-3511. Fixes namenode image to not set the root's quota to an invalid value when the quota was not saved in the image. (hairong) HADOOP-3516. Ensure the JobClient in HadoopArchives is initialized with a configuration. (Subramaniam Krishnan via omalley) HADOOP-3513. Improve NNThroughputBenchmark log messages. (shv) HADOOP-3519. Fix NPE in DFS FileSystem rename. (hairong via tomwhite) HADOOP-3528. Metrics FilesCreated and files_deleted metrics do not match. (Lohit via Mahadev) HADOOP-3418. When a directory is deleted, any leases that point to files in the subdirectory are removed. ((Tsz Wo (Nicholas), SZE via dhruba) HADOOP-3542. Diables the creation of _logs directory for the archives directory. (Mahadev Konar via ddas) HADOOP-3544. Fixes a documentation issue for hadoop archives. (Mahadev Konar via ddas) HADOOP-3517. Fixes a problem in the reducer due to which the last InMemory merge may be missed. (Arun Murthy via ddas) HADOOP-3548. Fixes build.xml to copy all *.jar files to the dist. (Owen O'Malley via ddas) HADOOP-3363. Fix unformatted storage detection in FSImage. (shv) HADOOP-3560. Fixes a problem to do with split creation in archives. (Mahadev Konar via ddas) HADOOP-3545. Fixes a overflow problem in archives. (Mahadev Konar via ddas) HADOOP-3561. Prevent the trash from deleting its parent directories. (cdouglas) HADOOP-3575. Fix the clover ant target after package refactoring. (Nigel Daley via cdouglas) HADOOP-3539. Fix the tool path in the bin/hadoop script under cygwin. (Tsz Wo (Nicholas), Sze via omalley) HADOOP-3520. TestDFSUpgradeFromImage triggers a race condition in the Upgrade Manager. Fixed. (dhruba) HADOOP-3586. Provide deprecated, backwards compatibile semantics for the combiner to be run once and only once on each record. (cdouglas) HADOOP-3533. Add deprecated methods to provide API compatibility between 0.18 and 0.17. Remove the deprecated methods in trunk. (omalley) HADOOP-3580. Fixes a problem to do with specifying a har as an input to a job. (Mahadev Konar via ddas) HADOOP-3333. Don't assign a task to a tasktracker that it failed to execute earlier (used to happen in the case of lost tasktrackers where the tasktracker would reinitialize and bind to a different port). (Jothi Padmanabhan and Arun Murthy via ddas) HADOOP-3534. Log IOExceptions that happen in closing the name system when the NameNode shuts down. (Tsz Wo (Nicholas) Sze via omalley) HADOOP-3546. TaskTracker re-initialization gets stuck in cleaning up. (Amareshwari Sriramadasu via ddas) HADOOP-3576. Fix NullPointerException when renaming a directory to its subdirectory. (Tse Wo (Nicholas), SZE via hairong) HADOOP-3320. Fix NullPointerException in NetworkTopology.getDistance(). (hairong) HADOOP-3569. KFS input stream read() now correctly reads 1 byte instead of 4. (Sriram Rao via omalley) HADOOP-3599. Fix JobConf::setCombineOnceOnly to modify the instance rather than a parameter. (Owen O'Malley via cdouglas) HADOOP-3590. Null pointer exception in JobTracker when the task tracker is not yet resolved. (Amar Ramesh Kamat via ddas) HADOOP-3603. Fix MapOutputCollector to spill when io.sort.spill.percent is 1.0 and to detect spills when emitted records write no data. (cdouglas) HADOOP-3615. Set DatanodeProtocol.versionID to the correct value. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3559. Fix the libhdfs test script and config to work with the current semantics. (lohit vijayarenu via cdouglas) HADOOP-3480. Need to update Eclipse template to reflect current trunk. (Brice Arnould via tomwhite) HADOOP-3588. Fixed usability issues with archives. (mahadev) HADOOP-3635. Uncaught exception in DataBlockScanner. (Tsz Wo (Nicholas), SZE via hairong) HADOOP-3639. Exception when closing DFSClient while multiple files are open. (Benjamin Gufler via hairong) HADOOP-3572. SetQuotas usage interface has some minor bugs. (hairong) HADOOP-3649. Fix bug in removing blocks from the corrupted block map. (Lohit Vijayarenu via shv) HADOOP-3604. Work around a JVM synchronization problem observed while retrieving the address of direct buffers from compression code by obtaining a lock during this call. (Arun C Murthy via cdouglas) HADOOP-3683. Fix dfs metrics to count file listings rather than files listed. (lohit vijayarenu via cdouglas) HADOOP-3597. Fix SortValidator to use filesystems other than the default as input. Validation job still runs on default fs. (Jothi Padmanabhan via cdouglas) HADOOP-3693. Fix archives, distcp and native library documentation to conform to style guidelines. (Amareshwari Sriramadasu via cdouglas) HADOOP-3653. Fix test-patch target to properly account for Eclipse classpath jars. (Brice Arnould via nigel) HADOOP-3692. Fix documentation for Cluster setup and Quick start guides. (Amareshwari Sriramadasu via ddas) HADOOP-3691. Fix streaming and tutorial docs. (Jothi Padmanabhan via ddas) HADOOP-3630. Fix NullPointerException in CompositeRecordReader from empty sources (cdouglas) HADOOP-3706. Fix a ClassLoader issue in the mapred.join Parser that prevents it from loading user-specified InputFormats. (Jingkei Ly via cdouglas) HADOOP-3718. Fix KFSOutputStream::write(int) to output a byte instead of an int, per the OutputStream contract. (Sriram Rao via cdouglas) HADOOP-3647. Add debug logs to help track down a very occassional, hard-to-reproduce, bug in shuffle/merge on the reducer. (acmurthy) HADOOP-3716. Prevent listStatus in KosmosFileSystem from returning null for valid, empty directories. (Sriram Rao via cdouglas) HADOOP-3752. Fix audit logging to record rename events. (cdouglas) HADOOP-3737. Fix CompressedWritable to call Deflater::end to release compressor memory. (Grant Glouser via cdouglas) HADOOP-3670. Fixes JobTracker to clear out split bytes when no longer required. (Amareshwari Sriramadasu via ddas) HADOOP-3755. Update gridmix to work with HOD 0.4 (Runping Qi via cdouglas) HADOOP-3743. Fix -libjars, -files, -archives options to work even if user code does not implement tools. (Amareshwari Sriramadasu via mahadev) HADOOP-3774. Fix typos in shell output. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3762. Fixed FileSystem cache to work with the default port. (cutting via omalley) HADOOP-3798. Fix tests compilation. (Mukund Madhugiri via omalley) HADOOP-3794. Return modification time instead of zero for KosmosFileSystem. (Sriram Rao via cdouglas) HADOOP-3806. Remove debug statement to stdout from QuickSort. (cdouglas) HADOOP-3776. Fix NPE at NameNode when datanode reports a block after it is deleted at NameNode. (rangadi) HADOOP-3537. Disallow adding a datanode to a network topology when its network location is not resolved. (hairong) HADOOP-3571. Fix bug in block removal used in lease recovery. (shv) HADOOP-3645. MetricsTimeVaryingRate returns wrong value for metric_avg_time. (Lohit Vijayarenu via hairong) HADOOP-3521. Reverted the missing cast to float for sending Counters' values to Hadoop metrics which was removed by HADOOP-544. (acmurthy) HADOOP-3820. Fixes two problems in the gridmix-env - a syntax error, and a wrong definition of USE_REAL_DATASET by default. (Arun Murthy via ddas) HADOOP-3724. Fixes two problems related to storing and recovering lease in the fsimage. (dhruba) HADOOP-3827. Fixed compression of empty map-outputs. (acmurthy) HADOOP-3865. Remove reference to FSNamesystem from metrics preventing garbage collection. (Lohit Vijayarenu via cdouglas) HADOOP-3884. Fix so that Eclipse plugin builds against recent Eclipse releases. (cutting) HADOOP-3837. Streaming jobs report progress status. (dhruba) HADOOP-3897. Fix a NPE in secondary namenode. (Lohit Vijayarenu via cdouglas) HADOOP-3901. Fix bin/hadoop to correctly set classpath under cygwin. (Tsz Wo (Nicholas) Sze via omalley) HADOOP-3947. Fix a problem in tasktracker reinitialization. (Amareshwari Sriramadasu via ddas) Release 0.17.3 - Unreleased IMPROVEMENTS HADOOP-4164. Chinese translation of the documentation. (Xuebing Yan via omalley) BUG FIXES HADOOP-4277. Checksum verification was mistakenly disabled for LocalFileSystem. (Raghu Angadi) HADOOP-4271. Checksum input stream can sometimes return invalid data to the user. (Ning Li via rangadi) HADOOP-4318. DistCp should use absolute paths for cleanup. (szetszwo) HADOOP-4326. ChecksumFileSystem does not override create(...) correctly. (szetszwo) Release 0.17.2 - 2008-08-11 BUG FIXES HADOOP-3678. Avoid spurious exceptions logged at DataNode when clients read from DFS. (rangadi) HADOOP-3707. NameNode keeps a count of number of blocks scheduled to be written to a datanode and uses it to avoid allocating more blocks than a datanode can hold. (rangadi) HADOOP-3760. Fix a bug with HDFS file close() mistakenly introduced by HADOOP-3681. (Lohit Vijayarenu via rangadi) HADOOP-3681. DFSClient can get into an infinite loop while closing a file if there are some errors. (Lohit Vijayarenu via rangadi) HADOOP-3002. Hold off block removal while in safe mode. (shv) HADOOP-3685. Unbalanced replication target. (hairong) HADOOP-3758. Shutdown datanode on version mismatch instead of retrying continuously, preventing excessive logging at the namenode. (lohit vijayarenu via cdouglas) HADOOP-3633. Correct exception handling in DataXceiveServer, and throttle the number of xceiver threads in a data-node. (shv) HADOOP-3370. Ensure that the TaskTracker.runningJobs data-structure is correctly cleaned-up on task completion. (Zheng Shao via acmurthy) HADOOP-3813. Fix task-output clean-up on HDFS to use the recursive FileSystem.delete rather than the FileUtil.fullyDelete. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-3859. Allow the maximum number of xceivers in the data node to be configurable. (Johan Oskarsson via omalley) HADOOP-3931. Fix corner case in the map-side sort that causes some values to be counted as too large and cause pre-mature spills to disk. Some values will also bypass the combiner incorrectly. (cdouglas via omalley) Release 0.17.1 - 2008-06-23 INCOMPATIBLE CHANGES HADOOP-3565. Fix the Java serialization, which is not enabled by default, to clear the state of the serializer between objects. (tomwhite via omalley) IMPROVEMENTS HADOOP-3522. Improve documentation on reduce pointing out that input keys and values will be reused. (omalley) HADOOP-3487. Balancer uses thread pools for managing its threads; therefore provides better resource management. (hairong) BUG FIXES HADOOP-2159 Namenode stuck in safemode. The counter blockSafe should not be decremented for invalid blocks. (hairong) HADOOP-3472 MapFile.Reader getClosest() function returns incorrect results when before is true (Todd Lipcon via Stack) HADOOP-3442. Limit recursion depth on the stack for QuickSort to prevent StackOverflowErrors. To avoid O(n*n) cases, when partitioning depth exceeds a multiple of log(n), change to HeapSort. (cdouglas) HADOOP-3477. Fix build to not package contrib/*/bin twice in distributions. (Adam Heath via cutting) HADOOP-3475. Fix MapTask to correctly size the accounting allocation of io.sort.mb. (cdouglas) HADOOP-3550. Fix the serialization data structures in MapTask where the value lengths are incorrectly calculated. (cdouglas) HADOOP-3526. Fix contrib/data_join framework by cloning values retained in the reduce. (Spyros Blanas via cdouglas) HADOOP-1979. Speed up fsck by adding a buffered stream. (Lohit Vijaya Renu via omalley) Release 0.17.0 - 2008-05-18 INCOMPATIBLE CHANGES HADOOP-2786. Move hbase out of hadoop core HADOOP-2345. New HDFS transactions to support appending to files. Disk layout version changed from -11 to -12. (dhruba) HADOOP-2192. Error messages from "dfs mv" command improved. (Mahadev Konar via dhruba) HADOOP-1902. "dfs du" command without any arguments operates on the current working directory. (Mahadev Konar via dhruba) HADOOP-2873. Fixed bad disk format introduced by HADOOP-2345. Disk layout version changed from -12 to -13. See changelist 630992 (dhruba) HADOOP-1985. This addresses rack-awareness for Map tasks and for HDFS in a uniform way. (ddas) HADOOP-1986. Add support for a general serialization mechanism for Map Reduce. (tomwhite) HADOOP-771. FileSystem.delete() takes an explicit parameter that specifies whether a recursive delete is intended. (Mahadev Konar via dhruba) HADOOP-2470. Remove getContentLength(String), open(String, long, long) and isDir(String) from ClientProtocol. ClientProtocol version changed from 26 to 27. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-2822. Remove deprecated code for classes InputFormatBase and PhasedFileSystem. (Amareshwari Sriramadasu via enis) HADOOP-2116. Changes the layout of the task execution directory. (Amareshwari Sriramadasu via ddas) HADOOP-2828. The following deprecated methods in Configuration.java have been removed getObject(String name) setObject(String name, Object value) get(String name, Object defaultValue) set(String name, Object value) Iterator entries() (Amareshwari Sriramadasu via ddas) HADOOP-2824. Removes one deprecated constructor from MiniMRCluster. (Amareshwari Sriramadasu via ddas) HADOOP-2823. Removes deprecated methods getColumn(), getLine() from org.apache.hadoop.record.compiler.generated.SimpleCharStream. (Amareshwari Sriramadasu via ddas) HADOOP-3060. Removes one unused constructor argument from MiniMRCluster. (Amareshwari Sriramadasu via ddas) HADOOP-2854. Remove deprecated o.a.h.ipc.Server::getUserInfo(). (lohit vijayarenu via cdouglas) HADOOP-2563. Remove deprecated FileSystem::listPaths. (lohit vijayarenu via cdouglas) HADOOP-2818. Remove deprecated methods in Counters. (Amareshwari Sriramadasu via tomwhite) HADOOP-2831. Remove deprecated o.a.h.dfs.INode::getAbsoluteName() (lohit vijayarenu via cdouglas) HADOOP-2839. Remove deprecated FileSystem::globPaths. (lohit vijayarenu via cdouglas) HADOOP-2634. Deprecate ClientProtocol::exists. (lohit vijayarenu via cdouglas) HADOOP-2410. Make EC2 cluster nodes more independent of each other. Multiple concurrent EC2 clusters are now supported, and nodes may be added to a cluster on the fly with new nodes starting in the same EC2 availability zone as the cluster. Ganglia monitoring and large instance sizes have also been added. (Chris K Wensel via tomwhite) HADOOP-2826. Deprecated FileSplit.getFile(), LineRecordReader.readLine(). (Amareshwari Sriramadasu via ddas) HADOOP-3239. getFileInfo() returns null for non-existing files instead of throwing FileNotFoundException. (Lohit Vijayarenu via shv) HADOOP-3266. Removed HOD changes from CHANGES.txt, as they are now inside src/contrib/hod (Hemanth Yamijala via ddas) HADOOP-3280. Separate the configuration of the virtual memory size (mapred.child.ulimit) from the jvm heap size, so that 64 bit streaming applications are supported even when running with 32 bit jvms. (acmurthy via omalley) NEW FEATURES HADOOP-1398. Add HBase in-memory block cache. (tomwhite) HADOOP-2178. Job History on DFS. (Amareshwari Sri Ramadasu via ddas) HADOOP-2063. A new parameter to dfs -get command to fetch a file even if it is corrupted. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2219. A new command "df -count" that counts the number of files and directories. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2906. Add an OutputFormat capable of using keys, values, and config params to map records to different output files. (Runping Qi via cdouglas) HADOOP-2346. Utilities to support timeout while writing to sockets. DFSClient and DataNode sockets have 10min write timeout. (rangadi) HADOOP-2951. Add a contrib module that provides a utility to build or update Lucene indexes using Map/Reduce. (Ning Li via cutting) HADOOP-1622. Allow multiple jar files for map reduce. (Mahadev Konar via dhruba) HADOOP-2055. Allows users to set PathFilter on the FileInputFormat. (Alejandro Abdelnur via ddas) HADOOP-2551. More environment variables like HADOOP_NAMENODE_OPTS for better control of HADOOP_OPTS for each component. (rangadi) HADOOP-3001. Add job counters that measure the number of bytes read and written to HDFS, S3, KFS, and local file systems. (omalley) HADOOP-3048. A new Interface and a default implementation to convert and restore serializations of objects to/from strings. (enis) IMPROVEMENTS HADOOP-2655. Copy on write for data and metadata files in the presence of snapshots. Needed for supporting appends to HDFS files. (dhruba) HADOOP-1967. When a Path specifies the same scheme as the default FileSystem but no authority, the default FileSystem's authority is used. Also add warnings for old-format FileSystem names, accessor methods for fs.default.name, and check for null authority in HDFS. (cutting) HADOOP-2895. Let the profiling string be configurable. (Martin Traverso via cdouglas) HADOOP-910. Enables Reduces to do merges for the on-disk map output files in parallel with their copying. (Amar Kamat via ddas) HADOOP-730. Use rename rather than copy for local renames. (cdouglas) HADOOP-2810. Updated the Hadoop Core logo. (nigel) HADOOP-2057. Streaming should optionally treat a non-zero exit status of a child process as a failed task. (Rick Cox via tomwhite) HADOOP-2765. Enables specifying ulimits for streaming/pipes tasks (ddas) HADOOP-2888. Make gridmix scripts more readily configurable and amenable to automated execution. (Mukund Madhugiri via cdouglas) HADOOP-2908. A document that describes the DFS Shell command. (Mahadev Konar via dhruba) HADOOP-2981. Update README.txt to reflect the upcoming use of cryptography. (omalley) HADOOP-2804. Add support to publish CHANGES.txt as HTML when running the Ant 'docs' target. (nigel) HADOOP-2559. Change DFS block placement to allocate the first replica locally, the second off-rack, and the third intra-rack from the second. (lohit vijayarenu via cdouglas) HADOOP-2939. Make the automated patch testing process an executable Ant target, test-patch. (nigel) HADOOP-2239. Add HsftpFileSystem to permit transferring files over ssl. (cdouglas) HADOOP-2886. Track individual RPC metrics. (girish vaitheeswaran via dhruba) HADOOP-2373. Improvement in safe-mode reporting. (shv) HADOOP-3091. Modify FsShell command -put to accept multiple sources. (Lohit Vijaya Renu via cdouglas) HADOOP-3092. Show counter values from job -status command. (Tom White via ddas) HADOOP-1228. Ant task to generate Eclipse project files. (tomwhite) HADOOP-3093. Adds Configuration.getStrings(name, default-value) and the corresponding setStrings. (Amareshwari Sriramadasu via ddas) HADOOP-3106. Adds documentation in forrest for debugging. (Amareshwari Sriramadasu via ddas) HADOOP-3099. Add an option to distcp to preserve user, group, and permission information. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-2841. Unwrap AccessControlException and FileNotFoundException from RemoteException for DFSClient. (shv) HADOOP-3152. Make index interval configuable when using MapFileOutputFormat for map-reduce job. (Rong-En Fan via cutting) HADOOP-3143. Decrease number of slaves from 4 to 3 in TestMiniMRDFSSort, as Hudson generates false negatives under the current load. (Nigel Daley via cdouglas) HADOOP-3174. Illustrative example for MultipleFileInputFormat. (Enis Soztutar via acmurthy) HADOOP-2993. Clarify the usage of JAVA_HOME in the Quick Start guide. (acmurthy via nigel) HADOOP-3124. Make DataNode socket write timeout configurable. (rangadi) OPTIMIZATIONS HADOOP-2790. Fixed inefficient method hasSpeculativeTask by removing repetitive calls to get the current time and late checking to see if we want speculation on at all. (omalley) HADOOP-2758. Reduce buffer copies in DataNode when data is read from HDFS, without negatively affecting read throughput. (rangadi) HADOOP-2399. Input key and value to combiner and reducer is reused. (Owen O'Malley via ddas). HADOOP-2423. Code optimization in FSNamesystem.mkdirs. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2606. ReplicationMonitor selects data-nodes to replicate directly from needed replication blocks instead of looking up for the blocks for each live data-node. (shv) HADOOP-2148. Eliminate redundant data-node blockMap lookups. (shv) HADOOP-2027. Return the number of bytes in each block in a file via a single rpc to the namenode to speed up job planning. (Lohit Vijaya Renu via omalley) HADOOP-2902. Replace uses of "fs.default.name" with calls to the accessor methods added in HADOOP-1967. (cutting) HADOOP-2119. Optimize scheduling of jobs with large numbers of tasks by replacing static arrays with lists of runnable tasks. (Amar Kamat via omalley) HADOOP-2919. Reduce the number of memory copies done during the map output sorting. Also adds two config variables: io.sort.spill.percent - the percentages of io.sort.mb that should cause a spill (default 80%) io.sort.record.percent - the percent of io.sort.mb that should hold key/value indexes (default 5%) (cdouglas via omalley) HADOOP-3140. Doesn't add a task in the commit queue if the task hadn't generated any output. (Amar Kamat via ddas) HADOOP-3168. Reduce the amount of logging in streaming to an exponentially increasing number of records (up to 10,000 records/log). (Zheng Shao via omalley) BUG FIXES HADOOP-2195. '-mkdir' behaviour is now closer to Linux shell in case of errors. (Mahadev Konar via rangadi) HADOOP-2190. bring behaviour '-ls' and '-du' closer to Linux shell commands in case of errors. (Mahadev Konar via rangadi) HADOOP-2193. 'fs -rm' and 'fs -rmr' show error message when the target file does not exist. (Mahadev Konar via rangadi) HADOOP-2738 Text is not subclassable because set(Text) and compareTo(Object) access the other instance's private members directly. (jimk) HADOOP-2779. Remove the references to HBase in the build.xml. (omalley) HADOOP-2194. dfs cat on a non-existent file throws FileNotFoundException. (Mahadev Konar via dhruba) HADOOP-2767. Fix for NetworkTopology erroneously skipping the last leaf node on a rack. (Hairong Kuang and Mark Butler via dhruba) HADOOP-1593. FsShell works with paths in non-default FileSystem. (Mahadev Konar via dhruba) HADOOP-2191. du and dus command on non-existent directory gives appropriate error message. (Mahadev Konar via dhruba) HADOOP-2832. Remove tabs from code of DFSClient for better indentation. (dhruba) HADOOP-2844. distcp closes file handles for sequence files. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2727. Fix links in Web UI of the hadoop daemons and some docs (Amareshwari Sri Ramadasu via ddas) HADOOP-2871. Fixes a problem to do with file: URI in the JobHistory init. (Amareshwari Sri Ramadasu via ddas) HADOOP-2800. Deprecate SetFile.Writer constructor not the whole class. (Johan Oskarsson via tomwhite) HADOOP-2891. DFSClient.close() closes all open files. (dhruba) HADOOP-2845. Fix dfsadmin disk utilization report on Solaris. (Martin Traverso via tomwhite) HADOOP-2912. MiniDFSCluster restart should wait for namenode to exit safemode. This was causing TestFsck to fail. (Mahadev Konar via dhruba) HADOOP-2820. The following classes in streaming are removed : StreamLineRecordReader StreamOutputFormat StreamSequenceRecordReader. (Amareshwari Sri Ramadasu via ddas) HADOOP-2819. The following methods in JobConf are removed: getInputKeyClass() setInputKeyClass getInputValueClass() setInputValueClass(Class theClass) setSpeculativeExecution getSpeculativeExecution() (Amareshwari Sri Ramadasu via ddas) HADOOP-2817. Removes deprecated mapred.tasktracker.tasks.maximum and ClusterStatus.getMaxTasks(). (Amareshwari Sri Ramadasu via ddas) HADOOP-2821. Removes deprecated ShellUtil and ToolBase classes from the util package. (Amareshwari Sri Ramadasu via ddas) HADOOP-2934. The namenode was encountreing a NPE while loading leases from the fsimage. Fixed. (dhruba) HADOOP-2938. Some fs commands did not glob paths. (Tsz Wo (Nicholas), SZE via rangadi) HADOOP-2943. Compression of intermediate map output causes failures in the merge. (cdouglas) HADOOP-2870. DataNode and NameNode closes all connections while shutting down. (Hairong Kuang via dhruba) HADOOP-2973. Fix TestLocalDFS for Windows platform. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2971. select multiple times if it returns early in SocketIOWithTimeout. (rangadi) HADOOP-2955. Fix TestCrcCorruption test failures caused by HADOOP-2758 (rangadi) HADOOP-2657. A flush call on the DFSOutputStream flushes the last partial CRC chunk too. (dhruba) HADOOP-2974. IPC unit tests used "0.0.0.0" to connect to server, which is not always supported. (rangadi) HADOOP-2996. Fixes uses of StringBuffer in StreamUtils class. (Dave Brosius via ddas) HADOOP-2995. Fixes StreamBaseRecordReader's getProgress to return a floating point number. (Dave Brosius via ddas) HADOOP-2972. Fix for a NPE in FSDataset.invalidate. (Mahadev Konar via dhruba) HADOOP-2994. Code cleanup for DFSClient: remove redundant conversions from string to string. (Dave Brosius via dhruba) HADOOP-3009. TestFileCreation sometimes fails because restarting minidfscluster sometimes creates datanodes with ports that are different from their original instance. (dhruba) HADOOP-2992. Distributed Upgrade framework works correctly with more than one upgrade object. (Konstantin Shvachko via dhruba) HADOOP-2679. Fix a typo in libhdfs. (Jason via dhruba) HADOOP-2976. When a lease expires, the Namenode ensures that blocks of the file are adequately replicated. (dhruba) HADOOP-2901. Fixes the creation of info servers in the JobClient and JobTracker. Removes the creation from JobClient and removes additional info server from the JobTracker. Also adds the command line utility to view the history files (HADOOP-2896), and fixes bugs in JSPs to do with analysis - HADOOP-2742, HADOOP-2792. (Amareshwari Sri Ramadasu via ddas) HADOOP-2890. If different datanodes report the same block but with different sizes to the namenode, the namenode picks the replica(s) with the largest size as the only valid replica(s). (dhruba) HADOOP-2825. Deprecated MapOutputLocation.getFile() is removed. (Amareshwari Sri Ramadasu via ddas) HADOOP-2806. Fixes a streaming document. (Amareshwari Sriramadasu via ddas) HADOOP-3008. SocketIOWithTimeout throws InterruptedIOException if the thread is interrupted while it is waiting. (rangadi) HADOOP-3006. Fix wrong packet size reported by DataNode when a block is being replicated. (rangadi) HADOOP-3029. Datanode prints log message "firstbadlink" only if it detects a bad connection to another datanode in the pipeline. (dhruba) HADOOP-3030. Release reserved space for file in InMemoryFileSystem if checksum reservation fails. (Devaraj Das via cdouglas) HADOOP-3036. Fix findbugs warnings in UpgradeUtilities. (Konstantin Shvachko via cdouglas) HADOOP-3025. ChecksumFileSystem supports the delete method with the recursive flag. (Mahadev Konar via dhruba) HADOOP-3012. dfs -mv file to user home directory throws exception if the user home directory does not exist. (Mahadev Konar via dhruba) HADOOP-3066. Should not require superuser privilege to query if hdfs is in safe mode (jimk) HADOOP-3040. If the input line starts with the separator char, the key is set as empty. (Amareshwari Sriramadasu via ddas) HADOOP-3080. Removes flush calls from JobHistory. (Amareshwari Sriramadasu via ddas) HADOOP-3086. Adds the testcase missed during commit of hadoop-3040. (Amareshwari Sriramadasu via ddas) HADOOP-3046. Fix the raw comparators for Text and BytesWritables to use the provided length rather than recompute it. (omalley) HADOOP-3094. Fix BytesWritable.toString to avoid extending the sign bit (Owen O'Malley via cdouglas) HADOOP-3067. DFSInputStream's position read does not close the sockets. (rangadi) HADOOP-3073. close() on SocketInputStream or SocketOutputStream should close the underlying channel. (rangadi) HADOOP-3087. Fixes a problem to do with refreshing of loadHistory.jsp. (Amareshwari Sriramadasu via ddas) HADOOP-3065. Better logging message if the rack location of a datanode cannot be determined. (Devaraj Das via dhruba) HADOOP-3064. Commas in a file path should not be treated as delimiters. (Hairong Kuang via shv) HADOOP-2997. Adds test for non-writable serialier. Also fixes a problem introduced by HADOOP-2399. (Tom White via ddas) HADOOP-3114. Fix TestDFSShell on Windows. (Lohit Vijaya Renu via cdouglas) HADOOP-3118. Fix Namenode NPE while loading fsimage after a cluster upgrade from older disk format. (dhruba) HADOOP-3161. Fix FIleUtil.HardLink.getLinkCount on Mac OS. (nigel via omalley) HADOOP-2927. Fix TestDU to acurately calculate the expected file size. (shv via nigel) HADOOP-3123. Fix the native library build scripts to work on Solaris. (tomwhite via omalley) HADOOP-3089. Streaming should accept stderr from task before first key arrives. (Rick Cox via tomwhite) HADOOP-3146. A DFSOutputStream.flush method is renamed as DFSOutputStream.fsync. (dhruba) HADOOP-3165. -put/-copyFromLocal did not treat input file "-" as stdin. (Lohit Vijayarenu via rangadi) HADOOP-3041. Deprecate JobConf.setOutputPath and JobConf.getOutputPath. Deprecate OutputFormatBase. Add FileOutputFormat. Existing output formats extending OutputFormatBase, now extend FileOutputFormat. Add the following APIs in FileOutputFormat: setOutputPath, getOutputPath, getWorkOutputPath. (Amareshwari Sriramadasu via nigel) HADOOP-3083. The fsimage does not store leases. This would have to be reworked in the next release to support appends. (dhruba) HADOOP-3166. Fix an ArrayIndexOutOfBoundsException in the spill thread and make exception handling more promiscuous to catch this condition. (cdouglas) HADOOP-3050. DataNode sends one and only one block report after it registers with the namenode. (Hairong Kuang) HADOOP-3044. NNBench sets the right configuration for the mapper. (Hairong Kuang) HADOOP-3178. Fix GridMix scripts for small and medium jobs to handle input paths differently. (Mukund Madhugiri via nigel) HADOOP-1911. Fix an infinite loop in DFSClient when all replicas of a block are bad (cdouglas) HADOOP-3157. Fix path handling in DistributedCache and TestMiniMRLocalFS. (Doug Cutting via rangadi) HADOOP-3018. Fix the eclipse plug-in contrib wrt removed deprecated methods (taton) HADOOP-3183. Fix TestJobShell to use 'ls' instead of java.io.File::exists since cygwin symlinks are unsupported. (Mahadev konar via cdouglas) HADOOP-3175. Fix FsShell.CommandFormat to handle "-" in arguments. (Edward J. Yoon via rangadi) HADOOP-3220. Safemode message corrected. (shv) HADOOP-3208. Fix WritableDeserializer to set the Configuration on deserialized Writables. (Enis Soztutar via cdouglas) HADOOP-3224. 'dfs -du /dir' does not return correct size. (Lohit Vjayarenu via rangadi) HADOOP-3223. Fix typo in help message for -chmod. (rangadi) HADOOP-1373. checkPath() should ignore case when it compares authoriy. (Edward J. Yoon via rangadi) HADOOP-3204. Fixes a problem to do with ReduceTask's LocalFSMerger not catching Throwable. (Amar Ramesh Kamat via ddas) HADOOP-3229. Report progress when collecting records from the mapper and the combiner. (Doug Cutting via cdouglas) HADOOP-3225. Unwrapping methods of RemoteException should initialize detailedMassage field. (Mahadev Konar, shv, cdouglas) HADOOP-3247. Fix gridmix scripts to use the correct globbing syntax and change maxentToSameCluster to run the correct number of jobs. (Runping Qi via cdouglas) HADOOP-3242. Fix the RecordReader of SequenceFileAsBinaryInputFormat to correctly read from the start of the split and not the beginning of the file. (cdouglas via acmurthy) HADOOP-3256. Encodes the job name used in the filename for history files. (Arun Murthy via ddas) HADOOP-3162. Ensure that comma-separated input paths are treated correctly as multiple input paths. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-3263. Ensure that the job-history log file always follows the pattern of hostname_timestamp_jobid_username_jobname even if username and/or jobname are not specfied. This helps to avoid wrong assumptions made about the job-history log filename in jobhistory.jsp. (acmurthy) HADOOP-3251. Fixes getFilesystemName in JobTracker and LocalJobRunner to use FileSystem.getUri instead of FileSystem.getName. (Arun Murthy via ddas) HADOOP-3237. Fixes TestDFSShell.testErrOutPut on Windows platform. (Mahadev Konar via ddas) HADOOP-3279. TaskTracker checks for SUCCEEDED task status in addition to COMMIT_PENDING status when it fails maps due to lost map. (Devaraj Das) HADOOP-3286. Prevent collisions in gridmix output dirs by increasing the granularity of the timestamp. (Runping Qi via cdouglas) HADOOP-3285. Fix input split locality when the splits align to fs blocks. (omalley) HADOOP-3372. Fix heap management in streaming tests. (Arun Murthy via cdouglas) HADOOP-3031. Fix javac warnings in test classes. (cdouglas) HADOOP-3382. Fix memory leak when files are not cleanly closed (rangadi) HADOOP-3322. Fix to push MetricsRecord for rpc metrics. (Eric Yang via mukund) Release 0.16.4 - 2008-05-05 BUG FIXES HADOOP-3138. DFS mkdirs() should not throw an exception if the directory already exists. (rangadi via mukund) HADOOP-3294. Fix distcp to check the destination length and retry the copy if it doesn't match the src length. (Tsz Wo (Nicholas), SZE via mukund) HADOOP-3186. Fix incorrect permission checkding for mv and renameTo in HDFS. (Tsz Wo (Nicholas), SZE via mukund) Release 0.16.3 - 2008-04-16 BUG FIXES HADOOP-3010. Fix ConcurrentModificationException in ipc.Server.Responder. (rangadi) HADOOP-3154. Catch all Throwables from the SpillThread in MapTask, rather than IOExceptions only. (ddas via cdouglas) HADOOP-3159. Avoid file system cache being overwritten whenever configuration is modified. (Tsz Wo (Nicholas), SZE via hairong) HADOOP-3139. Remove the consistency check for the FileSystem cache in closeAll() that causes spurious warnings and a deadlock. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3195. Fix TestFileSystem to be deterministic. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-3069. Primary name-node should not truncate image when transferring it from the secondary. (shv) HADOOP-3182. Change permissions of the job-submission directory to 777 from 733 to ensure sharing of HOD clusters works correctly. (Tsz Wo (Nicholas), Sze and Amareshwari Sri Ramadasu via acmurthy) Release 0.16.2 - 2008-04-02 BUG FIXES HADOOP-3011. Prohibit distcp from overwriting directories on the destination filesystem with files. (cdouglas) HADOOP-3033. The BlockReceiver thread in the datanode writes data to the block file, changes file position (if needed) and flushes all by itself. The PacketResponder thread does not flush block file. (dhruba) HADOOP-2978. Fixes the JobHistory log format for counters. (Runping Qi via ddas) HADOOP-2985. Fixes LocalJobRunner to tolerate null job output path. Also makes the _temporary a constant in MRConstants.java. (Amareshwari Sriramadasu via ddas) HADOOP-3003. FileSystem cache key is updated after a FileSystem object is created. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-3042. Updates the Javadoc in JobConf.getOutputPath to reflect the actual temporary path. (Amareshwari Sriramadasu via ddas) HADOOP-3007. Tolerate mirror failures while DataNode is replicating blocks as it used to before. (rangadi) HADOOP-2944. Fixes a "Run on Hadoop" wizard NPE when creating a Location from the wizard. (taton) HADOOP-3049. Fixes a problem in MultiThreadedMapRunner to do with catching RuntimeExceptions. (Alejandro Abdelnur via ddas) HADOOP-3039. Fixes a problem to do with exceptions in tasks not killing jobs. (Amareshwari Sriramadasu via ddas) HADOOP-3027. Fixes a problem to do with adding a shutdown hook in FileSystem. (Amareshwari Sriramadasu via ddas) HADOOP-3056. Fix distcp when the target is an empty directory by making sure the directory is created first. (cdouglas and acmurthy via omalley) HADOOP-3070. Protect the trash emptier thread from null pointer exceptions. (Koji Noguchi via omalley) HADOOP-3084. Fix HftpFileSystem to work for zero-lenghth files. (cdouglas) HADOOP-3107. Fix NPE when fsck invokes getListings. (dhruba) HADOOP-3104. Limit MultithreadedMapRunner to have a fixed length queue between the RecordReader and the map threads. (Alejandro Abdelnur via omalley) HADOOP-2833. Do not use "Dr. Who" as the default user in JobClient. A valid user name is required. (Tsz Wo (Nicholas), SZE via rangadi) HADOOP-3128. Throw RemoteException in setPermissions and setOwner of DistributedFileSystem. (shv via nigel) Release 0.16.1 - 2008-03-13 INCOMPATIBLE CHANGES HADOOP-2869. Deprecate SequenceFile.setCompressionType in favor of SequenceFile.createWriter, SequenceFileOutputFormat.setCompressionType, and JobConf.setMapOutputCompressionType. (Arun C Murthy via cdouglas) Configuration changes to hadoop-default.xml: deprecated io.seqfile.compression.type IMPROVEMENTS HADOOP-2371. User guide for file permissions in HDFS. (Robert Chansler via rangadi) HADOOP-3098. Allow more characters in user and group names while using -chown and -chgrp commands. (rangadi) BUG FIXES HADOOP-2789. Race condition in IPC Server Responder that could close connections early. (Raghu Angadi) HADOOP-2785. minor. Fix a typo in Datanode block verification (Raghu Angadi) HADOOP-2788. minor. Fix help message for chgrp shell command (Raghu Angadi). HADOOP-1188. fstime file is updated when a storage directory containing namespace image becomes inaccessible. (shv) HADOOP-2787. An application can set a configuration variable named dfs.umask to set the umask that is used by DFS. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2780. The default socket buffer size for DataNodes is 128K. (dhruba) HADOOP-2716. Superuser privileges for the Balancer. (Tsz Wo (Nicholas), SZE via shv) HADOOP-2754. Filter out .crc files from local file system listing. (Hairong Kuang via shv) HADOOP-2733. Fix compiler warnings in test code. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-2725. Modify distcp to avoid leaving partially copied files at the destination after encountering an error. (Tsz Wo (Nicholas), SZE via cdouglas) HADOOP-2391. Cleanup job output directory before declaring a job as SUCCESSFUL. (Amareshwari Sri Ramadasu via ddas) HADOOP-2808. Minor fix to FileUtil::copy to mind the overwrite formal. (cdouglas) HADOOP-2683. Moving UGI out of the RPC Server. (Tsz Wo (Nicholas), SZE via shv) HADOOP-2814. Fix for NPE in datanode in unit test TestDataTransferProtocol. (Raghu Angadi via dhruba) HADOOP-2811. Dump of counters in job history does not add comma between groups. (runping via omalley) HADOOP-2735. Enables setting TMPDIR for tasks. (Amareshwari Sri Ramadasu via ddas) HADOOP-2843. Fix protections on map-side join classes to enable derivation. (cdouglas via omalley) HADOOP-2840. Fix gridmix scripts to correctly invoke the java sort through the proper jar. (Mukund Madhugiri via cdouglas) HADOOP-2769. TestNNThroughputBnechmark should not use a fixed port for the namenode http port. (omalley) HADOOP-2852. Update gridmix benchmark to avoid an artifically long tail. (cdouglas) HADOOP-2894. Fix a problem to do with tasktrackers failing to connect to JobTracker upon reinitialization. (Owen O'Malley via ddas). HADOOP-2903. Fix exception generated by Metrics while using pushMetric(). (girish vaitheeswaran via dhruba) HADOOP-2904. Fix to RPC metrics to log the correct host name. (girish vaitheeswaran via dhruba) HADOOP-2918. Improve error logging so that dfs writes failure with "No lease on file" can be diagnosed. (dhruba) HADOOP-2923. Add SequenceFileAsBinaryInputFormat, which was missed in the commit for HADOOP-2603. (cdouglas via omalley) HADOOP-2931. IOException thrown by DFSOutputStream had wrong stack trace in some cases. (Michael Bieniosek via rangadi) HADOOP-2883. Write failures and data corruptions on HDFS files. The write timeout is back to what it was on 0.15 release. Also, the datnodes flushes the block file buffered output stream before sending a positive ack for the packet back to the client. (dhruba) HADOOP-2756. NPE in DFSClient while closing DFSOutputStreams under load. (rangadi) HADOOP-2958. Fixed FileBench which broke due to HADOOP-2391 which performs a check for existence of the output directory and a trivial bug in GenericMRLoadGenerator where min/max word lenghts were identical since they were looking at the same config variables (Chris Douglas via acmurthy) HADOOP-2915. Fixed FileSystem.CACHE so that a username is included in the cache key. (Tsz Wo (Nicholas), SZE via nigel) HADOOP-2813. TestDU unit test uses its own directory to run its sequence of tests. (Mahadev Konar via dhruba) Release 0.16.0 - 2008-02-07 INCOMPATIBLE CHANGES HADOOP-1245. Use the mapred.tasktracker.tasks.maximum value configured on each tasktracker when allocating tasks, instead of the value configured on the jobtracker. InterTrackerProtocol version changed from 5 to 6. (Michael Bieniosek via omalley) HADOOP-1843. Removed code from Configuration and JobConf deprecated by HADOOP-785 and a minor fix to Configuration.toString. Specifically the important change is that mapred-default.xml is no longer supported and Configuration no longer supports the notion of default/final resources. (acmurthy) HADOOP-1302. Remove deprecated abacus code from the contrib directory. This also fixes a configuration bug in AggregateWordCount, so that the job now works. (enis) HADOOP-2288. Enhance FileSystem API to support access control. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2184. RPC Support for user permissions and authentication. (Raghu Angadi via dhruba) HADOOP-2185. RPC Server uses any available port if the specified port is zero. Otherwise it uses the specified port. Also combines the configuration attributes for the servers' bind address and port from "x.x.x.x" and "y" to "x.x.x.x:y". Deprecated configuration variables: dfs.info.bindAddress dfs.info.port dfs.datanode.bindAddress dfs.datanode.port dfs.datanode.info.bindAdress dfs.datanode.info.port dfs.secondary.info.bindAddress dfs.secondary.info.port mapred.job.tracker.info.bindAddress mapred.job.tracker.info.port mapred.task.tracker.report.bindAddress tasktracker.http.bindAddress tasktracker.http.port New configuration variables (post HADOOP-2404): dfs.secondary.http.address dfs.datanode.address dfs.datanode.http.address dfs.http.address mapred.job.tracker.http.address mapred.task.tracker.report.address mapred.task.tracker.http.address (Konstantin Shvachko via dhruba) HADOOP-2401. Only the current leaseholder can abandon a block for a HDFS file. ClientProtocol version changed from 20 to 21. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2381. Support permission information in FileStatus. Client Protocol version changed from 21 to 22. (Raghu Angadi via dhruba) HADOOP-2110. Block report processing creates fewer transient objects. Datanode Protocol version changed from 10 to 11. (Sanjay Radia via dhruba) HADOOP-2567. Add FileSystem#getHomeDirectory(), which returns the user's home directory in a FileSystem as a fully-qualified path. FileSystem#getWorkingDirectory() is also changed to return a fully-qualified path, which can break applications that attempt to, e.g., pass LocalFileSystem#getWorkingDir().toString() directly to java.io methods that accept file names. (cutting) HADOOP-2514. Change trash feature to maintain a per-user trash directory, named ".Trash" in the user's home directory. The "fs.trash.root" parameter is no longer used. Full source paths are also no longer reproduced within the trash. HADOOP-2012. Periodic data verification on Datanodes. (Raghu Angadi via dhruba) HADOOP-1707. The DFSClient does not use a local disk file to cache writes to a HDFS file. Changed Data Transfer Version from 7 to 8. (dhruba) HADOOP-2652. Fix permission issues for HftpFileSystem. This is an incompatible change since distcp may not be able to copy files from cluster A (compiled with this patch) to cluster B (compiled with previous versions). (Tsz Wo (Nicholas), SZE via dhruba) NEW FEATURES HADOOP-1857. Ability to run a script when a task fails to capture stack traces. (Amareshwari Sri Ramadasu via ddas) HADOOP-2299. Defination of a login interface. A simple implementation for Unix users and groups. (Hairong Kuang via dhruba) HADOOP-1652. A utility to balance data among datanodes in a HDFS cluster. (Hairong Kuang via dhruba) HADOOP-2085. A library to support map-side joins of consistently partitioned and sorted data sets. (Chris Douglas via omalley) HADOOP-2336. Shell commands to modify file permissions. (rangadi) HADOOP-1298. Implement file permissions for HDFS. (Tsz Wo (Nicholas) & taton via cutting) HADOOP-2447. HDFS can be configured to limit the total number of objects (inodes and blocks) in the file system. (dhruba) HADOOP-2487. Added an option to get statuses for all submitted/run jobs. This information can be used to develop tools for analysing jobs. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-1873. Implement user permissions for Map/Reduce framework. (Hairong Kuang via shv) HADOOP-2532. Add to MapFile a getClosest method that returns the key that comes just before if the key is not present. (stack via tomwhite) HADOOP-1883. Add versioning to Record I/O. (Vivek Ratan via ddas) HADOOP-2603. Add SeqeunceFileAsBinaryInputFormat, which reads sequence files as BytesWritable/BytesWritable regardless of the key and value types used to write the file. (cdouglas via omalley) HADOOP-2367. Add ability to profile a subset of map/reduce tasks and fetch the result to the local filesystem of the submitting application. Also includes a general IntegerRanges extension to Configuration for setting positive, ranged parameters. (Owen O'Malley via cdouglas) IMPROVEMENTS HADOOP-2045. Change committer list on website to a table, so that folks can list their organization, timezone, etc. (cutting) HADOOP-2058. Facilitate creating new datanodes dynamically in MiniDFSCluster. (Hairong Kuang via dhruba) HADOOP-1855. fsck verifies block placement policies and reports violations. (Konstantin Shvachko via dhruba) HADOOP-1604. An system administrator can finalize namenode upgrades without running the cluster. (Konstantin Shvachko via dhruba) HADOOP-1839. Link-ify the Pending/Running/Complete/Killed grid in jobdetails.jsp to help quickly narrow down and see categorized TIPs' details via jobtasks.jsp. (Amar Kamat via acmurthy) HADOOP-1210. Log counters in job history. (Owen O'Malley via ddas) HADOOP-1912. Datanode has two new commands COPY and REPLACE. These are needed for supporting data rebalance. (Hairong Kuang via dhruba) HADOOP-2086. This patch adds the ability to add dependencies to a job (run via JobControl) after construction. (Adrian Woodhead via ddas) HADOOP-1185. Support changing the logging level of a server without restarting the server. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2134. Remove developer-centric requirements from overview.html and keep it end-user focussed, specifically sections related to subversion and building Hadoop. (Jim Kellerman via acmurthy) HADOOP-1989. Support simulated DataNodes. This helps creating large virtual clusters for testing purposes. (Sanjay Radia via dhruba) HADOOP-1274. Support different number of mappers and reducers per TaskTracker to allow administrators to better configure and utilize heterogenous clusters. Configuration changes to hadoop-default.xml: add mapred.tasktracker.map.tasks.maximum (default value of 2) add mapred.tasktracker.reduce.tasks.maximum (default value of 2) remove mapred.tasktracker.tasks.maximum (deprecated for 0.16.0) (Amareshwari Sri Ramadasu via acmurthy) HADOOP-2104. Adds a description to the ant targets. This makes the output of "ant -projecthelp" sensible. (Chris Douglas via ddas) HADOOP-2127. Added a pipes sort example to benchmark trivial pipes application versus trivial java application. (omalley via acmurthy) HADOOP-2113. A new shell command "dfs -text" to view the contents of a gziped or SequenceFile. (Chris Douglas via dhruba) HADOOP-2207. Add a "package" target for contrib modules that permits each to determine what files are copied into release builds. (stack via cutting) HADOOP-1984. Makes the backoff for failed fetches exponential. Earlier, it was a random backoff from an interval. (Amar Kamat via ddas) HADOOP-1327. Include website documentation for streaming. (Rob Weltman via omalley) HADOOP-2000. Rewrite NNBench to measure namenode performance accurately. It now uses the map-reduce framework for load generation. (Mukund Madhugiri via dhruba) HADOOP-2248. Speeds up the framework w.r.t Counters. Also has API updates to the Counters part. (Owen O'Malley via ddas) HADOOP-2326. The initial block report at Datanode startup time has a random backoff period. (Sanjay Radia via dhruba) HADOOP-2432. HDFS includes the name of the file while throwing "File does not exist" exception. (Jim Kellerman via dhruba) HADOOP-2457. Added a 'forrest.home' property to the 'docs' target in build.xml. (acmurthy) HADOOP-2149. A new benchmark for three name-node operation: file create, open, and block report, to evaluate the name-node performance for optimizations or new features. (Konstantin Shvachko via shv) HADOOP-2466. Change FileInputFormat.computeSplitSize to a protected non-static method to allow sub-classes to provide alternate implementations. (Alejandro Abdelnur via acmurthy) HADOOP-2425. Change TextOutputFormat to handle Text specifically for better performance. Make NullWritable implement Comparable. Make TextOutputFormat treat NullWritable like null. (omalley) HADOOP-1719. Improves the utilization of shuffle copier threads. (Amar Kamat via ddas) HADOOP-2390. Added documentation for user-controls for intermediate map-outputs & final job-outputs and native-hadoop libraries. (acmurthy) HADOOP-1660. Add the cwd of the map/reduce task to the java.library.path of the child-jvm to support loading of native libraries distributed via the DistributedCache. (acmurthy) HADOOP-2285. Speeds up TextInputFormat. Also includes updates to the Text API. (Owen O'Malley via cdouglas) HADOOP-2233. Adds a generic load generator for modeling MR jobs. (cdouglas) HADOOP-2369. Adds a set of scripts for simulating a mix of user map/reduce workloads. (Runping Qi via cdouglas) HADOOP-2547. Removes use of a 'magic number' in build.xml. (Hrishikesh via nigel) HADOOP-2268. Fix org.apache.hadoop.mapred.jobcontrol classes to use the List/Map interfaces rather than concrete ArrayList/HashMap classes internally. (Adrian Woodhead via acmurthy) HADOOP-2406. Add a benchmark for measuring read/write performance through the InputFormat interface, particularly with compression. (cdouglas) HADOOP-2131. Allow finer-grained control over speculative-execution. Now users can set it for maps and reduces independently. Configuration changes to hadoop-default.xml: deprecated mapred.speculative.execution add mapred.map.tasks.speculative.execution add mapred.reduce.tasks.speculative.execution (Amareshwari Sri Ramadasu via acmurthy) HADOOP-1965. Interleave sort/spill in teh map-task along with calls to the Mapper.map method. This is done by splitting the 'io.sort.mb' buffer into two and using one half for collecting map-outputs and the other half for sort/spill. (Amar Kamat via acmurthy) HADOOP-2464. Unit tests for chmod, chown, and chgrp using DFS. (Raghu Angadi) HADOOP-1876. Persist statuses of completed jobs in HDFS so that the JobClient can query and get information about decommissioned jobs and also across JobTracker restarts. Configuration changes to hadoop-default.xml: add mapred.job.tracker.persist.jobstatus.active (default value of false) add mapred.job.tracker.persist.jobstatus.hours (default value of 0) add mapred.job.tracker.persist.jobstatus.dir (default value of /jobtracker/jobsInfo) (Alejandro Abdelnur via acmurthy) HADOOP-2077. Added version and build information to STARTUP_MSG for all hadoop daemons to aid error-reporting, debugging etc. (acmurthy) HADOOP-2398. Additional instrumentation for NameNode and RPC server. Add support for accessing instrumentation statistics via JMX. (Sanjay radia via dhruba) HADOOP-2449. A return of the non-MR version of NNBench. (Sanjay Radia via shv) HADOOP-1989. Remove 'datanodecluster' command from bin/hadoop. (Sanjay Radia via shv) HADOOP-1742. Improve JavaDoc documentation for ClientProtocol, DFSClient, and FSNamesystem. (Konstantin Shvachko) HADOOP-2298. Add Ant target for a binary-only distribution. (Hrishikesh via nigel) HADOOP-2509. Add Ant target for Rat report (Apache license header reports). (Hrishikesh via nigel) HADOOP-2469. WritableUtils.clone should take a Configuration instead of a JobConf. (stack via omalley) HADOOP-2659. Introduce superuser permissions for admin operations. (Tsz Wo (Nicholas), SZE via shv) HADOOP-2596. Added a SequenceFile.createWriter api which allows the user to specify the blocksize, replication factor and the buffersize to be used for the underlying HDFS file. (Alejandro Abdelnur via acmurthy) HADOOP-2431. Test HDFS File Permissions. (Hairong Kuang via shv) HADOOP-2232. Add an option to disable Nagle's algorithm in the IPC stack. (Clint Morgan via cdouglas) HADOOP-2342. Created a micro-benchmark for measuring local-file versus hdfs reads. (Owen O'Malley via nigel) HADOOP-2529. First version of HDFS User Guide. (Raghu Angadi) HADOOP-2690. Add jar-test target to build.xml, separating compilation and packaging of the test classes. (Enis Soztutar via cdouglas) OPTIMIZATIONS HADOOP-1898. Release the lock protecting the last time of the last stack dump while the dump is happening. (Amareshwari Sri Ramadasu via omalley) HADOOP-1900. Makes the heartbeat and task event queries interval dependent on the cluster size. (Amareshwari Sri Ramadasu via ddas) HADOOP-2208. Counter update frequency (from TaskTracker to JobTracker) is capped at 1 minute. (Amareshwari Sri Ramadasu via ddas) HADOOP-2284. Reduce the number of progress updates during the sorting in the map task. (Amar Kamat via ddas) BUG FIXES HADOOP-2583. Fixes a bug in the Eclipse plug-in UI to edit locations. Plug-in version is now synchronized with Hadoop version. HADOOP-2100. Remove faulty check for existence of $HADOOP_PID_DIR and let 'mkdir -p' check & create it. (Michael Bieniosek via acmurthy) HADOOP-1642. Ensure jobids generated by LocalJobRunner are unique to avoid collissions and hence job-failures. (Doug Cutting via acmurthy) HADOOP-2096. Close open file-descriptors held by streams while localizing job.xml in the JobTracker and while displaying it on the webui in jobconf.jsp. (Amar Kamat via acmurthy) HADOOP-2098. Log start & completion of empty jobs to JobHistory, which also ensures that we close the file-descriptor of the job's history log opened during job-submission. (Amar Kamat via acmurthy) HADOOP-2112. Adding back changes to build.xml lost while reverting HADOOP-1622 i.e. http://svn.apache.org/viewvc?view=rev&revision=588771. (acmurthy) HADOOP-2089. Fixes the command line argument handling to handle multiple -cacheArchive in Hadoop streaming. (Lohit Vijayarenu via ddas) HADOOP-2071. Fix StreamXmlRecordReader to use a BufferedInputStream wrapped over the DFSInputStream since mark/reset aren't supported by DFSInputStream anymore. (Lohit Vijayarenu via acmurthy) HADOOP-1348. Allow XML comments inside configuration files. (Rajagopal Natarajan and Enis Soztutar via enis) HADOOP-1952. Improve handling of invalid, user-specified classes while configuring streaming jobs such as combiner, input/output formats etc. Now invalid options are caught, logged and jobs are failed early. (Lohit Vijayarenu via acmurthy) HADOOP-2151. FileSystem.globPaths validates the list of Paths that it returns. (Lohit Vijayarenu via dhruba) HADOOP-2121. Cleanup DFSOutputStream when the stream encountered errors when Datanodes became full. (Raghu Angadi via dhruba) HADOOP-1130. The FileSystem.closeAll() method closes all existing DFSClients. (Chris Douglas via dhruba) HADOOP-2204. DFSTestUtil.waitReplication was not waiting for all replicas to get created, thus causing unit test failure. (Raghu Angadi via dhruba) HADOOP-2078. An zero size file may have no blocks associated with it. (Konstantin Shvachko via dhruba) HADOOP-2212. ChecksumFileSystem.getSumBufferSize might throw java.lang.ArithmeticException. The fix is to initialize bytesPerChecksum to 0. (Michael Bieniosek via ddas) HADOOP-2216. Fix jobtasks.jsp to ensure that it first collects the taskids which satisfy the filtering criteria and then use that list to print out only the required task-reports, previously it was oblivious to the filtering and hence used the wrong index into the array of task-reports. (Amar Kamat via acmurthy) HADOOP-2272. Fix findbugs target to reflect changes made to the location of the streaming jar file by HADOOP-2207. (Adrian Woodhead via nigel) HADOOP-2244. Fixes the MapWritable.readFields to clear the instance field variable every time readFields is called. (Michael Stack via ddas). HADOOP-2245. Fixes LocalJobRunner to include a jobId in the mapId. Also, adds a testcase for JobControl. (Adrian Woodhead via ddas). HADOOP-2275. Fix erroneous detection of corrupted file when namenode fails to allocate any datanodes for newly allocated block. (Dhruba Borthakur via dhruba) HADOOP-2256. Fix a buf in the namenode that could cause it to encounter an infinite loop while deleting excess replicas that were created by block rebalancing. (Hairong Kuang via dhruba) HADOOP-2209. SecondaryNamenode process exits if it encounters exceptions that it cannot handle. (Dhruba Borthakur via dhruba) HADOOP-2314. Prevent TestBlockReplacement from occasionally getting into an infinite loop. (Hairong Kuang via dhruba) HADOOP-2300. This fixes a bug where mapred.tasktracker.tasks.maximum would be ignored even if it was set in hadoop-site.xml. (Amareshwari Sri Ramadasu via ddas) HADOOP-2349. Improve code layout in file system transaction logging code. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2368. Fix unit tests on Windows. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2363. This fix allows running multiple instances of the unit test in parallel. The bug was introduced in HADOOP-2185 that changed port-rolling behaviour. (Konstantin Shvachko via dhruba) HADOOP-2271. Fix chmod task to be non-parallel. (Adrian Woodhead via omalley) HADOOP-2313. Fail the build if building libhdfs fails. (nigel via omalley) HADOOP-2359. Remove warning for interruptted exception when closing down minidfs. (dhruba via omalley) HADOOP-1841. Prevent slow clients from consuming threads in the NameNode. (dhruba) HADOOP-2323. JobTracker.close() should not print stack traces for normal exit. (jimk via cutting) HADOOP-2376. Prevents sort example from overriding the number of maps. (Owen O'Malley via ddas) HADOOP-2434. FSDatasetInterface read interface causes HDFS reads to occur in 1 byte chunks, causing performance degradation. (Raghu Angadi via dhruba) HADOOP-2459. Fix package target so that src/docs/build files are not included in the release. (nigel) HADOOP-2215. Fix documentation in cluster_setup.html & mapred_tutorial.html reflect that mapred.tasktracker.tasks.maximum has been superceeded by mapred.tasktracker.{map|reduce}.tasks.maximum. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-2459. Fix package target so that src/docs/build files are not included in the release. (nigel) HADOOP-2352. Remove AC_CHECK_LIB for libz and liblzo to ensure that libhadoop.so doesn't have a dependency on them. (acmurthy) HADOOP-2453. Fix the configuration for wordcount-simple example in Hadoop Pipes which currently produces an XML parsing error. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-2476. Unit test failure while reading permission bits of local file system (on Windows) fixed. (Raghu Angadi via dhruba) HADOOP-2247. Fine-tune the strategies for killing mappers and reducers due to failures while fetching map-outputs. Now the map-completion times and number of currently running reduces are taken into account by the JobTracker before killing the mappers, while the progress made by the reducer and the number of fetch-failures vis-a-vis total number of fetch-attempts are taken into account before teh reducer kills itself. (Amar Kamat via acmurthy) HADOOP-2452. Fix eclipse plug-in build.xml to refers to the right location where hadoop-*-core.jar is generated. (taton) HADOOP-2492. Additional debugging in the rpc server to better diagnose ConcurrentModificationException. (dhruba) HADOOP-2344. Enhance the utility for executing shell commands to read the stdout/stderr streams while waiting for the command to finish (to free up the buffers). Also, this patch throws away stderr of the DF utility. @deprecated org.apache.hadoop.fs.ShellCommand for org.apache.hadoop.util.Shell org.apache.hadoop.util.ShellUtil for org.apache.hadoop.util.Shell.ShellCommandExecutor (Amar Kamat via acmurthy) HADOOP-2511. Fix a javadoc warning in org.apache.hadoop.util.Shell introduced by HADOOP-2344. (acmurthy) HADOOP-2442. Fix TestLocalFileSystemPermission.testLocalFSsetOwner to work on more platforms. (Raghu Angadi via nigel) HADOOP-2488. Fix a regression in random read performance. (Michael Stack via rangadi) HADOOP-2523. Fix TestDFSShell.testFilePermissions on Windows. (Raghu Angadi via nigel) HADOOP-2535. Removed support for deprecated mapred.child.heap.size and fixed some indentation issues in TaskRunner. (acmurthy) Configuration changes to hadoop-default.xml: remove mapred.child.heap.size HADOOP-2512. Fix error stream handling in Shell. Use exit code to detect shell command errors in RawLocalFileSystem. (Raghu Angadi) HADOOP-2446. Fixes TestHDFSServerPorts and TestMRServerPorts so they do not rely on statically configured ports and cleanup better. (nigel) HADOOP-2537. Make build process compatible with Ant 1.7.0. (Hrishikesh via nigel) HADOOP-1281. Ensure running tasks of completed map TIPs (e.g. speculative tasks) are killed as soon as the TIP completed. (acmurthy) HADOOP-2571. Suppress a suprious warning in test code. (cdouglas) HADOOP-2481. NNBench report its progress periodically. (Hairong Kuang via dhruba) HADOOP-2601. Start name-node on a free port for TestNNThroughputBenchmark. (Konstantin Shvachko) HADOOP-2494. Set +x on contrib/*/bin/* in packaged tar bundle. (stack via tomwhite) HADOOP-2605. Remove bogus leading slash in task-tracker report bindAddress. (Konstantin Shvachko) HADOOP-2620. Trivial. 'bin/hadoop fs -help' did not list chmod, chown, and chgrp. (Raghu Angadi) HADOOP-2614. The DFS WebUI accesses are configured to be from the user specified by dfs.web.ugi. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2543. Implement a "no-permission-checking" mode for smooth upgrade from a pre-0.16 install of HDFS. (Hairong Kuang via dhruba) HADOOP-290. A DataNode log message now prints the target of a replication request correctly. (dhruba) HADOOP-2538. Redirect to a warning, if plaintext parameter is true but the filter parameter is not given in TaskLogServlet. (Michael Bieniosek via enis) HADOOP-2582. Prevent 'bin/hadoop fs -copyToLocal' from creating zero-length files when the src does not exist. (Lohit Vijayarenu via cdouglas) HADOOP-2189. Incrementing user counters should count as progress. (ddas) HADOOP-2649. The NameNode periodically computes replication work for the datanodes. The periodicity of this computation is now configurable. (dhruba) HADOOP-2549. Correct disk size computation so that data-nodes could switch to other local drives if current is full. (Hairong Kuang via shv) HADOOP-2633. Fsck should call name-node methods directly rather than through rpc. (Tsz Wo (Nicholas), SZE via shv) HADOOP-2687. Modify a few log message generated by dfs client to be logged only at INFO level. (stack via dhruba) HADOOP-2402. Fix BlockCompressorStream to ensure it buffers data before sending it down to the compressor so that each write call doesn't compress. (Chris Douglas via acmurthy) HADOOP-2645. The Metrics initialization code does not throw exceptions when servers are restarted by MiniDFSCluster. (Sanjay Radia via dhruba) HADOOP-2691. Fix a race condition that was causing the DFSClient to erroneously remove a good datanode from a pipeline that actually had another datanode that was bad. (dhruba) HADOOP-1195. All code in FSNamesystem checks the return value of getDataNode for null before using it. (dhruba) HADOOP-2640. Fix a bug in MultiFileSplitInputFormat that was always returning 1 split in some circumstances. (Enis Soztutar via nigel) HADOOP-2626. Fix paths with special characters to work correctly with the local filesystem. (Thomas Friol via cutting) HADOOP-2646. Fix SortValidator to work with fully-qualified working directories. (Arun C Murthy via nigel) HADOOP-2092. Added a ping mechanism to the pipes' task to periodically check if the parent Java task is running, and exit if the parent isn't alive and responding. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-2714. TestDecommission failed on windows because the replication request was timing out. (dhruba) HADOOP-2576. Namenode performance degradation over time triggered by large heartbeat interval. (Raghu Angadi) HADOOP-2713. TestDatanodeDeath failed on windows because the replication request was timing out. (dhruba) HADOOP-2639. Fixes a problem to do with incorrect maintenance of values for runningMapTasks/runningReduceTasks. (Amar Kamat and Arun Murthy via ddas) HADOOP-2723. Fixed the check for checking whether to do user task profiling. (Amareshwari Sri Ramadasu via omalley) HADOOP-2734. Link forrest docs to new http://hadoop.apache.org (Doug Cutting via nigel) HADOOP-2641. Added Apache license headers to 95 files. (nigel) HADOOP-2732. Fix bug in path globbing. (Hairong Kuang via nigel) HADOOP-2404. Fix backwards compatability with hadoop-0.15 configuration files that was broken by HADOOP-2185. (omalley) HADOOP-2755. Fix fsck performance degradation because of permissions issue. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-2768. Fix performance regression caused by HADOOP-1707. (dhruba borthakur via nigel) HADOOP-3108. Fix NPE in setPermission and setOwner. (shv) Release 0.15.3 - 2008-01-18 BUG FIXES HADOOP-2562. globPaths supports {ab,cd}. (Hairong Kuang via dhruba) HADOOP-2540. fsck reports missing blocks incorrectly. (dhruba) HADOOP-2570. "work" directory created unconditionally, and symlinks created from the task cwds. HADOOP-2574. Fixed mapred_tutorial.xml to correct minor errors with the WordCount examples. (acmurthy) Release 0.15.2 - 2008-01-02 BUG FIXES HADOOP-2246. Moved the changelog for HADOOP-1851 from the NEW FEATURES section to the INCOMPATIBLE CHANGES section. (acmurthy) HADOOP-2238. Fix TaskGraphServlet so that it sets the content type of the response appropriately. (Paul Saab via enis) HADOOP-2129. Fix so that distcp works correctly when source is HDFS but not the default filesystem. HDFS paths returned by the listStatus() method are now fully-qualified. (cutting) HADOOP-2378. Fixes a problem where the last task completion event would get created after the job completes. (Alejandro Abdelnur via ddas) HADOOP-2228. Checks whether a job with a certain jobId is already running and then tries to create the JobInProgress object. (Johan Oskarsson via ddas) HADOOP-2422. dfs -cat multiple files fail with 'Unable to write to output stream'. (Raghu Angadi via dhruba) HADOOP-2460. When the namenode encounters ioerrors on writing a transaction log, it stops writing new transactions to that one. (Raghu Angadi via dhruba) HADOOP-2227. Use the LocalDirAllocator uniformly for handling all of the temporary storage required for a given task. It also implies that mapred.local.dir.minspacestart is handled by checking if there is enough free-space on any one of the available disks. (Amareshwari Sri Ramadasu via acmurthy) HADOOP-2437. Fix the LocalDirAllocator to choose the seed for the round-robin disk selections randomly. This helps in spreading data across multiple partitions much better. (acmurhty) HADOOP-2486. When the list of files from the InMemoryFileSystem is obtained for merging, this patch will ensure that only those files whose checksums have also got created (renamed) are returned. (ddas) HADOOP-2456. Hardcode English locale to prevent NumberFormatException from occurring when starting the NameNode with certain locales. (Matthias Friedrich via nigel) IMPROVEMENTS HADOOP-2160. Remove project-level, non-user documentation from releases, since it's now maintained in a separate tree. (cutting) HADOOP-1327. Add user documentation for streaming. (cutting) HADOOP-2382. Add hadoop-default.html to subversion. (cutting) HADOOP-2158. hdfsListDirectory calls FileSystem.listStatus instead of FileSystem.listPaths. This reduces the number of RPC calls on the namenode, thereby improving scalability. (Christian Kunz via dhruba) Release 0.15.1 - 2007-11-27 INCOMPATIBLE CHANGES HADOOP-713. Reduce CPU usage on namenode while listing directories. FileSystem.listPaths does not return the size of the entire subtree. Introduced a new API ClientProtocol.getContentLength that returns the size of the subtree. (Dhruba Borthakur via dhruba) IMPROVEMENTS HADOOP-1917. Addition of guides/tutorial for better overall documentation for Hadoop. Specifically: * quickstart.html is targetted towards first-time users and helps them setup a single-node cluster and play with Hadoop. * cluster_setup.html helps admins to configure and setup non-trivial hadoop clusters. * mapred_tutorial.html is a comprehensive Map-Reduce tutorial. (acmurthy) BUG FIXES HADOOP-2174. Removed the unnecessary Reporter.setStatus call from FSCopyFilesMapper.close which led to a NPE since the reporter isn't valid in the close method. (Chris Douglas via acmurthy) HADOOP-2172. Restore performance of random access to local files by caching positions of local input streams, avoiding a system call. (cutting) HADOOP-2205. Regenerate the Hadoop website since some of the changes made by HADOOP-1917 weren't correctly copied over to the trunk/docs directory. Also fixed a couple of minor typos and broken links. (acmurthy) Release 0.15.0 - 2007-11-2 INCOMPATIBLE CHANGES HADOOP-1708. Make files appear in namespace as soon as they are created. (Dhruba Borthakur via dhruba) HADOOP-999. A HDFS Client immediately informs the NameNode of a new file creation. ClientProtocol version changed from 14 to 15. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-932. File locking interfaces and implementations (that were earlier deprecated) are removed. Client Protocol version changed from 15 to 16. (Raghu Angadi via dhruba) HADOOP-1621. FileStatus is now a concrete class and FileSystem.listPaths is deprecated and replaced with listStatus. (Chris Douglas via omalley) HADOOP-1656. The blockSize of a file is stored persistently in the file inode. (Dhruba Borthakur via dhruba) HADOOP-1838. The blocksize of files created with an earlier release is set to the default block size. (Dhruba Borthakur via dhruba) HADOOP-785. Add support for 'final' Configuration parameters, removing support for 'mapred-default.xml', and changing 'hadoop-site.xml' to not override other files. Now folks should generally use 'hadoop-site.xml' for all configurations. Values with a 'final' tag may not be overridden by subsequently loaded configuration files, e.g., by jobs. (Arun C. Murthy via cutting) HADOOP-1846. DatanodeReport in ClientProtocol can report live datanodes, dead datanodes or all datanodes. Client Protocol version changed from 17 to 18. (Hairong Kuang via dhruba) HADOOP-1851. Permit specification of map output compression type and codec, independent of the final output's compression parameters. (Arun C Murthy via cutting) HADOOP-1819. Jobtracker cleanups, including binding ports before clearing state directories, so that inadvertently starting a second jobtracker doesn't trash one that's already running. Removed method JobTracker.getTracker() because the static variable, which stored the value caused initialization problems. (omalley via cutting) NEW FEATURES HADOOP-89. A client can access file data even before the creator has closed the file. Introduce a new command "tail" from dfs shell. (Dhruba Borthakur via dhruba) HADOOP-1636. Allow configuration of the number of jobs kept in memory by the JobTracker. (Michael Bieniosek via omalley) HADOOP-1667. Reorganize CHANGES.txt into sections to make it easier to read. Also remove numbering, to make merging easier. (cutting) HADOOP-1610. Add metrics for failed tasks. (Devaraj Das via tomwhite) HADOOP-1767. Add "bin/hadoop job -list" sub-command. (taton via cutting) HADOOP-1351. Add "bin/hadoop job [-fail-task|-kill-task]" sub-commands to terminate a particular task-attempt. (Enis Soztutar via acmurthy) HADOOP-1880. SleepJob : An example job that sleeps at each map and reduce task. (enis) HADOOP-1809. Add a link in web site to #hadoop IRC channel. (enis) HADOOP-1894. Add percentage graphs and mapred task completion graphs to Web User Interface. Users not using Firefox may install a plugin to their browsers to see svg graphics. (enis) HADOOP-1914. Introduce a new NamenodeProtocol to allow secondary namenodes and rebalancing processes to communicate with a primary namenode. (Hairong Kuang via dhruba) HADOOP-1963. Add a FileSystem implementation for the Kosmos Filesystem (KFS). (Sriram Rao via cutting) HADOOP-1822. Allow the specialization and configuration of socket factories. Provide a StandardSocketFactory, and a SocksSocketFactory to allow the use of SOCKS proxies. (taton). HADOOP-1968. FileSystem supports wildcard input syntax "{ }". (Hairong Kuang via dhruba) HADOOP-2566. Add globStatus method to the FileSystem interface and deprecate globPath and listPath. (Hairong Kuang via hairong) OPTIMIZATIONS HADOOP-1910. Reduce the number of RPCs that DistributedFileSystem.create() makes to the namenode. (Raghu Angadi via dhruba) HADOOP-1565. Reduce memory usage of NameNode by replacing TreeMap in HDFS Namespace with ArrayList. (Dhruba Borthakur via dhruba) HADOOP-1743. Change DFS INode from a nested class to standalone class, with specialized subclasses for directories and files, to save memory on the namenode. (Konstantin Shvachko via cutting) HADOOP-1759. Change file name in INode from String to byte[], saving memory on the namenode. (Konstantin Shvachko via cutting) HADOOP-1766. Save memory in namenode by having BlockInfo extend Block, and replace many uses of Block with BlockInfo. (Konstantin Shvachko via cutting) HADOOP-1687. Save memory in namenode by optimizing BlockMap representation. (Konstantin Shvachko via cutting) HADOOP-1774. Remove use of INode.parent in Block CRC upgrade. (Raghu Angadi via dhruba) HADOOP-1788. Increase the buffer size on the Pipes command socket. (Amareshwari Sri Ramadasu and Christian Kunz via omalley) BUG FIXES HADOOP-1946. The Datanode code does not need to invoke du on every heartbeat. (Hairong Kuang via dhruba) HADOOP-1935. Fix a NullPointerException in internalReleaseCreate. (Dhruba Borthakur) HADOOP-1933. The nodes listed in include and exclude files are always listed in the datanode report. (Raghu Angadi via dhruba) HADOOP-1953. The job tracker should wait beteween calls to try and delete the system directory (Owen O'Malley via devaraj) HADOOP-1932. TestFileCreation fails with message saying filestatus.dat is of incorrect size. (Dhruba Borthakur via dhruba) HADOOP-1573. Support for 0 reducers in PIPES. (Owen O'Malley via devaraj) HADOOP-1500. Fix typographical errors in the DFS WebUI. (Nigel Daley via dhruba) HADOOP-1076. Periodic checkpoint can continue even if an earlier checkpoint encountered an error. (Dhruba Borthakur via dhruba) HADOOP-1887. The Namenode encounters an ArrayIndexOutOfBoundsException while listing a directory that had a file that was being actively written to. (Dhruba Borthakur via dhruba) HADOOP-1904. The Namenode encounters an exception because the list of blocks per datanode-descriptor was corrupted. (Konstantin Shvachko via dhruba) HADOOP-1762. The Namenode fsimage does not contain a list of Datanodes. (Raghu Angadi via dhruba) HADOOP-1890. Removed debugging prints introduced by HADOOP-1774. (Raghu Angadi via dhruba) HADOOP-1763. Too many lost task trackers on large clusters due to insufficient number of RPC handler threads on the JobTracker. (Devaraj Das) HADOOP-1463. HDFS report correct usage statistics for disk space used by HDFS. (Hairong Kuang via dhruba) HADOOP-1692. In DFS ant task, don't cache the Configuration. (Chris Douglas via cutting) HADOOP-1726. Remove lib/jetty-ext/ant.jar. (omalley) HADOOP-1772. Fix hadoop-daemon.sh script to get correct hostname under Cygwin. (Tsz Wo (Nicholas), SZE via cutting) HADOOP-1749. Change TestDFSUpgrade to sort files, fixing sporadic test failures. (Enis Soztutar via cutting) HADOOP-1748. Fix tasktracker to be able to launch tasks when log directory is relative. (omalley via cutting) HADOOP-1775. Fix a NullPointerException and an IllegalArgumentException in MapWritable. (Jim Kellerman via cutting) HADOOP-1795. Fix so that jobs can generate output file names with special characters. (Fr??d??ric Bertin via cutting) HADOOP-1810. Fix incorrect value type in MRBench (SmallJobs) (Devaraj Das via tomwhite) HADOOP-1806. Fix ant task to compile again, also fix default builds to compile ant tasks. (Chris Douglas via cutting) HADOOP-1758. Fix escape processing in librecordio to not be quadratic. (Vivek Ratan via cutting) HADOOP-1817. Fix MultiFileSplit to read and write the split length, so that it is not always zero in map tasks. (Thomas Friol via cutting) HADOOP-1853. Fix contrib/streaming to accept multiple -cacheFile options. (Prachi Gupta via cutting) HADOOP-1818. Fix MultiFileInputFormat so that it does not return empty splits when numPaths < numSplits. (Thomas Friol via enis) HADOOP-1840. Fix race condition which leads to task's diagnostic messages getting lost. (acmurthy) HADOOP-1885. Fix race condition in MiniDFSCluster shutdown. (Chris Douglas via nigel) HADOOP-1889. Fix path in EC2 scripts for building your own AMI. (tomwhite) HADOOP-1892. Fix a NullPointerException in the JobTracker when trying to fetch a task's diagnostic messages from the JobClient. (Amar Kamat via acmurthy) HADOOP-1897. Completely remove about.html page from the web site. (enis) HADOOP-1907. Fix null pointer exception when getting task diagnostics in JobClient. (Christian Kunz via omalley) HADOOP-1882. Remove spurious asterisks from decimal number displays. (Raghu Angadi via cutting) HADOOP-1783. Make S3 FileSystem return Paths fully-qualified with scheme and host. (tomwhite) HADOOP-1925. Make pipes' autoconf script look for libsocket and libnsl, so that it can compile under Solaris. (omalley) HADOOP-1940. TestDFSUpgradeFromImage must shut down its MiniDFSCluster. (Chris Douglas via nigel) HADOOP-1930. Fix the blame for failed fetchs on the right host. (Arun C. Murthy via omalley) HADOOP-1934. Fix the platform name on Mac to use underscores rather than spaces. (omalley) HADOOP-1959. Use "/" instead of File.separator in the StatusHttpServer. (jimk via omalley) HADOOP-1626. Improve dfsadmin help messages. (Lohit Vijayarenu via dhruba) HADOOP-1695. The SecondaryNamenode waits for the Primary NameNode to start up. (Dhruba Borthakur) HADOOP-1983. Have Pipes flush the command socket when progress is sent to prevent timeouts during long computations. (omalley) HADOOP-1875. Non-existant directories or read-only directories are filtered from dfs.client.buffer.dir. (Hairong Kuang via dhruba) HADOOP-1992. Fix the performance degradation in the sort validator. (acmurthy via omalley) HADOOP-1874. Move task-outputs' promotion/discard to a separate thread distinct from the main heartbeat-processing thread. The main upside being that we do not lock-up the JobTracker during HDFS operations, which otherwise may lead to lost tasktrackers if the NameNode is unresponsive. (Devaraj Das via acmurthy) HADOOP-2026. Namenode prints out one log line for "Number of transactions" at most once every minute. (Dhruba Borthakur) HADOOP-2022. Ensure that status information for successful tasks is correctly recorded at the JobTracker, so that, for example, one may view correct information via taskdetails.jsp. This bug was introduced by HADOOP-1874. (Amar Kamat via acmurthy) HADOOP-2031. Correctly maintain the taskid which takes the TIP to completion, failing which the case of lost tasktrackers isn't handled properly i.e. the map TIP is incorrectly left marked as 'complete' and it is never rescheduled elsewhere, leading to hung reduces. (Devaraj Das via acmurthy) HADOOP-2018. The source datanode of a data transfer waits for a response from the target datanode before closing the data stream. (Hairong Kuang via dhruba) HADOOP-2023. Disable TestLocalDirAllocator on Windows. (Hairong Kuang via nigel) HADOOP-2016. Ignore status-updates from FAILED/KILLED tasks at the TaskTracker. This fixes a race-condition which caused the tasks to wrongly remain in the RUNNING state even after being killed by the JobTracker and thus handicap the cleanup of the task's output sub-directory. (acmurthy) HADOOP-1771. Fix a NullPointerException in streaming caused by an IOException in MROutputThread. (lohit vijayarenu via nigel) HADOOP-2028. Fix distcp so that the log dir does not need to be specified and the destination does not need to exist. (Chris Douglas via nigel) HADOOP-2044. The namenode protects all lease manipulations using a sortedLease lock. (Dhruba Borthakur) HADOOP-2051. The TaskCommit thread should not die for exceptions other than the InterruptedException. This behavior is there for the other long running threads in the JobTracker. (Arun C Murthy via ddas) HADOOP-1973. The FileSystem object would be accessed on the JobTracker through a RPC in the InterTrackerProtocol. The check for the object being null was missing and hence NPE would be thrown sometimes. This issue fixes that problem. (Amareshwari Sri Ramadasu via ddas) HADOOP-2033. The SequenceFile.Writer.sync method was a no-op, which caused very uneven splits for applications like distcp that count on them. (omalley) HADOOP-2070. Added a flush method to pipes' DownwardProtocol and call that before waiting for the application to finish to ensure all buffered data is flushed. (Owen O'Malley via acmurthy) HADOOP-2080. Fixed calculation of the checksum file size when the values are large. (omalley) HADOOP-2048. Change error handling in distcp so that each map copies as much as possible before reporting the error. Also report progress on every copy. (Chris Douglas via omalley) HADOOP-2073. Change size of VERSION file after writing contents to it. (Konstantin Shvachko via dhruba) HADOOP-2102. Fix the deprecated ToolBase to pass its Configuration object to the superceding ToolRunner to ensure it picks up the appropriate configuration resources. (Dennis Kubes and Enis Soztutar via acmurthy) HADOOP-2103. Fix minor javadoc bugs introduce by HADOOP-2046. (Nigel Daley via acmurthy) IMPROVEMENTS HADOOP-1908. Restructure data node code so that block sending and receiving are seperated from data transfer header handling. (Hairong Kuang via dhruba) HADOOP-1921. Save the configuration of completed/failed jobs and make them available via the web-ui. (Amar Kamat via devaraj) HADOOP-1266. Remove dependency of package org.apache.hadoop.net on org.apache.hadoop.dfs. (Hairong Kuang via dhruba) HADOOP-1779. Replace INodeDirectory.getINode() by a getExistingPathINodes() to allow the retrieval of all existing INodes along a given path in a single lookup. This facilitates removal of the 'parent' field in the inode. (Christophe Taton via dhruba) HADOOP-1756. Add toString() to some Writable-s. (ab) HADOOP-1727. New classes: MapWritable and SortedMapWritable. (Jim Kellerman via ab) HADOOP-1651. Improve progress reporting. (Devaraj Das via tomwhite) HADOOP-1595. dfsshell can wait for a file to achieve its intended replication target. (Tsz Wo (Nicholas), SZE via dhruba) HADOOP-1693. Remove un-needed log fields in DFS replication classes, since the log may be accessed statically. (Konstantin Shvachko via cutting) HADOOP-1231. Add generics to Mapper and Reducer interfaces. (tomwhite via cutting) HADOOP-1436. Improved command-line APIs, so that all tools need not subclass ToolBase, and generic parameter parser is public. (Enis Soztutar via cutting) HADOOP-1703. DFS-internal code cleanups, removing several uses of the obsolete UTF8. (Christophe Taton via cutting) HADOOP-1731. Add Hadoop's version to contrib jar file names. (cutting) HADOOP-1689. Make shell scripts more portable. All shell scripts now explicitly depend on bash, but do not require that bash be installed in a particular location, as long as it is on $PATH. (cutting) HADOOP-1744. Remove many uses of the deprecated UTF8 class from the HDFS namenode. (Christophe Taton via cutting) HADOOP-1654. Add IOUtils class, containing generic io-related utility methods. (Enis Soztutar via cutting) HADOOP-1158. Change JobTracker to record map-output transmission errors and use them to trigger speculative re-execution of tasks. (Arun C Murthy via cutting) HADOOP-1601. Change GenericWritable to use ReflectionUtils for instance creation, avoiding classloader issues, and to implement Configurable. (Enis Soztutar via cutting) HADOOP-1750. Log standard output and standard error when forking task processes. (omalley via cutting) HADOOP-1803. Generalize build.xml to make files in all src/contrib/*/bin directories executable. (stack via cutting) HADOOP-1739. Let OS always choose the tasktracker's umbilical port. Also switch default address for umbilical connections to loopback. (cutting) HADOOP-1812. Let OS choose ports for IPC and RPC unit tests. (cutting) HADOOP-1825. Create $HADOOP_PID_DIR when it does not exist. (Michael Bieniosek via cutting) HADOOP-1425. Replace uses of ToolBase with the Tool interface. (Enis Soztutar via cutting) HADOOP-1569. Reimplement DistCP to use the standard FileSystem/URI code in Hadoop so that you can copy from and to all of the supported file systems.(Chris Douglas via omalley) HADOOP-1018. Improve documentation w.r.t handling of lost hearbeats between TaskTrackers and JobTracker. (acmurthy) HADOOP-1718. Add ant targets for measuring code coverage with clover. (simonwillnauer via nigel) HADOOP-1592. Log error messages to the client console when tasks fail. (Amar Kamat via cutting) HADOOP-1879. Remove some unneeded casts. (Nilay Vaish via cutting) HADOOP-1878. Add space between priority links on job details page. (Thomas Friol via cutting) HADOOP-120. In ArrayWritable, prevent creation with null value class, and improve documentation. (Cameron Pope via cutting) HADOOP-1926. Add a random text writer example/benchmark so that we can benchmark compression codecs on random data. (acmurthy via omalley) HADOOP-1906. Warn the user if they have an obsolete madred-default.xml file in their configuration directory. (acmurthy via omalley) HADOOP-1971. Warn when job does not specify a jar. (enis via cutting) HADOOP-1942. Increase the concurrency of transaction logging to edits log. Reduce the number of syncs by double-buffering the changes to the transaction log. (Dhruba Borthakur) HADOOP-2046. Improve mapred javadoc. (Arun C. Murthy via cutting) HADOOP-2105. Improve overview.html to clarify supported platforms, software pre-requisites for hadoop, how to install them on various platforms and a better general description of hadoop and it's utility. (Jim Kellerman via acmurthy) Release 0.14.4 - 2007-11-26 BUG FIXES HADOOP-2140. Add missing Apache Licensing text at the front of several C and C++ files. HADOOP-2169. Fix the DT_SONAME field of libhdfs.so to set it to the correct value of 'libhdfs.so', currently it is set to the absolute path of libhdfs.so. (acmurthy) HADOOP-2001. Make the job priority updates and job kills synchronized on the JobTracker. Deadlock was seen in the JobTracker because of the lack of this synchronization. (Arun C Murthy via ddas) Release 0.14.3 - 2007-10-19 BUG FIXES HADOOP-2053. Fixed a dangling reference to a memory buffer in the map output sorter. (acmurthy via omalley) HADOOP-2036. Fix a NullPointerException in JvmMetrics class. (nigel) HADOOP-2043. Release 0.14.2 was compiled with Java 1.6 rather than Java 1.5. (cutting) Release 0.14.2 - 2007-10-09 BUG FIXES HADOOP-1948. Removed spurious error message during block crc upgrade. (Raghu Angadi via dhruba) HADOOP-1862. reduces are getting stuck trying to find map outputs. (Arun C. Murthy via ddas) HADOOP-1977. Fixed handling of ToolBase cli options in JobClient. (enis via omalley) HADOOP-1972. Fix LzoCompressor to ensure the user has actually asked to finish compression. (arun via omalley) HADOOP-1970. Fix deadlock in progress reporting in the task. (Vivek Ratan via omalley) HADOOP-1978. Name-node removes edits.new after a successful startup. (Konstantin Shvachko via dhruba) HADOOP-1955. The Namenode tries to not pick the same source Datanode for a replication request if the earlier replication request for the same block and that source Datanode had failed. (Raghu Angadi via dhruba) HADOOP-1961. The -get option to dfs-shell works when a single filename is specified. (Raghu Angadi via dhruba) HADOOP-1997. TestCheckpoint closes the edits file after writing to it, otherwise the rename of this file on Windows fails. (Konstantin Shvachko via dhruba) Release 0.14.1 - 2007-09-04 BUG FIXES HADOOP-1740. Fix null pointer exception in sorting map outputs. (Devaraj Das via omalley) HADOOP-1790. Fix tasktracker to work correctly on multi-homed boxes. (Torsten Curdt via cutting) HADOOP-1798. Fix jobtracker to correctly account for failed tasks. (omalley via cutting) Release 0.14.0 - 2007-08-17 INCOMPATIBLE CHANGES 1. HADOOP-1134. CONFIG/API - dfs.block.size must now be a multiple of io.byte.per.checksum, otherwise new files can not be written. LAYOUT - DFS layout version changed from -6 to -7, which will require an upgrade from previous versions. PROTOCOL - Datanode RPC protocol version changed from 7 to 8. 2. HADOOP-1283 API - deprecated file locking API. 3. HADOOP-894 PROTOCOL - changed ClientProtocol to fetch parts of block locations. 4. HADOOP-1336 CONFIG - Enable speculative execution by default. 5. HADOOP-1197 API - deprecated method for Configuration.getObject, because Configurations should only contain strings. 6. HADOOP-1343 API - deprecate Configuration.set(String,Object) so that only strings are put in Configrations. 7. HADOOP-1207 CLI - Fix FsShell 'rm' command to continue when a non-existent file is encountered. 8. HADOOP-1473 CLI/API - Job, TIP, and Task id formats have changed and are now unique across job tracker restarts. 9. HADOOP-1400 API - JobClient constructor now takes a JobConf object instead of a Configuration object. NEW FEATURES and BUG FIXES 1. HADOOP-1197. In Configuration, deprecate getObject() and add getRaw(), which skips variable expansion. (omalley via cutting) 2. HADOOP-1343. In Configuration, deprecate set(String,Object) and implement Iterable. (omalley via cutting) 3. HADOOP-1344. Add RunningJob#getJobName(). (Michael Bieniosek via cutting) 4. HADOOP-1342. In aggregators, permit one to limit the number of unique values per key. (Runping Qi via cutting) 5. HADOOP-1340. Set the replication factor of the MD5 file in the filecache to be the same as the replication factor of the original file. (Dhruba Borthakur via tomwhite.) 6. HADOOP-1355. Fix null pointer dereference in TaskLogAppender.append(LoggingEvent). (Arun C Murthy via tomwhite.) 7. HADOOP-1357. Fix CopyFiles to correctly avoid removing "/". (Arun C Murthy via cutting) 8. HADOOP-234. Add pipes facility, which permits writing MapReduce programs in C++. 9. HADOOP-1359. Fix a potential NullPointerException in HDFS. (Hairong Kuang via cutting) 10. HADOOP-1364. Fix inconsistent synchronization in SequenceFile. (omalley via cutting) 11. HADOOP-1379. Add findbugs target to build.xml. (Nigel Daley via cutting) 12. HADOOP-1364. Fix various inconsistent synchronization issues. (Devaraj Das via cutting) 13. HADOOP-1393. Remove a potential unexpected negative number from uses of random number generator. (omalley via cutting) 14. HADOOP-1387. A number of "performance" code-cleanups suggested by findbugs. (Arun C Murthy via cutting) 15. HADOOP-1401. Add contrib/hbase javadoc to tree. (stack via cutting) 16. HADOOP-894. Change HDFS so that the client only retrieves a limited number of block locations per request from the namenode. (Konstantin Shvachko via cutting) 17. HADOOP-1406. Plug a leak in MapReduce's use of metrics. (David Bowen via cutting) 18. HADOOP-1394. Implement "performance" code-cleanups in HDFS suggested by findbugs. (Raghu Angadi via cutting) 19. HADOOP-1413. Add example program that uses Knuth's dancing links algorithm to solve pentomino problems. (omalley via cutting) 20. HADOOP-1226. Change HDFS so that paths it returns are always fully qualified. (Dhruba Borthakur via cutting) 21. HADOOP-800. Improvements to HDFS web-based file browser. (Enis Soztutar via cutting) 22. HADOOP-1408. Fix a compiler warning by adding a class to replace a generic. (omalley via cutting) 23. HADOOP-1376. Modify RandomWriter example so that it can generate data for the Terasort benchmark. (Devaraj Das via cutting) 24. HADOOP-1429. Stop logging exceptions during normal IPC server shutdown. (stack via cutting) 25. HADOOP-1461. Fix the synchronization of the task tracker to avoid lockups in job cleanup. (Arun C Murthy via omalley) 26. HADOOP-1446. Update the TaskTracker metrics while the task is running. (Devaraj via omalley) 27. HADOOP-1414. Fix a number of issues identified by FindBugs as "Bad Practice". (Dhruba Borthakur via cutting) 28. HADOOP-1392. Fix "correctness" bugs identified by FindBugs in fs and dfs packages. (Raghu Angadi via cutting) 29. HADOOP-1412. Fix "dodgy" bugs identified by FindBugs in fs and io packages. (Hairong Kuang via cutting) 30. HADOOP-1261. Remove redundant events from HDFS namenode's edit log when a datanode restarts. (Raghu Angadi via cutting) 31. HADOOP-1336. Re-enable speculative execution by default. (omalley via cutting) 32. HADOOP-1311. Fix a bug in BytesWritable#set() where start offset was ignored. (Dhruba Borthakur via cutting) 33. HADOOP-1450. Move checksumming closer to user code, so that checksums are created before data is stored in large buffers and verified after data is read from large buffers, to better catch memory errors. (cutting) 34. HADOOP-1447. Add support in contrib/data_join for text inputs. (Senthil Subramanian via cutting) 35. HADOOP-1456. Fix TestDecommission assertion failure by setting the namenode to ignore the load on datanodes while allocating replicas. (Dhruba Borthakur via tomwhite) 36. HADOOP-1396. Fix FileNotFoundException on DFS block. (Dhruba Borthakur via tomwhite) 37. HADOOP-1467. Remove redundant counters from WordCount example. (Owen O'Malley via tomwhite) 38. HADOOP-1139. Log HDFS block transitions at INFO level, to better enable diagnosis of problems. (Dhruba Borthakur via cutting) 39. HADOOP-1269. Finer grained locking in HDFS namenode. (Dhruba Borthakur via cutting) 40. HADOOP-1438. Improve HDFS documentation, correcting typos and making images appear in PDF. Also update copyright date for all docs. (Luke Nezda via cutting) 41. HADOOP-1457. Add counters for monitoring task assignments. (Arun C Murthy via tomwhite) 42. HADOOP-1472. Fix so that timed-out tasks are counted as failures rather than as killed. (Arun C Murthy via cutting) 43. HADOOP-1234. Fix a race condition in file cache that caused tasktracker to not be able to find cached files. (Arun C Murthy via cutting) 44. HADOOP-1482. Fix secondary namenode to roll info port. (Dhruba Borthakur via cutting) 45. HADOOP-1300. Improve removal of excess block replicas to be rack-aware. Attempts are now made to keep replicas on more racks. (Hairong Kuang via cutting) 46. HADOOP-1417. Disable a few FindBugs checks that generate a lot of spurious warnings. (Nigel Daley via cutting) 47. HADOOP-1320. Rewrite RandomWriter example to bypass reduce. (Arun C Murthy via cutting) 48. HADOOP-1449. Add some examples to contrib/data_join. (Senthil Subramanian via cutting) 49. HADOOP-1459. Fix so that, in HDFS, getFileCacheHints() returns hostnames instead of IP addresses. (Dhruba Borthakur via cutting) 50. HADOOP-1493. Permit specification of "java.library.path" system property in "mapred.child.java.opts" configuration property. (Enis Soztutar via cutting) 51. HADOOP-1372. Use LocalDirAllocator for HDFS temporary block files, so that disk space, writability, etc. is considered. (Dhruba Borthakur via cutting) 52. HADOOP-1193. Pool allocation of compression codecs. This eliminates a memory leak that could cause OutOfMemoryException, and also substantially improves performance. (Arun C Murthy via cutting) 53. HADOOP-1492. Fix a NullPointerException handling version mismatch during datanode registration. (Konstantin Shvachko via cutting) 54. HADOOP-1442. Fix handling of zero-length input splits. (Senthil Subramanian via cutting) 55. HADOOP-1444. Fix HDFS block id generation to check pending blocks for duplicates. (Dhruba Borthakur via cutting) 56. HADOOP-1207. Fix FsShell's 'rm' command to not stop when one of the named files does not exist. (Tsz Wo Sze via cutting) 57. HADOOP-1475. Clear tasktracker's file cache before it re-initializes, to avoid confusion. (omalley via cutting) 58. HADOOP-1505. Remove spurious stacktrace in ZlibFactory introduced in HADOOP-1093. (Michael Stack via tomwhite) 59. HADOOP-1484. Permit one to kill jobs from the web ui. Note that this is disabled by default. One must set "webinterface.private.actions" to enable this. (Enis Soztutar via cutting) 60. HADOOP-1003. Remove flushing of namenode edit log from primary namenode lock, increasing namenode throughput. (Dhruba Borthakur via cutting) 61. HADOOP-1023. Add links to searchable mail archives. (tomwhite via cutting) 62. HADOOP-1504. Fix terminate-hadoop-cluster script in contrib/ec2 to only terminate Hadoop instances, and not other instances started by the same user. (tomwhite via cutting) 63. HADOOP-1462. Improve task progress reporting. Progress reports are no longer blocking since i/o is performed in a separate thread. Reporting during sorting and more is also more consistent. (Vivek Ratan via cutting) 64. [ intentionally blank ] 65. HADOOP-1453. Remove some unneeded calls to FileSystem#exists() when opening files, reducing the namenode load somewhat. (Raghu Angadi via cutting) 66. HADOOP-1489. Fix text input truncation bug due to mark/reset. Add a unittest. (Bwolen Yang via cutting) 67. HADOOP-1455. Permit specification of arbitrary job options on pipes command line. (Devaraj Das via cutting) 68. HADOOP-1501. Better randomize sending of block reports to namenode, so reduce load spikes. (Dhruba Borthakur via cutting) 69. HADOOP-1147. Remove @author tags from Java source files. 70. HADOOP-1283. Convert most uses of UTF8 in the namenode to be String. (Konstantin Shvachko via cutting) 71. HADOOP-1511. Speedup hbase unit tests. (stack via cutting) 72. HADOOP-1517. Remove some synchronization in namenode to permit finer grained locking previously added. (Konstantin Shvachko via cutting) 73. HADOOP-1512. Fix failing TestTextInputFormat on Windows. (Senthil Subramanian via nigel) 74. HADOOP-1518. Add a session id to job metrics, for use by HOD. (David Bowen via cutting) 75. HADOOP-1292. Change 'bin/hadoop fs -get' to first copy files to a temporary name, then rename them to their final name, so that failures don't leave partial files. (Tsz Wo Sze via cutting) 76. HADOOP-1377. Add support for modification time to FileSystem and implement in HDFS and local implementations. Also, alter access to file properties to be through a new FileStatus interface. (Dhruba Borthakur via cutting) 77. HADOOP-1515. Add MultiFileInputFormat, which can pack multiple, typically small, input files into each split. (Enis Soztutar via cutting) 78. HADOOP-1514. Make reducers report progress while waiting for map outputs, so they're not killed. (Vivek Ratan via cutting) 79. HADOOP-1508. Add an Ant task for FsShell operations. Also add new FsShell commands "touchz", "test" and "stat". (Chris Douglas via cutting) 80. HADOOP-1028. Add log messages for server startup and shutdown. (Tsz Wo Sze via cutting) 81. HADOOP-1485. Add metrics for monitoring shuffle. (Devaraj Das via cutting) 82. HADOOP-1536. Remove file locks from libhdfs tests. (Dhruba Borthakur via nigel) 83. HADOOP-1520. Add appropriate synchronization to FSEditsLog. (Dhruba Borthakur via nigel) 84. HADOOP-1513. Fix a race condition in directory creation. (Devaraj via omalley) 85. HADOOP-1546. Remove spurious column from HDFS web UI. (Dhruba Borthakur via cutting) 86. HADOOP-1556. Make LocalJobRunner delete working files at end of job run. (Devaraj Das via tomwhite) 87. HADOOP-1571. Add contrib lib directories to root build.xml javadoc classpath. (Michael Stack via tomwhite) 88. HADOOP-1554. Log killed tasks to the job history and display them on the web/ui. (Devaraj Das via omalley) 89. HADOOP-1533. Add persistent error logging for distcp. The logs are stored into a specified hdfs directory. (Senthil Subramanian via omalley) 90. HADOOP-1286. Add support to HDFS for distributed upgrades, which permits coordinated upgrade of datanode data. (Konstantin Shvachko via cutting) 91. HADOOP-1580. Improve contrib/streaming so that subprocess exit status is displayed for errors. (John Heidemann via cutting) 92. HADOOP-1448. In HDFS, randomize lists of non-local block locations returned to client, so that load is better balanced. (Hairong Kuang via cutting) 93. HADOOP-1578. Fix datanode to send its storage id to namenode during registration. (Konstantin Shvachko via cutting) 94. HADOOP-1584. Fix a bug in GenericWritable which limited it to 128 types instead of 256. (Espen Amble Kolstad via cutting) 95. HADOOP-1473. Make job ids unique across jobtracker restarts. (omalley via cutting) 96. HADOOP-1582. Fix hdfslib to return 0 instead of -1 at end-of-file, per C conventions. (Christian Kunz via cutting) 97. HADOOP-911. Fix a multithreading bug in libhdfs. (Christian Kunz) 98. HADOOP-1486. Fix so that fatal exceptions in namenode cause it to exit. (Dhruba Borthakur via cutting) 99. HADOOP-1470. Factor checksum generation and validation out of ChecksumFileSystem so that it can be reused by FileSystem's with built-in checksumming. (Hairong Kuang via cutting) 100. HADOOP-1590. Use relative urls in jobtracker jsp pages, so that webapp can be used in non-root contexts. (Thomas Friol via cutting) 101. HADOOP-1596. Fix the parsing of taskids by streaming and improve the error reporting. (omalley) 102. HADOOP-1535. Fix the user-controlled grouping to the reduce function. (Vivek Ratan via omalley) 103. HADOOP-1585. Modify GenericWritable to declare the classes as subtypes of Writable (Espen Amble Kolstad via omalley) 104. HADOOP-1576. Fix errors in count of completed tasks when speculative execution is enabled. (Arun C Murthy via cutting) 105. HADOOP-1598. Fix license headers: adding missing; updating old. (Enis Soztutar via cutting) 106. HADOOP-1547. Provide examples for aggregate library. (Runping Qi via tomwhite) 107. HADOOP-1570. Permit jobs to enable and disable the use of hadoop's native library. (Arun C Murthy via cutting) 108. HADOOP-1433. Add job priority. (Johan Oskarsson via tomwhite) 109. HADOOP-1597. Add status reports and post-upgrade options to HDFS distributed upgrade. (Konstantin Shvachko via cutting) 110. HADOOP-1524. Permit user task logs to appear as they're created. (Michael Bieniosek via cutting) 111. HADOOP-1599. Fix distcp bug on Windows. (Senthil Subramanian via cutting) 112. HADOOP-1562. Add JVM metrics, including GC and logging stats. (David Bowen via cutting) 113. HADOOP-1613. Fix "DFS Health" page to display correct time of last contact. (Dhruba Borthakur via cutting) 114. HADOOP-1134. Add optimized checksum support to HDFS. Checksums are now stored with each block, rather than as parallel files. This reduces the namenode's memory requirements and increases data integrity. (Raghu Angadi via cutting) 115. HADOOP-1400. Make JobClient retry requests, so that clients can survive jobtracker problems. (omalley via cutting) 116. HADOOP-1564. Add unit tests for HDFS block-level checksums. (Dhruba Borthakur via cutting) 117. HADOOP-1620. Reduce the number of abstract FileSystem methods, simplifying implementations. (cutting) 118. HADOOP-1625. Fix a "could not move files" exception in datanode. (Raghu Angadi via cutting) 119. HADOOP-1624. Fix an infinite loop in datanode. (Raghu Angadi via cutting) 120. HADOOP-1084. Switch mapred file cache to use file modification time instead of checksum to detect file changes, as checksums are no longer easily accessed. (Arun C Murthy via cutting) 130. HADOOP-1623. Fix an infinite loop when copying directories. (Dhruba Borthakur via cutting) 131. HADOOP-1603. Fix a bug in namenode initialization where default replication is sometimes reset to one on restart. (Raghu Angadi via cutting) 132. HADOOP-1635. Remove hardcoded keypair name and fix launch-hadoop-cluster to support later versions of ec2-api-tools. (Stu Hood via tomwhite) 133. HADOOP-1638. Fix contrib EC2 scripts to support NAT addressing. (Stu Hood via tomwhite) 134. HADOOP-1632. Fix an IllegalArgumentException in fsck. (Hairong Kuang via cutting) 135. HADOOP-1619. Fix FSInputChecker to not attempt to read past EOF. (Hairong Kuang via cutting) 136. HADOOP-1640. Fix TestDecommission on Windows. (Dhruba Borthakur via cutting) 137. HADOOP-1587. Fix TestSymLink to get required system properties. (Devaraj Das via omalley) 138. HADOOP-1628. Add block CRC protocol unit tests. (Raghu Angadi via omalley) 139. HADOOP-1653. FSDirectory code-cleanups. FSDirectory.INode becomes a static class. (Christophe Taton via dhruba) 140. HADOOP-1066. Restructure documentation to make more user friendly. (Connie Kleinjans and Jeff Hammerbacher via cutting) 141. HADOOP-1551. libhdfs supports setting replication factor and retrieving modification time of files. (Sameer Paranjpye via dhruba) 141. HADOOP-1647. FileSystem.getFileStatus returns valid values for "/". (Dhruba Borthakur via dhruba) 142. HADOOP-1657. Fix NNBench to ensure that the block size is a multiple of bytes.per.checksum. (Raghu Angadi via dhruba) 143. HADOOP-1553. Replace user task output and log capture code to use shell redirection instead of copier threads in the TaskTracker. Capping the size of the output is now done via tail in memory and thus should not be large. The output of the tasklog servlet is not forced into UTF8 and is not buffered entirely in memory. (omalley) Configuration changes to hadoop-default.xml: remove mapred.userlog.num.splits remove mapred.userlog.purge.splits change default mapred.userlog.limit.kb to 0 (no limit) change default mapred.userlog.retain.hours to 24 Configuration changes to log4j.properties: remove log4j.appender.TLA.noKeepSplits remove log4j.appender.TLA.purgeLogSplits remove log4j.appender.TLA.logsRetainHours URL changes: http:///tasklog.jsp -> http://tasklog with parameters limited to start and end, which may be positive (from start) or negative (from end). Environment: require bash (v2 or later) and tail 144. HADOOP-1659. Fix a job id/job name mixup. (Arun C. Murthy via omalley) 145. HADOOP-1665. With HDFS Trash enabled and the same file was created and deleted more than once, the suceeding deletions creates Trash item names suffixed with a integer. (Dhruba Borthakur via dhruba) 146. HADOOP-1666. FsShell object can be used for multiple fs commands. (Dhruba Borthakur via dhruba) 147. HADOOP-1654. Remove performance regression introduced by Block CRC. (Raghu Angadi via dhruba) 148. HADOOP-1680. Improvements to Block CRC upgrade messages. (Raghu Angadi via dhruba) 149. HADOOP-71. Allow Text and SequenceFile Map/Reduce inputs from non-default filesystems. (omalley) 150. HADOOP-1568. Expose HDFS as xml/http filesystem to provide cross-version compatability. (Chris Douglas via omalley) 151. HADOOP-1668. Added an INCOMPATIBILITY section to CHANGES.txt. (nigel) 152. HADOOP-1629. Added a upgrade test for HADOOP-1134. (Raghu Angadi via nigel) 153. HADOOP-1698. Fix performance problems on map output sorting for jobs with large numbers of reduces. (Devaraj Das via omalley) 154. HADOOP-1716. Fix a Pipes wordcount example to remove the 'file:' schema from its output path. (omalley via cutting) 155. HADOOP-1714. Fix TestDFSUpgradeFromImage to work on Windows. (Raghu Angadi via nigel) 156. HADOOP-1663. Return a non-zero exit code if streaming fails. (Lohit Renu via omalley) 157. HADOOP-1712. Fix an unhandled exception on datanode during block CRC upgrade. (Raghu Angadi via cutting) 158. HADOOP-1717. Fix TestDFSUpgradeFromImage to work on Solaris. (nigel via cutting) 159. HADOOP-1437. Add Eclipse plugin in contrib. (Eugene Hung and Christophe Taton via cutting) Release 0.13.0 - 2007-06-08 1. HADOOP-1047. Fix TestReplication to succeed more reliably. (Hairong Kuang via cutting) 2. HADOOP-1063. Fix a race condition in MiniDFSCluster test code. (Hairong Kuang via cutting) 3. HADOOP-1101. In web ui, split shuffle statistics from reduce statistics, and add some task averages. (Devaraj Das via cutting) 4. HADOOP-1071. Improve handling of protocol version mismatch in JobTracker. (Tahir Hashmi via cutting) 5. HADOOP-1116. Increase heap size used for contrib unit tests. (Philippe Gassmann via cutting) 6. HADOOP-1120. Add contrib/data_join, tools to simplify joining data from multiple sources using MapReduce. (Runping Qi via cutting) 7. HADOOP-1064. Reduce log level of some DFSClient messages. (Dhruba Borthakur via cutting) 8. HADOOP-1137. Fix StatusHttpServer to work correctly when resources are in a jar file. (Benjamin Reed via cutting) 9. HADOOP-1094. Optimize generated Writable implementations for records to not allocate a new BinaryOutputArchive or BinaryInputArchive per call. (Milind Bhandarkar via cutting) 10. HADOOP-1068. Improve error message for clusters with 0 datanodes. (Dhruba Borthakur via tomwhite) 11. HADOOP-1122. Fix divide-by-zero exception in FSNamesystem chooseTarget method. (Dhruba Borthakur via tomwhite) 12. HADOOP-1131. Add a closeAll() static method to FileSystem. (Philippe Gassmann via tomwhite) 13. HADOOP-1085. Improve port selection in HDFS and MapReduce test code. Ports are now selected by the OS during testing rather than by probing for free ports, improving test reliability. (Arun C Murthy via cutting) 14. HADOOP-1153. Fix HDFS daemons to correctly stop their threads. (Konstantin Shvachko via cutting) 15. HADOOP-1146. Add a counter for reduce input keys and rename the "reduce input records" counter to be "reduce input groups". (David Bowen via cutting) 16. HADOOP-1165. In records, replace idential generated toString methods with a method on the base class. (Milind Bhandarkar via cutting) 17. HADOOP-1164. Fix TestReplicationPolicy to specify port zero, so that a free port is automatically selected. (omalley via cutting) 18. HADOOP-1166. Add a NullOutputFormat and use it in the RandomWriter example. (omalley via cutting) 19. HADOOP-1169. Fix a cut/paste error in CopyFiles utility so that S3-based source files are correctly copied. (Michael Stack via cutting) 20. HADOOP-1167. Remove extra synchronization in InMemoryFileSystem. (omalley via cutting) 21. HADOOP-1110. Fix an off-by-one error counting map inputs. (David Bowen via cutting) 22. HADOOP-1178. Fix a NullPointerException during namenode startup. (Dhruba Borthakur via cutting) 23. HADOOP-1011. Fix a ConcurrentModificationException when viewing job history. (Tahir Hashmi via cutting) 24. HADOOP-672. Improve help for fs shell commands. (Dhruba Borthakur via cutting) 25. HADOOP-1170. Improve datanode performance by removing device checks from common operations. (Igor Bolotin via cutting) 26. HADOOP-1090. Fix SortValidator's detection of whether the input file belongs to the sort-input or sort-output directory. (Arun C Murthy via tomwhite) 27. HADOOP-1081. Fix bin/hadoop on Darwin. (Michael Bieniosek via cutting) 28. HADOOP-1045. Add contrib/hbase, a BigTable-like online database. (Jim Kellerman via cutting) 29. HADOOP-1156. Fix a NullPointerException in MiniDFSCluster. (Hairong Kuang via cutting) 30. HADOOP-702. Add tools to help automate HDFS upgrades. (Konstantin Shvachko via cutting) 31. HADOOP-1163. Fix ganglia metrics to aggregate metrics from different hosts properly. (Michael Bieniosek via tomwhite) 32. HADOOP-1194. Make compression style record level for map output compression. (Arun C Murthy via tomwhite) 33. HADOOP-1187. Improve DFS Scalability: avoid scanning entire list of datanodes in getAdditionalBlocks. (Dhruba Borthakur via tomwhite) 34. HADOOP-1133. Add tool to analyze and debug namenode on a production cluster. (Dhruba Borthakur via tomwhite) 35. HADOOP-1151. Remove spurious printing to stderr in streaming PipeMapRed. (Koji Noguchi via tomwhite) 36. HADOOP-988. Change namenode to use a single map of blocks to metadata. (Raghu Angadi via tomwhite) 37. HADOOP-1203. Change UpgradeUtilities used by DFS tests to use MiniDFSCluster to start and stop NameNode/DataNodes. (Nigel Daley via tomwhite) 38. HADOOP-1217. Add test.timeout property to build.xml, so that long-running unit tests may be automatically terminated. (Nigel Daley via cutting) 39. HADOOP-1149. Improve DFS Scalability: make processOverReplicatedBlock() a no-op if blocks are not over-replicated. (Raghu Angadi via tomwhite) 40. HADOOP-1149. Improve DFS Scalability: optimize getDistance(), contains(), and isOnSameRack() in NetworkTopology. (Hairong Kuang via tomwhite) 41. HADOOP-1218. Make synchronization on TaskTracker's RunningJob object consistent. (Devaraj Das via tomwhite) 42. HADOOP-1219. Ignore progress report once a task has reported as 'done'. (Devaraj Das via tomwhite) 43. HADOOP-1114. Permit user to specify additional CLASSPATH elements with a HADOOP_CLASSPATH environment variable. (cutting) 44. HADOOP-1198. Remove ipc.client.timeout parameter override from unit test configuration. Using the default is more robust and has almost the same run time. (Arun C Murthy via tomwhite) 45. HADOOP-1211. Remove deprecated constructor and unused static members in DataNode class. (Konstantin Shvachko via tomwhite) 46. HADOOP-1136. Fix ArrayIndexOutOfBoundsException in FSNamesystem$UnderReplicatedBlocks add() method. (Hairong Kuang via tomwhite) 47. HADOOP-978. Add the client name and the address of the node that previously started to create the file to the description of AlreadyBeingCreatedException. (Konstantin Shvachko via tomwhite) 48. HADOOP-1001. Check the type of keys and values generated by the mapper against the types specified in JobConf. (Tahir Hashmi via tomwhite) 49. HADOOP-971. Improve DFS Scalability: Improve name node performance by adding a hostname to datanodes map. (Hairong Kuang via tomwhite) 50. HADOOP-1189. Fix 'No space left on device' exceptions on datanodes. (Raghu Angadi via tomwhite) 51. HADOOP-819. Change LineRecordWriter to not insert a tab between key and value when either is null, and to print nothing when both are null. (Runping Qi via cutting) 52. HADOOP-1204. Rename InputFormatBase to be FileInputFormat, and deprecate InputFormatBase. Also make LineRecordReader easier to extend. (Runping Qi via cutting) 53. HADOOP-1213. Improve logging of errors by IPC server, to consistently include the service name and the call. (cutting) 54. HADOOP-1238. Fix metrics reporting by TaskTracker to correctly track maps_running and reduces_running. (Michael Bieniosek via cutting) 55. HADOOP-1093. Fix a race condition in HDFS where blocks were sometimes erased before they were reported written. (Dhruba Borthakur via cutting) 56. HADOOP-1239. Add a package name to some testjar test classes. (Jim Kellerman via cutting) 57. HADOOP-1241. Fix NullPointerException in processReport when namenode is restarted. (Dhruba Borthakur via tomwhite) 58. HADOOP-1244. Fix stop-dfs.sh to no longer incorrectly specify slaves file for stopping datanode. (Michael Bieniosek via tomwhite) 59. HADOOP-1253. Fix ConcurrentModificationException and NullPointerException in JobControl. (Johan Oskarson via tomwhite) 60. HADOOP-1256. Fix NameNode so that multiple DataNodeDescriptors can no longer be created on startup. (Hairong Kuang via cutting) 61. HADOOP-1214. Replace streaming classes with new counterparts from Hadoop core. (Runping Qi via tomwhite) 62. HADOOP-1250. Move a chmod utility from streaming to FileUtil. (omalley via cutting) 63. HADOOP-1258. Fix TestCheckpoint test case to wait for MiniDFSCluster to be active. (Nigel Daley via tomwhite) 64. HADOOP-1148. Re-indent all Java source code to consistently use two spaces per indent level. (cutting) 65. HADOOP-1251. Add a method to Reporter to get the map InputSplit. (omalley via cutting) 66. HADOOP-1224. Fix "Browse the filesystem" link to no longer point to dead datanodes. (Enis Soztutar via tomwhite) 67. HADOOP-1154. Fail a streaming task if the threads reading from or writing to the streaming process fail. (Koji Noguchi via tomwhite) 68. HADOOP-968. Move shuffle and sort to run in reduce's child JVM, rather than in TaskTracker. (Devaraj Das via cutting) 69. HADOOP-1111. Add support for client notification of job completion. If the job configuration has a job.end.notification.url property it will make a HTTP GET request to the specified URL. The number of retries and the interval between retries is also configurable. (Alejandro Abdelnur via tomwhite) 70. HADOOP-1275. Fix misspelled job notification property in hadoop-default.xml. (Alejandro Abdelnur via tomwhite) 71. HADOOP-1152. Fix race condition in MapOutputCopier.copyOutput file rename causing possible reduce task hang. (Tahir Hashmi via tomwhite) 72. HADOOP-1050. Distinguish between failed and killed tasks so as to not count a lost tasktracker against the job. (Arun C Murthy via tomwhite) 73. HADOOP-1271. Fix StreamBaseRecordReader to be able to log record data that's not UTF-8. (Arun C Murthy via tomwhite) 74. HADOOP-1190. Fix unchecked warnings in main Hadoop code. (tomwhite) 75. HADOOP-1127. Fix AlreadyBeingCreatedException in namenode for jobs run with speculative execution. (Arun C Murthy via tomwhite) 76. HADOOP-1282. Omnibus HBase patch. Improved tests & configuration. (Jim Kellerman via cutting) 77. HADOOP-1262. Make dfs client try to read from a different replica of the checksum file when a checksum error is detected. (Hairong Kuang via tomwhite) 78. HADOOP-1279. Fix JobTracker to maintain list of recently completed jobs by order of completion, not submission. (Arun C Murthy via cutting) 79. HADOOP-1284. In contrib/streaming, permit flexible specification of field delimiter and fields for partitioning and sorting. (Runping Qi via cutting) 80. HADOOP-1176. Fix a bug where reduce would hang when a map had more than 2GB of output for it. (Arun C Murthy via cutting) 81. HADOOP-1293. Fix contrib/streaming to print more than the first twenty lines of standard error. (Koji Noguchi via cutting) 82. HADOOP-1297. Fix datanode so that requests to remove blocks that do not exist no longer causes block reports to be re-sent every second. (Dhruba Borthakur via cutting) 83. HADOOP-1216. Change MapReduce so that, when numReduceTasks is zero, map outputs are written directly as final output, skipping shuffle, sort and reduce. Use this to implement reduce=NONE option in contrib/streaming. (Runping Qi via cutting) 84. HADOOP-1294. Fix unchecked warnings in main Hadoop code under Java 6. (tomwhite) 85. HADOOP-1299. Fix so that RPC will restart after RPC.stopClient() has been called. (Michael Stack via cutting) 86. HADOOP-1278. Improve blacklisting of TaskTrackers by JobTracker, to reduce false positives. (Arun C Murthy via cutting) 87. HADOOP-1290. Move contrib/abacus into mapred/lib/aggregate. (Runping Qi via cutting) 88. HADOOP-1272. Extract inner classes from FSNamesystem into separate classes. (Dhruba Borthakur via tomwhite) 89. HADOOP-1247. Add support to contrib/streaming for aggregate package, formerly called Abacus. (Runping Qi via cutting) 90. HADOOP-1061. Fix bug in listing files in the S3 filesystem. NOTE: this change is not backwards compatible! You should use the MigrationTool supplied to migrate existing S3 filesystem data to the new format. Please backup your data first before upgrading (using 'hadoop distcp' for example). (tomwhite) 91. HADOOP-1304. Make configurable the maximum number of task attempts before a job fails. (Devaraj Das via cutting) 92. HADOOP-1308. Use generics to restrict types when classes are passed as parameters to JobConf methods. (Michael Bieniosek via cutting) 93. HADOOP-1312. Fix a ConcurrentModificationException in NameNode that killed the heartbeat monitoring thread. (Dhruba Borthakur via cutting) 94. HADOOP-1315. Clean up contrib/streaming, switching it to use core classes more and removing unused code. (Runping Qi via cutting) 95. HADOOP-485. Allow a different comparator for grouping keys in calls to reduce. (Tahir Hashmi via cutting) 96. HADOOP-1322. Fix TaskTracker blacklisting to work correctly in one- and two-node clusters. (Arun C Murthy via cutting) 97. HADOOP-1144. Permit one to specify a maximum percentage of tasks that can fail before a job is aborted. The default is zero. (Arun C Murthy via cutting) 98. HADOOP-1184. Fix HDFS decomissioning to complete when the only copy of a block is on a decommissioned node. (Dhruba Borthakur via cutting) 99. HADOOP-1263. Change DFSClient to retry certain namenode calls with a random, exponentially increasing backoff time, to avoid overloading the namenode on, e.g., job start. (Hairong Kuang via cutting) 100. HADOOP-1325. First complete, functioning version of HBase. (Jim Kellerman via cutting) 101. HADOOP-1276. Make tasktracker expiry interval configurable. (Arun C Murthy via cutting) 102. HADOOP-1326. Change JobClient#RunJob() to return the job. (omalley via cutting) 103. HADOOP-1270. Randomize the fetch of map outputs, speeding the shuffle. (Arun C Murthy via cutting) 104. HADOOP-1200. Restore disk checking lost in HADOOP-1170. (Hairong Kuang via cutting) 105. HADOOP-1252. Changed MapReduce's allocation of local files to use round-robin among available devices, rather than a hashcode. More care is also taken to not allocate files on full or offline drives. (Devaraj Das via cutting) 106. HADOOP-1324. Change so that an FSError kills only the task that generates it rather than the entire task tracker. (Arun C Murthy via cutting) 107. HADOOP-1310. Fix unchecked warnings in aggregate code. (tomwhite) 108. HADOOP-1255. Fix a bug where the namenode falls into an infinite loop trying to remove a dead node. (Hairong Kuang via cutting) 109. HADOOP-1160. Fix DistributedFileSystem.close() to close the underlying FileSystem, correctly aborting files being written. (Hairong Kuang via cutting) 110. HADOOP-1341. Fix intermittent failures in HBase unit tests caused by deadlock. (Jim Kellerman via cutting) 111. HADOOP-1350. Fix shuffle performance problem caused by forcing chunked encoding of map outputs. (Devaraj Das via cutting) 112. HADOOP-1345. Fix HDFS to correctly retry another replica when a checksum error is encountered. (Hairong Kuang via cutting) 113. HADOOP-1205. Improve synchronization around HDFS block map. (Hairong Kuang via cutting) 114. HADOOP-1353. Fix a potential NullPointerException in namenode. (Dhruba Borthakur via cutting) 115. HADOOP-1354. Fix a potential NullPointerException in FsShell. (Hairong Kuang via cutting) 116. HADOOP-1358. Fix a potential bug when DFSClient calls skipBytes. (Hairong Kuang via cutting) 117. HADOOP-1356. Fix a bug in ValueHistogram. (Runping Qi via cutting) 118. HADOOP-1363. Fix locking bug in JobClient#waitForCompletion(). (omalley via cutting) 119. HADOOP-1368. Fix inconsistent synchronization in JobInProgress. (omalley via cutting) 120. HADOOP-1369. Fix inconsistent synchronization in TaskTracker. (omalley via cutting) 121. HADOOP-1361. Fix various calls to skipBytes() to check return value. (Hairong Kuang via cutting) 122. HADOOP-1388. Fix a potential NullPointerException in web ui. (Devaraj Das via cutting) 123. HADOOP-1385. Fix MD5Hash#hashCode() to generally hash to more than 256 values. (omalley via cutting) 124. HADOOP-1386. Fix Path to not permit the empty string as a path, as this has lead to accidental file deletion. Instead force applications to use "." to name the default directory. (Hairong Kuang via cutting) 125. HADOOP-1407. Fix integer division bug in JobInProgress which meant failed tasks didn't cause the job to fail. (Arun C Murthy via tomwhite) 126. HADOOP-1427. Fix a typo that caused GzipCodec to incorrectly use a very small input buffer. (Espen Amble Kolstad via cutting) 127. HADOOP-1435. Fix globbing code to no longer use the empty string to indicate the default directory, per HADOOP-1386. (Hairong Kuang via cutting) 128. HADOOP-1411. Make task retry framework handle AlreadyBeingCreatedException when wrapped as a RemoteException. (Hairong Kuang via tomwhite) 129. HADOOP-1242. Improve handling of DFS upgrades. (Konstantin Shvachko via cutting) 130. HADOOP-1332. Fix so that TaskTracker exits reliably during unit tests on Windows. (omalley via cutting) 131. HADOOP-1431. Fix so that sort progress reporting during map runs only while sorting, so that stuck maps are correctly terminated. (Devaraj Das and Arun C Murthy via cutting) 132. HADOOP-1452. Change TaskTracker.MapOutputServlet.doGet.totalRead to a long, permitting map outputs to exceed 2^31 bytes. (omalley via cutting) 133. HADOOP-1443. Fix a bug opening zero-length files in HDFS. (Konstantin Shvachko via cutting) Release 0.12.3 - 2007-04-06 1. HADOOP-1162. Fix bug in record CSV and XML serialization of binary values. (Milind Bhandarkar via cutting) 2. HADOOP-1123. Fix NullPointerException in LocalFileSystem when trying to recover from a checksum error. (Hairong Kuang & Nigel Daley via tomwhite) 3. HADOOP-1177. Fix bug where IOException in MapOutputLocation.getFile was not being logged. (Devaraj Das via tomwhite) 4. HADOOP-1175. Fix bugs in JSP for displaying a task's log messages. (Arun C Murthy via cutting) 5. HADOOP-1191. Fix map tasks to wait until sort progress thread has stopped before reporting the task done. (Devaraj Das via cutting) 6. HADOOP-1192. Fix an integer overflow bug in FSShell's 'dus' command and a performance problem in HDFS's implementation of it. (Hairong Kuang via cutting) 7. HADOOP-1105. Fix reducers to make "progress" while iterating through values. (Devaraj Das & Owen O'Malley via tomwhite) 8. HADOOP-1179. Make Task Tracker close index file as soon as the read is done when serving get-map-output requests. (Devaraj Das via tomwhite) Release 0.12.2 - 2007-23-17 1. HADOOP-1135. Fix bug in block report processing which may cause the namenode to delete blocks. (Dhruba Borthakur via tomwhite) 2. HADOOP-1145. Make XML serializer and deserializer classes public in record package. (Milind Bhandarkar via cutting) 3. HADOOP-1140. Fix a deadlock in metrics. (David Bowen via cutting) 4. HADOOP-1150. Fix streaming -reducer and -mapper to give them defaults. (Owen O'Malley via tomwhite) Release 0.12.1 - 2007-03-17 1. HADOOP-1035. Fix a StackOverflowError in FSDataSet. (Raghu Angadi via cutting) 2. HADOOP-1053. Fix VInt representation of negative values. Also remove references in generated record code to methods outside of the record package and improve some record documentation. (Milind Bhandarkar via cutting) 3. HADOOP-1067. Compile fails if Checkstyle jar is present in lib directory. Also remove dependency on a particular Checkstyle version number. (tomwhite) 4. HADOOP-1060. Fix an IndexOutOfBoundsException in the JobTracker that could cause jobs to hang. (Arun C Murthy via cutting) 5. HADOOP-1077. Fix a race condition fetching map outputs that could hang reduces. (Devaraj Das via cutting) 6. HADOOP-1083. Fix so that when a cluster restarts with a missing datanode, its blocks are replicated. (Hairong Kuang via cutting) 7. HADOOP-1082. Fix a NullPointerException in ChecksumFileSystem. (Hairong Kuang via cutting) 8. HADOOP-1088. Fix record serialization of negative values. (Milind Bhandarkar via cutting) 9. HADOOP-1080. Fix bug in bin/hadoop on Windows when native libraries are present. (ab via cutting) 10. HADOOP-1091. Fix a NullPointerException in MetricsRecord. (David Bowen via tomwhite) 11. HADOOP-1092. Fix a NullPointerException in HeartbeatMonitor thread. (Hairong Kuang via tomwhite) 12. HADOOP-1112. Fix a race condition in Hadoop metrics. (David Bowen via tomwhite) 13. HADOOP-1108. Checksummed file system should retry reading if a different replica is found when handling ChecksumException. (Hairong Kuang via tomwhite) 14. HADOOP-1070. Fix a problem with number of racks and datanodes temporarily doubling. (Konstantin Shvachko via tomwhite) 15. HADOOP-1099. Fix NullPointerException in JobInProgress. (Gautam Kowshik via tomwhite) 16. HADOOP-1115. Fix bug where FsShell copyToLocal doesn't copy directories. (Hairong Kuang via tomwhite) 17. HADOOP-1109. Fix NullPointerException in StreamInputFormat. (Koji Noguchi via tomwhite) 18. HADOOP-1117. Fix DFS scalability: when the namenode is restarted it consumes 80% CPU. (Dhruba Borthakur via tomwhite) 19. HADOOP-1089. Make the C++ version of write and read v-int agree with the Java versions. (Milind Bhandarkar via tomwhite) 20. HADOOP-1096. Rename InputArchive and OutputArchive and make them public. (Milind Bhandarkar via tomwhite) 21. HADOOP-1128. Fix missing progress information in map tasks. (Espen Amble Kolstad, Andrzej Bialecki, and Owen O'Malley via tomwhite) 22. HADOOP-1129. Fix DFSClient to not hide IOExceptions in flush method. (Hairong Kuang via tomwhite) 23. HADOOP-1126. Optimize CPU usage for under replicated blocks when cluster restarts. (Hairong Kuang via tomwhite) Release 0.12.0 - 2007-03-02 1. HADOOP-975. Separate stdout and stderr from tasks. (Arun C Murthy via cutting) 2. HADOOP-982. Add some setters and a toString() method to BytesWritable. (omalley via cutting) 3. HADOOP-858. Move contrib/smallJobsBenchmark to src/test, removing obsolete bits. (Nigel Daley via cutting) 4. HADOOP-992. Fix MiniMR unit tests to use MiniDFS when specified, rather than the local FS. (omalley via cutting) 5. HADOOP-954. Change use of metrics to use callback mechanism. Also rename utility class Metrics to MetricsUtil. (David Bowen & Nigel Daley via cutting) 6. HADOOP-893. Improve HDFS client's handling of dead datanodes. The set is no longer reset with each block, but rather is now maintained for the life of an open file. (Raghu Angadi via cutting) 7. HADOOP-882. Upgrade to jets3t version 0.5, used by the S3 FileSystem. This version supports retries. (Michael Stack via cutting) 8. HADOOP-977. Send task's stdout and stderr to JobClient's stdout and stderr respectively, with each line tagged by the task's name. (Arun C Murthy via cutting) 9. HADOOP-761. Change unit tests to not use /tmp. (Nigel Daley via cutting) 10. HADOOP-1007. Make names of metrics used in Hadoop unique. (Nigel Daley via cutting) 11. HADOOP-491. Change mapred.task.timeout to be per-job, and make a value of zero mean no timeout. Also change contrib/streaming to disable task timeouts. (Arun C Murthy via cutting) 12. HADOOP-1010. Add Reporter.NULL, a Reporter implementation that does nothing. (Runping Qi via cutting) 13. HADOOP-923. In HDFS NameNode, move replication computation to a separate thread, to improve heartbeat processing time. (Dhruba Borthakur via cutting) 14. HADOOP-476. Rewrite contrib/streaming command-line processing, improving parameter validation. (Sanjay Dahiya via cutting) 15. HADOOP-973. Improve error messages in Namenode. This should help to track down a problem that was appearing as a NullPointerException. (Dhruba Borthakur via cutting) 16. HADOOP-649. Fix so that jobs with no tasks are not lost. (Thomas Friol via cutting) 17. HADOOP-803. Reduce memory use by HDFS namenode, phase I. (Raghu Angadi via cutting) 18. HADOOP-1021. Fix MRCaching-based unit tests on Windows. (Nigel Daley via cutting) 19. HADOOP-889. Remove duplicate code from HDFS unit tests. (Milind Bhandarkar via cutting) 20. HADOOP-943. Improve HDFS's fsck command to display the filename for under-replicated blocks. (Dhruba Borthakur via cutting) 21. HADOOP-333. Add validator for sort benchmark output. (Arun C Murthy via cutting) 22. HADOOP-947. Improve performance of datanode decomissioning. (Dhruba Borthakur via cutting) 23. HADOOP-442. Permit one to specify hosts allowed to connect to namenode and jobtracker with include and exclude files. (Wendy Chien via cutting) 24. HADOOP-1017. Cache constructors, for improved performance. (Ron Bodkin via cutting) 25. HADOOP-867. Move split creation out of JobTracker to client. Splits are now saved in a separate file, read by task processes directly, so that user code is no longer required in the JobTracker. (omalley via cutting) 26. HADOOP-1006. Remove obsolete '-local' option from test code. (Gautam Kowshik via cutting) 27. HADOOP-952. Create a public (shared) Hadoop EC2 AMI. The EC2 scripts now support launch of public AMIs. (tomwhite) 28. HADOOP-1025. Remove some obsolete code in ipc.Server. (cutting) 29. HADOOP-997. Implement S3 retry mechanism for failed block transfers. This includes a generic retry mechanism for use elsewhere in Hadoop. (tomwhite) 30. HADOOP-990. Improve HDFS support for full datanode volumes. (Raghu Angadi via cutting) 31. HADOOP-564. Replace uses of "dfs://" URIs with the more standard "hdfs://". (Wendy Chien via cutting) 32. HADOOP-1030. In unit tests, unify setting of ipc.client.timeout. Also increase the value used from one to two seconds, in hopes of making tests complete more reliably. (cutting) 33. HADOOP-654. Stop assigning tasks to a tasktracker if it has failed more than a specified number in the job. (Arun C Murthy via cutting) 34. HADOOP-985. Change HDFS to identify nodes by IP address rather than by DNS hostname. (Raghu Angadi via cutting) 35. HADOOP-248. Optimize location of map outputs to not use random probes. (Devaraj Das via cutting) 36. HADOOP-1029. Fix streaming's input format to correctly seek to the start of splits. (Arun C Murthy via cutting) 37. HADOOP-492. Add per-job and per-task counters. These are incremented via the Reporter interface and available through the web ui and the JobClient API. The mapreduce framework maintains a few basic counters, and applications may add their own. Counters are also passed to the metrics system. (David Bowen via cutting) 38. HADOOP-1034. Fix datanode to better log exceptions. (Philippe Gassmann via cutting) 39. HADOOP-878. In contrib/streaming, fix reducer=NONE to work with multiple maps. (Arun C Murthy via cutting) 40. HADOOP-1039. In HDFS's TestCheckpoint, avoid restarting MiniDFSCluster so often, speeding this test. (Dhruba Borthakur via cutting) 41. HADOOP-1040. Update RandomWriter example to use counters and user-defined input and output formats. (omalley via cutting) 42. HADOOP-1027. Fix problems with in-memory merging during shuffle and re-enable this optimization. (Devaraj Das via cutting) 43. HADOOP-1036. Fix exception handling in TaskTracker to keep tasks from being lost. (Arun C Murthy via cutting) 44. HADOOP-1042. Improve the handling of failed map output fetches. (Devaraj Das via cutting) 45. HADOOP-928. Make checksums optional per FileSystem. (Hairong Kuang via cutting) 46. HADOOP-1044. Fix HDFS's TestDecommission to not spuriously fail. (Wendy Chien via cutting) 47. HADOOP-972. Optimize HDFS's rack-aware block placement algorithm. (Hairong Kuang via cutting) 48. HADOOP-1043. Optimize shuffle, increasing parallelism. (Devaraj Das via cutting) 49. HADOOP-940. Improve HDFS's replication scheduling. (Dhruba Borthakur via cutting) 50. HADOOP-1020. Fix a bug in Path resolution, and a with unit tests on Windows. (cutting) 51. HADOOP-941. Enhance record facility. (Milind Bhandarkar via cutting) 52. HADOOP-1000. Fix so that log messages in task subprocesses are not written to a task's standard error. (Arun C Murthy via cutting) 53. HADOOP-1037. Fix bin/slaves.sh, which currently only works with /bin/bash, to specify /bin/bash rather than /bin/sh. (cutting) 54. HADOOP-1046. Clean up tmp from partially received stale block files. (ab) 55. HADOOP-1041. Optimize mapred counter implementation. Also group counters by their declaring Enum. (David Bowen via cutting) 56. HADOOP-1032. Permit one to specify jars that will be cached across multiple jobs. (Gautam Kowshik via cutting) 57. HADOOP-1051. Add optional checkstyle task to build.xml. To use this developers must download the (LGPL'd) checkstyle jar themselves. (tomwhite via cutting) 58. HADOOP-1049. Fix a race condition in IPC client. (Devaraj Das via cutting) 60. HADOOP-1056. Check HDFS include/exclude node lists with both IP address and hostname. (Wendy Chien via cutting) 61. HADOOP-994. In HDFS, limit the number of blocks invalidated at once. Large lists were causing datenodes to timeout. (Dhruba Borthakur via cutting) 62. HADOOP-432. Add a trash feature, disabled by default. When enabled, the FSShell 'rm' command will move things to a trash directory in the filesystem. In HDFS, a thread periodically checkpoints the trash and removes old checkpoints. (cutting) Release 0.11.2 - 2007-02-16 1. HADOOP-1009. Fix an infinite loop in the HDFS namenode. (Dhruba Borthakur via cutting) 2. HADOOP-1014. Disable in-memory merging during shuffle, as this is causing data corruption. (Devaraj Das via cutting) Release 0.11.1 - 2007-02-09 1. HADOOP-976. Make SequenceFile.Metadata public. (Runping Qi via cutting) 2. HADOOP-917. Fix a NullPointerException in SequenceFile's merger with large map outputs. (omalley via cutting) 3. HADOOP-984. Fix a bug in shuffle error handling introduced by HADOOP-331. If a map output is unavailable, the job tracker is once more informed. (Arun C Murthy via cutting) 4. HADOOP-987. Fix a problem in HDFS where blocks were not removed from neededReplications after a replication target was selected. (Hairong Kuang via cutting) Release 0.11.0 - 2007-02-02 1. HADOOP-781. Remove methods deprecated in 0.10 that are no longer widely used. (cutting) 2. HADOOP-842. Change HDFS protocol so that the open() method is passed the client hostname, to permit the namenode to order block locations on the basis of network topology. (Hairong Kuang via cutting) 3. HADOOP-852. Add an ant task to compile record definitions, and use it to compile record unit tests. (Milind Bhandarkar via cutting) 4. HADOOP-757. Fix "Bad File Descriptor" exception in HDFS client when an output file is closed twice. (Raghu Angadi via cutting) 5. [ intentionally blank ] 6. HADOOP-890. Replace dashes in metric names with underscores, for better compatibility with some monitoring systems. (Nigel Daley via cutting) 7. HADOOP-801. Add to jobtracker a log of task completion events. (Sanjay Dahiya via cutting) 8. HADOOP-855. In HDFS, try to repair files with checksum errors. An exception is still thrown, but corrupt blocks are now removed when they have replicas. (Wendy Chien via cutting) 9. HADOOP-886. Reduce number of timer threads created by metrics API by pooling contexts. (Nigel Daley via cutting) 10. HADOOP-897. Add a "javac.args" property to build.xml that permits one to pass arbitrary options to javac. (Milind Bhandarkar via cutting) 11. HADOOP-899. Update libhdfs for changes in HADOOP-871. (Sameer Paranjpye via cutting) 12. HADOOP-905. Remove some dead code from JobClient. (cutting) 13. HADOOP-902. Fix a NullPointerException in HDFS client when closing output streams. (Raghu Angadi via cutting) 14. HADOOP-735. Switch generated record code to use BytesWritable to represent fields of type 'buffer'. (Milind Bhandarkar via cutting) 15. HADOOP-830. Improve mapreduce merge performance by buffering and merging multiple map outputs as they arrive at reduce nodes before they're written to disk. (Devaraj Das via cutting) 16. HADOOP-908. Add a new contrib package, Abacus, that simplifies counting and aggregation, built on MapReduce. (Runping Qi via cutting) 17. HADOOP-901. Add support for recursive renaming to the S3 filesystem. (Tom White via cutting) 18. HADOOP-912. Fix a bug in TaskTracker.isIdle() that was sporadically causing unit test failures. (Arun C Murthy via cutting) 19. HADOOP-909. Fix the 'du' command to correctly compute the size of FileSystem directory trees. (Hairong Kuang via cutting) 20. HADOOP-731. When a checksum error is encountered on a file stored in HDFS, try another replica of the data, if any. (Wendy Chien via cutting) 21. HADOOP-732. Add support to SequenceFile for arbitrary metadata, as a set of attribute value pairs. (Runping Qi via cutting) 22. HADOOP-929. Fix PhasedFileSystem to pass configuration to underlying FileSystem. (Sanjay Dahiya via cutting) 23. HADOOP-935. Fix contrib/abacus to not delete pre-existing output files, but rather to fail in this case. (Runping Qi via cutting) 24. HADOOP-936. More metric renamings, as in HADOOP-890. (Nigel Daley via cutting) 25. HADOOP-856. Fix HDFS's fsck command to not report that non-existent filesystems are healthy. (Milind Bhandarkar via cutting) 26. HADOOP-602. Remove the dependency on Lucene's PriorityQueue utility, by copying it into Hadoop. This facilitates using Hadoop with different versions of Lucene without worrying about CLASSPATH order. (Milind Bhandarkar via cutting) 27. [ intentionally blank ] 28. HADOOP-227. Add support for backup namenodes, which periodically get snapshots of the namenode state. (Dhruba Borthakur via cutting) 29. HADOOP-884. Add scripts in contrib/ec2 to facilitate running Hadoop on an Amazon's EC2 cluster. (Tom White via cutting) 30. HADOOP-937. Change the namenode to request re-registration of datanodes in more circumstances. (Hairong Kuang via cutting) 31. HADOOP-922. Optimize small forward seeks in HDFS. If data is has likely already in flight, skip ahead rather than re-opening the block. (Dhruba Borthakur via cutting) 32. HADOOP-961. Add a 'job -events' sub-command that prints job events, including task completions and failures. (omalley via cutting) 33. HADOOP-959. Fix namenode snapshot code added in HADOOP-227 to work on Windows. (Dhruba Borthakur via cutting) 34. HADOOP-934. Fix TaskTracker to catch metrics exceptions that were causing heartbeats to fail. (Arun Murthy via cutting) 35. HADOOP-881. Fix JobTracker web interface to display the correct number of task failures. (Sanjay Dahiya via cutting) 36. HADOOP-788. Change contrib/streaming to subclass TextInputFormat, permitting it to take advantage of native compression facilities. (Sanjay Dahiya via cutting) 37. HADOOP-962. In contrib/ec2: make scripts executable in tar file; add a README; make the environment file use a template. (Tom White via cutting) 38. HADOOP-549. Fix a NullPointerException in TaskReport's serialization. (omalley via cutting) 39. HADOOP-963. Fix remote exceptions to have the stack trace of the caller thread, not the IPC listener thread. (omalley via cutting) 40. HADOOP-967. Change RPC clients to start sending a version header. (omalley via cutting) 41. HADOOP-964. Fix a bug introduced by HADOOP-830 where jobs failed whose comparators and/or i/o types were in the job's jar. (Dennis Kubes via cutting) 42. HADOOP-969. Fix a deadlock in JobTracker. (omalley via cutting) 43. HADOOP-862. Add support for the S3 FileSystem to the CopyFiles tool. (Michael Stack via cutting) 44. HADOOP-965. Fix IsolationRunner so that job's jar can be found. (Dennis Kubes via cutting) 45. HADOOP-309. Fix two NullPointerExceptions in StatusHttpServer. (navychen via cutting) 46. HADOOP-692. Add rack awareness to HDFS's placement of blocks. (Hairong Kuang via cutting) Release 0.10.1 - 2007-01-10 1. HADOOP-857. Fix S3 FileSystem implementation to permit its use for MapReduce input and output. (Tom White via cutting) 2. HADOOP-863. Reduce logging verbosity introduced by HADOOP-813. (Devaraj Das via cutting) 3. HADOOP-815. Fix memory leaks in JobTracker. (Arun C Murthy via cutting) 4. HADOOP-600. Fix a race condition in JobTracker. (Arun C Murthy via cutting) 5. HADOOP-864. Fix 'bin/hadoop -jar' to operate correctly when hadoop.tmp.dir does not yet exist. (omalley via cutting) 6. HADOOP-866. Fix 'dfs -get' command to remove existing crc files, if any. (Milind Bhandarkar via cutting) 7. HADOOP-871. Fix a bug in bin/hadoop setting JAVA_LIBRARY_PATH. (Arun C Murthy via cutting) 8. HADOOP-868. Decrease the number of open files during map, respecting io.sort.fa ctor. (Devaraj Das via cutting) 9. HADOOP-865. Fix S3 FileSystem so that partially created files can be deleted. (Tom White via cutting) 10. HADOOP-873. Pass java.library.path correctly to child processes. (omalley via cutting) 11. HADOOP-851. Add support for the LZO codec. This is much faster than the default, zlib-based compression, but it is only available when the native library is built. (Arun C Murthy via cutting) 12. HADOOP-880. Fix S3 FileSystem to remove directories. (Tom White via cutting) 13. HADOOP-879. Fix InputFormatBase to handle output generated by MapFileOutputFormat. (cutting) 14. HADOOP-659. In HDFS, prioritize replication of blocks based on current replication level. Blocks which are severely under-replicated should be further replicated before blocks which are less under-replicated. (Hairong Kuang via cutting) 15. HADOOP-726. Deprecate FileSystem locking methods. They are not currently usable. Locking should eventually provided as an independent service. (Raghu Angadi via cutting) 16. HADOOP-758. Fix exception handling during reduce so that root exceptions are not masked by exceptions in cleanups. (Raghu Angadi via cutting) Release 0.10.0 - 2007-01-05 1. HADOOP-763. Change DFS namenode benchmark to not use MapReduce. (Nigel Daley via cutting) 2. HADOOP-777. Use fully-qualified hostnames for tasktrackers and datanodes. (Mahadev Konar via cutting) 3. HADOOP-621. Change 'dfs -cat' to exit sooner when output has been closed. (Dhruba Borthakur via cutting) 4. HADOOP-752. Rationalize some synchronization in DFS namenode. (Dhruba Borthakur via cutting) 5. HADOOP-629. Fix RPC services to better check the protocol name and version. (omalley via cutting) 6. HADOOP-774. Limit the number of invalid blocks returned with heartbeats by the namenode to datanodes. Transmitting and processing very large invalid block lists can tie up both the namenode and datanode for too long. (Dhruba Borthakur via cutting) 7. HADOOP-738. Change 'dfs -get' command to not create CRC files by default, adding a -crc option to force their creation. (Milind Bhandarkar via cutting) 8. HADOOP-676. Improved exceptions and error messages for common job input specification errors. (Sanjay Dahiya via cutting) 9. [Included in 0.9.2 release] 10. HADOOP-756. Add new dfsadmin option to wait for filesystem to be operational. (Dhruba Borthakur via cutting) 11. HADOOP-770. Fix jobtracker web interface to display, on restart, jobs that were running when it was last stopped. (Sanjay Dahiya via cutting) 12. HADOOP-331. Write all map outputs to a single file with an index, rather than to a separate file per reduce task. This should both speed the shuffle and make things more scalable. (Devaraj Das via cutting) 13. HADOOP-818. Fix contrib unit tests to not depend on core unit tests. (omalley via cutting) 14. HADOOP-786. Log common exception at debug level. (Sanjay Dahiya via cutting) 15. HADOOP-796. Provide more convenient access to failed task information in the web interface. (Sanjay Dahiya via cutting) 16. HADOOP-764. Reduce memory allocations in namenode some. (Dhruba Borthakur via cutting) 17. HADOOP-802. Update description of mapred.speculative.execution to mention reduces. (Nigel Daley via cutting) 18. HADOOP-806. Include link to datanodes on front page of namenode web interface. (Raghu Angadi via cutting) 19. HADOOP-618. Make JobSubmissionProtocol public. (Arun C Murthy via cutting) 20. HADOOP-782. Fully remove killed tasks. (Arun C Murthy via cutting) 21. HADOOP-792. Fix 'dfs -mv' to return correct status. (Dhruba Borthakur via cutting) 22. HADOOP-673. Give each task its own working directory again. (Mahadev Konar via cutting) 23. HADOOP-571. Extend the syntax of Path to be a URI; to be optionally qualified with a scheme and authority. The scheme determines the FileSystem implementation, while the authority determines the FileSystem instance. New FileSystem implementations may be provided by defining an fs..impl property, naming the FileSystem implementation class. This permits easy integration of new FileSystem implementations. (cutting) 24. HADOOP-720. Add an HDFS white paper to website. (Dhruba Borthakur via cutting) 25. HADOOP-794. Fix a divide-by-zero exception when a job specifies zero map tasks. (omalley via cutting) 26. HADOOP-454. Add a 'dfs -dus' command that provides summary disk usage. (Hairong Kuang via cutting) 27. HADOOP-574. Add an Amazon S3 implementation of FileSystem. To use this, one need only specify paths of the form s3://id:secret@bucket/. Alternately, the AWS access key id and secret can be specified in your config, with the properties fs.s3.awsAccessKeyId and fs.s3.awsSecretAccessKey. (Tom White via cutting) 28. HADOOP-824. Rename DFSShell to be FsShell, since it applies generically to all FileSystem implementations. (cutting) 29. HADOOP-813. Fix map output sorting to report progress, so that sorts which take longer than the task timeout do not fail. (Devaraj Das via cutting) 30. HADOOP-825. Fix HDFS daemons when configured with new URI syntax. (omalley via cutting) 31. HADOOP-596. Fix a bug in phase reporting during reduce. (Sanjay Dahiya via cutting) 32. HADOOP-811. Add a utility, MultithreadedMapRunner. (Alejandro Abdelnur via cutting) 33. HADOOP-829. Within HDFS, clearly separate three different representations for datanodes: one for RPCs, one for namenode-internal use, and one for namespace persistence. (Dhruba Borthakur via cutting) 34. HADOOP-823. Fix problem starting datanode when not all configured data directories exist. (Bryan Pendleton via cutting) 35. HADOOP-451. Add a Split interface. CAUTION: This incompatibly changes the InputFormat and RecordReader interfaces. Not only is FileSplit replaced with Split, but a FileSystem parameter is no longer passed in several methods, input validation has changed, etc. (omalley via cutting) 36. HADOOP-814. Optimize locking in namenode. (Dhruba Borthakur via cutting) 37. HADOOP-738. Change 'fs -put' and 'fs -get' commands to accept standard input and output, respectively. Standard i/o is specified by a file named '-'. (Wendy Chien via cutting) 38. HADOOP-835. Fix a NullPointerException reading record-compressed SequenceFiles. (Hairong Kuang via cutting) 39. HADOOP-836. Fix a MapReduce bug on Windows, where the wrong FileSystem was used. Also add a static FileSystem.getLocal() method and better Path checking in HDFS, to help avoid such issues in the future. (omalley via cutting) 40. HADOOP-837. Improve RunJar utility to unpack jar file hadoop.tmp.dir, rather than the system temporary directory. (Hairong Kuang via cutting) 41. HADOOP-841. Fix native library to build 32-bit version even when on a 64-bit host, if a 32-bit JVM is used. (Arun C Murthy via cutting) 42. HADOOP-838. Fix tasktracker to pass java.library.path to sub-processes, so that libhadoop.a is found. (Arun C Murthy via cutting) 43. HADOOP-844. Send metrics messages on a fixed-delay schedule instead of a fixed-rate schedule. (David Bowen via cutting) 44. HADOOP-849. Fix OutOfMemory exceptions in TaskTracker due to a file handle leak in SequenceFile. (Devaraj Das via cutting) 45. HADOOP-745. Fix a synchronization bug in the HDFS namenode. (Dhruba Borthakur via cutting) 46. HADOOP-850. Add Writable implementations for variable-length integers. (ab via cutting) 47. HADOOP-525. Add raw comparators to record types. This greatly improves record sort performance. (Milind Bhandarkar via cutting) 48. HADOOP-628. Fix a problem with 'fs -cat' command, where some characters were replaced with question marks. (Wendy Chien via cutting) 49. HADOOP-804. Reduce verbosity of MapReduce logging. (Sanjay Dahiya via cutting) 50. HADOOP-853. Rename 'site' to 'docs', in preparation for inclusion in releases. (cutting) 51. HADOOP-371. Include contrib jars and site documentation in distributions. Also add contrib and example documentation to distributed javadoc, in separate sections. (Nigel Daley via cutting) 52. HADOOP-846. Report progress during entire map, as sorting of intermediate outputs may happen at any time, potentially causing task timeouts. (Devaraj Das via cutting) 53. HADOOP-840. In task tracker, queue task cleanups and perform them in a separate thread. (omalley & Mahadev Konar via cutting) 54. HADOOP-681. Add to HDFS the ability to decommission nodes. This causes their blocks to be re-replicated on other nodes, so that they may be removed from a cluster. (Dhruba Borthakur via cutting) 55. HADOOP-470. In HDFS web ui, list the datanodes containing each copy of a block. (Hairong Kuang via cutting) 56. HADOOP-700. Change bin/hadoop to only include core jar file on classpath, not example, test, etc. Also rename core jar to hadoop-${version}-core.jar so that it can be more easily identified. (Nigel Daley via cutting) 57. HADOOP-619. Extend InputFormatBase to accept individual files and glob patterns as MapReduce inputs, not just directories. Also change contrib/streaming to use this. (Sanjay Dahia via cutting) Release 0.9.2 - 2006-12-15 1. HADOOP-639. Restructure InterTrackerProtocol to make task accounting more reliable. (Arun C Murthy via cutting) 2. HADOOP-827. Turn off speculative execution by default, since it's currently broken. (omalley via cutting) 3. HADOOP-791. Fix a deadlock in the task tracker. (Mahadev Konar via cutting) Release 0.9.1 - 2006-12-06 1. HADOOP-780. Use ReflectionUtils to instantiate key and value objects. (ab) 2. HADOOP-779. Fix contrib/streaming to work correctly with gzipped input files. (Hairong Kuang via cutting) Release 0.9.0 - 2006-12-01 1. HADOOP-655. Remove most deprecated code. A few deprecated things remain, notably UTF8 and some methods that are still required. Also cleaned up constructors for SequenceFile, MapFile, SetFile, and ArrayFile a bit. (cutting) 2. HADOOP-565. Upgrade to Jetty version 6. (Sanjay Dahiya via cutting) 3. HADOOP-682. Fix DFS format command to work correctly when configured with a non-existent directory. (Sanjay Dahiya via cutting) 4. HADOOP-645. Fix a bug in contrib/streaming when -reducer is NONE. (Dhruba Borthakur via cutting) 5. HADOOP-687. Fix a classpath bug in bin/hadoop that blocked the servers from starting. (Sameer Paranjpye via omalley) 6. HADOOP-683. Remove a script dependency on bash, so it works with dash, the new default for /bin/sh on Ubuntu. (James Todd via cutting) 7. HADOOP-382. Extend unit tests to run multiple datanodes. (Milind Bhandarkar via cutting) 8. HADOOP-604. Fix some synchronization issues and a NullPointerException in DFS datanode. (Raghu Angadi via cutting) 9. HADOOP-459. Fix memory leaks and a host of other issues with libhdfs. (Sameer Paranjpye via cutting) 10. HADOOP-694. Fix a NullPointerException in jobtracker. (Mahadev Konar via cutting) 11. HADOOP-637. Fix a memory leak in the IPC server. Direct buffers are not collected like normal buffers, and provided little advantage. (Raghu Angadi via cutting) 12. HADOOP-696. Fix TestTextInputFormat unit test to not rely on the order of directory listings. (Sameer Paranjpye via cutting) 13. HADOOP-611. Add support for iterator-based merging to SequenceFile. (Devaraj Das via cutting) 14. HADOOP-688. Move DFS administrative commands to a separate command named 'dfsadmin'. (Dhruba Borthakur via cutting) 15. HADOOP-708. Fix test-libhdfs to return the correct status, so that failures will break the build. (Nigel Daley via cutting) 16. HADOOP-646. Fix namenode to handle edits files larger than 2GB. (Milind Bhandarkar via cutting) 17. HADOOP-705. Fix a bug in the JobTracker when failed jobs were not completely cleaned up. (Mahadev Konar via cutting) 18. HADOOP-613. Perform final merge while reducing. This removes one sort pass over the data and should consequently significantly decrease overall processing time. (Devaraj Das via cutting) 19. HADOOP-661. Make each job's configuration visible through the web ui. (Arun C Murthy via cutting) 20. HADOOP-489. In MapReduce, separate user logs from system logs. Each task's log output is now available through the web ui. (Arun C Murthy via cutting) 21. HADOOP-712. Fix record io's xml serialization to correctly handle control-characters. (Milind Bhandarkar via cutting) 22. HADOOP-668. Improvements to the web-based DFS browser. (Hairong Kuang via cutting) 23. HADOOP-715. Fix build.xml so that test logs are written in build directory, rather than in CWD. (Arun C Murthy via cutting) 24. HADOOP-538. Add support for building an optional native library, libhadoop.so, that improves the performance of zlib-based compression. To build this, specify -Dcompile.native to Ant. (Arun C Murthy via cutting) 25. HADOOP-610. Fix an problem when the DFS block size is configured to be smaller than the buffer size, typically only when debugging. (Milind Bhandarkar via cutting) 26. HADOOP-695. Fix a NullPointerException in contrib/streaming. (Hairong Kuang via cutting) 27. HADOOP-652. In DFS, when a file is deleted, the block count is now decremented. (Vladimir Krokhmalyov via cutting) 28. HADOOP-725. In DFS, optimize block placement algorithm, previously a performance bottleneck. (Milind Bhandarkar via cutting) 29. HADOOP-723. In MapReduce, fix a race condition during the shuffle, which resulted in FileNotFoundExceptions. (omalley via cutting) 30. HADOOP-447. In DFS, fix getBlockSize(Path) to work with relative paths. (Raghu Angadi via cutting) 31. HADOOP-733. Make exit codes in DFShell consistent and add a unit test. (Dhruba Borthakur via cutting) 32. HADOOP-709. Fix contrib/streaming to work with commands that contain control characters. (Dhruba Borthakur via cutting) 33. HADOOP-677. In IPC, permit a version header to be transmitted when connections are established. This will permit us to change the format of IPC requests back-compatibly in subsequent releases. (omalley via cutting) 34. HADOOP-699. Fix DFS web interface so that filesystem browsing works correctly, using the right port number. Also add support for sorting datanode list by various columns. (Raghu Angadi via cutting) 35. HADOOP-76. Implement speculative reduce. Now when a job is configured for speculative execution, both maps and reduces will execute speculatively. Reduce outputs are written to temporary location and moved to the final location when reduce is complete. (Sanjay Dahiya via cutting) 36. HADOOP-736. Roll back to Jetty 5.1.4, due to performance problems with Jetty 6.0.1. 37. HADOOP-739. Fix TestIPC to use different port number, making it more reliable. (Nigel Daley via cutting) 38. HADOOP-749. Fix a NullPointerException in jobfailures.jsp. (omalley via cutting) 39. HADOOP-747. Fix record serialization to work correctly when records are embedded in Maps. (Milind Bhandarkar via cutting) 40. HADOOP-698. Fix HDFS client not to retry the same datanode on read failures. (Milind Bhandarkar via cutting) 41. HADOOP-689. Add GenericWritable, to facilitate polymorphism in MapReduce, SequenceFile, etc. (Feng Jiang via cutting) 42. HADOOP-430. Stop datanode's HTTP server when registration with namenode fails. (Wendy Chien via cutting) 43. HADOOP-750. Fix a potential race condition during mapreduce shuffle. (omalley via cutting) 44. HADOOP-728. Fix contrib/streaming-related issues, including '-reducer NONE'. (Sanjay Dahiya via cutting) Release 0.8.0 - 2006-11-03 1. HADOOP-477. Extend contrib/streaming to scan the PATH environment variables when resolving executable program names. (Dhruba Borthakur via cutting) 2. HADOOP-583. In DFSClient, reduce the log level of re-connect attempts from 'info' to 'debug', so they are not normally shown. (Konstantin Shvachko via cutting) 3. HADOOP-498. Re-implement DFS integrity checker to run server-side, for much improved performance. (Milind Bhandarkar via cutting) 4. HADOOP-586. Use the jar name for otherwise un-named jobs. (Sanjay Dahiya via cutting) 5. HADOOP-514. Make DFS heartbeat interval configurable. (Milind Bhandarkar via cutting) 6. HADOOP-588. Fix logging and accounting of failed tasks. (Sanjay Dahiya via cutting) 7. HADOOP-462. Improve command line parsing in DFSShell, so that incorrect numbers of arguments result in informative errors rather than ArrayOutOfBoundsException. (Dhruba Borthakur via cutting) 8. HADOOP-561. Fix DFS so that one replica of each block is written locally, if possible. This was the intent, but there as a bug. (Dhruba Borthakur via cutting) 9. HADOOP-610. Fix TaskTracker to survive more exceptions, keeping tasks from becoming lost. (omalley via cutting) 10. HADOOP-625. Add a servlet to all http daemons that displays a stack dump, useful for debugging. (omalley via cutting) 11. HADOOP-554. Fix DFSShell to return -1 for errors. (Dhruba Borthakur via cutting) 12. HADOOP-626. Correct the documentation in the NNBench example code, and also remove a mistaken call there. (Nigel Daley via cutting) 13. HADOOP-634. Add missing license to many files. (Nigel Daley via cutting) 14. HADOOP-627. Fix some synchronization problems in MiniMRCluster that sometimes caused unit tests to fail. (Nigel Daley via cutting) 15. HADOOP-563. Improve the NameNode's lease policy so that leases are held for one hour without renewal (instead of one minute). However another attempt to create the same file will still succeed if the lease has not been renewed within a minute. This prevents communication or scheduling problems from causing a write to fail for up to an hour, barring some other process trying to create the same file. (Dhruba Borthakur via cutting) 16. HADOOP-635. In DFSShell, permit specification of multiple files as the source for file copy and move commands. (Dhruba Borthakur via cutting) 17. HADOOP-641. Change NameNode to request a fresh block report from a re-discovered DataNode, so that no-longer-needed replications are stopped promptly. (Konstantin Shvachko via cutting) 18. HADOOP-642. Change IPC client to specify an explicit connect timeout. (Konstantin Shvachko via cutting) 19. HADOOP-638. Fix an unsynchronized access to TaskTracker's internal state. (Nigel Daley via cutting) 20. HADOOP-624. Fix servlet path to stop a Jetty warning on startup. (omalley via cutting) 21. HADOOP-578. Failed tasks are no longer placed at the end of the task queue. This was originally done to work around other problems that have now been fixed. Re-executing failed tasks sooner causes buggy jobs to fail faster. (Sanjay Dahiya via cutting) 22. HADOOP-658. Update source file headers per Apache policy. (cutting) 23. HADOOP-636. Add MapFile & ArrayFile constructors which accept a Progressable, and pass it down to SequenceFile. This permits reduce tasks which use MapFile to still report progress while writing blocks to the filesystem. (cutting) 24. HADOOP-576. Enable contrib/streaming to use the file cache. Also extend the cache to permit symbolic links to cached items, rather than local file copies. (Mahadev Konar via cutting) 25. HADOOP-482. Fix unit tests to work when a cluster is running on the same machine, removing port conflicts. (Wendy Chien via cutting) 26. HADOOP-90. Permit dfs.name.dir to list multiple directories, where namenode data is to be replicated. (Milind Bhandarkar via cutting) 27. HADOOP-651. Fix DFSCk to correctly pass parameters to the servlet on the namenode. (Milind Bhandarkar via cutting) 28. HADOOP-553. Change main() routines of DataNode and NameNode to log exceptions rather than letting the JVM print them to standard error. Also, change the hadoop-daemon.sh script to rotate standard i/o log files. (Raghu Angadi via cutting) 29. HADOOP-399. Fix javadoc warnings. (Nigel Daley via cutting) 30. HADOOP-599. Fix web ui and command line to correctly report DFS filesystem size statistics. Also improve web layout. (Raghu Angadi via cutting) 31. HADOOP-660. Permit specification of junit test output format. (Nigel Daley via cutting) 32. HADOOP-663. Fix a few unit test issues. (Mahadev Konar via cutting) 33. HADOOP-664. Cause entire build to fail if libhdfs tests fail. (Nigel Daley via cutting) 34. HADOOP-633. Keep jobtracker from dying when job initialization throws exceptions. Also improve exception handling in a few other places and add more informative thread names. (omalley via cutting) 35. HADOOP-669. Fix a problem introduced by HADOOP-90 that can cause DFS to lose files. (Milind Bhandarkar via cutting) 36. HADOOP-373. Consistently check the value returned by FileSystem.mkdirs(). (Wendy Chien via cutting) 37. HADOOP-670. Code cleanups in some DFS internals: use generic types, replace Vector with ArrayList, etc. (Konstantin Shvachko via cutting) 38. HADOOP-647. Permit map outputs to use a different compression type than the job output. (omalley via cutting) 39. HADOOP-671. Fix file cache to check for pre-existence before creating . (Mahadev Konar via cutting) 40. HADOOP-665. Extend many DFSShell commands to accept multiple arguments. Now commands like "ls", "rm", etc. will operate on multiple files. (Dhruba Borthakur via cutting) Release 0.7.2 - 2006-10-18 1. HADOOP-607. Fix a bug where classes included in job jars were not found by tasks. (Mahadev Konar via cutting) 2. HADOOP-609. Add a unit test that checks that classes in job jars can be found by tasks. Also modify unit tests to specify multiple local directories. (Mahadev Konar via cutting) Release 0.7.1 - 2006-10-11 1. HADOOP-593. Fix a NullPointerException in the JobTracker. (omalley via cutting) 2. HADOOP-592. Fix a NullPointerException in the IPC Server. Also consistently log when stale calls are discarded. (omalley via cutting) 3. HADOOP-594. Increase the DFS safe-mode threshold from .95 to .999, so that nearly all blocks must be reported before filesystem modifications are permitted. (Konstantin Shvachko via cutting) 4. HADOOP-598. Fix tasks to retry when reporting completion, so that a single RPC timeout won't fail a task. (omalley via cutting) 5. HADOOP-597. Fix TaskTracker to not discard map outputs for errors in transmitting them to reduce nodes. (omalley via cutting) Release 0.7.0 - 2006-10-06 1. HADOOP-243. Fix rounding in the display of task and job progress so that things are not shown to be 100% complete until they are in fact finished. (omalley via cutting) 2. HADOOP-438. Limit the length of absolute paths in DFS, since the file format used to store pathnames has some limitations. (Wendy Chien via cutting) 3. HADOOP-530. Improve error messages in SequenceFile when keys or values are of the wrong type. (Hairong Kuang via cutting) 4. HADOOP-288. Add a file caching system and use it in MapReduce to cache job jar files on slave nodes. (Mahadev Konar via cutting) 5. HADOOP-533. Fix unit test to not modify conf directory. (Hairong Kuang via cutting) 6. HADOOP-527. Permit specification of the local address that various Hadoop daemons should bind to. (Philippe Gassmann via cutting) 7. HADOOP-542. Updates to contrib/streaming: reformatted source code, on-the-fly merge sort, a fix for HADOOP-540, etc. (Michel Tourn via cutting) 8. HADOOP-545. Remove an unused config file parameter. (Philippe Gassmann via cutting) 9. HADOOP-548. Add an Ant property "test.output" to build.xml that causes test output to be logged to the console. (omalley via cutting) 10. HADOOP-261. Record an error message when map output is lost. (omalley via cutting) 11. HADOOP-293. Report the full list of task error messages in the web ui, not just the most recent. (omalley via cutting) 12. HADOOP-551. Restore JobClient's console printouts to only include a maximum of one update per one percent of progress. (omalley via cutting) 13. HADOOP-306. Add a "safe" mode to DFS. The name node enters this when less than a specified percentage of file data is complete. Currently safe mode is only used on startup, but eventually it will also be entered when datanodes disconnect and file data becomes incomplete. While in safe mode no filesystem modifications are permitted and block replication is inhibited. (Konstantin Shvachko via cutting) 14. HADOOP-431. Change 'dfs -rm' to not operate recursively and add a new command, 'dfs -rmr' which operates recursively. (Sameer Paranjpye via cutting) 15. HADOOP-263. Include timestamps for job transitions. The web interface now displays the start and end times of tasks and the start times of sorting and reducing for reduce tasks. Also, extend ObjectWritable to handle enums, so that they can be passed as RPC parameters. (Sanjay Dahiya via cutting) 16. HADOOP-556. Contrib/streaming: send keep-alive reports to task tracker every 10 seconds rather than every 100 records, to avoid task timeouts. (Michel Tourn via cutting) 17. HADOOP-547. Fix reduce tasks to ping tasktracker while copying data, rather than only between copies, avoiding task timeouts. (Sanjay Dahiya via cutting) 18. HADOOP-537. Fix src/c++/libhdfs build process to create files in build/, no longer modifying the source tree. (Arun C Murthy via cutting) 19. HADOOP-487. Throw a more informative exception for unknown RPC hosts. (Sameer Paranjpye via cutting) 20. HADOOP-559. Add file name globbing (pattern matching) support to the FileSystem API, and use it in DFSShell ('bin/hadoop dfs') commands. (Hairong Kuang via cutting) 21. HADOOP-508. Fix a bug in FSDataInputStream. Incorrect data was returned after seeking to a random location. (Milind Bhandarkar via cutting) 22. HADOOP-560. Add a "killed" task state. This can be used to distinguish kills from other failures. Task state has also been converted to use an enum type instead of an int, uncovering a bug elsewhere. The web interface is also updated to display killed tasks. (omalley via cutting) 23. HADOOP-423. Normalize Paths containing directories named "." and "..", using the standard, unix interpretation. Also add checks in DFS, prohibiting the use of "." or ".." as directory or file names. (Wendy Chien via cutting) 24. HADOOP-513. Replace map output handling with a servlet, rather than a JSP page. This fixes an issue where IllegalStateException's were logged, sets content-length correctly, and better handles some errors. (omalley via cutting) 25. HADOOP-552. Improved error checking when copying map output files to reduce nodes. (omalley via cutting) 26. HADOOP-566. Fix scripts to work correctly when accessed through relative symbolic links. (Lee Faris via cutting) 27. HADOOP-519. Add positioned read methods to FSInputStream. These permit one to read from a stream without moving its position, and can hence be performed by multiple threads at once on a single stream. Implement an optimized version for DFS and local FS. (Milind Bhandarkar via cutting) 28. HADOOP-522. Permit block compression with MapFile and SetFile. Since these formats are always sorted, block compression can provide a big advantage. (cutting) 29. HADOOP-567. Record version and revision information in builds. A package manifest is added to the generated jar file containing version information, and a VersionInfo utility is added that includes further information, including the build date and user, and the subversion revision and repository. A 'bin/hadoop version' comand is added to show this information, and it is also added to various web interfaces. (omalley via cutting) 30. HADOOP-568. Fix so that errors while initializing tasks on a tasktracker correctly report the task as failed to the jobtracker, so that it will be rescheduled. (omalley via cutting) 31. HADOOP-550. Disable automatic UTF-8 validation in Text. This permits, e.g., TextInputFormat to again operate on non-UTF-8 data. (Hairong and Mahadev via cutting) 32. HADOOP-343. Fix mapred copying so that a failed tasktracker doesn't cause other copies to slow. (Sameer Paranjpye via cutting) 33. HADOOP-239. Add a persistent job history mechanism, so that basic job statistics are not lost after 24 hours and/or when the jobtracker is restarted. (Sanjay Dahiya via cutting) 34. HADOOP-506. Ignore heartbeats from stale task trackers. (Sanjay Dahiya via cutting) 35. HADOOP-255. Discard stale, queued IPC calls. Do not process calls whose clients will likely time out before they receive a response. When the queue is full, new calls are now received and queued, and the oldest calls are discarded, so that, when servers get bogged down, they no longer develop a backlog on the socket. This should improve some DFS namenode failure modes. (omalley via cutting) 36. HADOOP-581. Fix datanode to not reset itself on communications errors with the namenode. If a request to the namenode fails, the datanode should retry, not restart. This reduces the load on the namenode, since restarts cause a resend of the block report. (omalley via cutting) Release 0.6.2 - 2006-09-18 1. HADOOP-532. Fix a bug reading value-compressed sequence files, where an exception was thrown reporting that the full value had not been read. (omalley via cutting) 2. HADOOP-534. Change the default value class in JobConf to be Text instead of the now-deprecated UTF8. This fixes the Grep example program, which was updated to use Text, but relies on this default. (Hairong Kuang via cutting) Release 0.6.1 - 2006-09-13 1. HADOOP-520. Fix a bug in libhdfs, where write failures were not correctly returning error codes. (Arun C Murthy via cutting) 2. HADOOP-523. Fix a NullPointerException when TextInputFormat is explicitly specified. Also add a test case for this. (omalley via cutting) 3. HADOOP-521. Fix another NullPointerException finding the ClassLoader when using libhdfs. (omalley via cutting) 4. HADOOP-526. Fix a NullPointerException when attempting to start two datanodes in the same directory. (Milind Bhandarkar via cutting) 5. HADOOP-529. Fix a NullPointerException when opening value-compressed sequence files generated by pre-0.6.0 Hadoop. (omalley via cutting) Release 0.6.0 - 2006-09-08 1. HADOOP-427. Replace some uses of DatanodeDescriptor in the DFS web UI code with DatanodeInfo, the preferred public class. (Devaraj Das via cutting) 2. HADOOP-426. Fix streaming contrib module to work correctly on Solaris. This was causing nightly builds to fail. (Michel Tourn via cutting) 3. HADOOP-400. Improvements to task assignment. Tasks are no longer re-run on nodes where they have failed (unless no other node is available). Also, tasks are better load-balanced among nodes. (omalley via cutting) 4. HADOOP-324. Fix datanode to not exit when a disk is full, but rather simply to fail writes. (Wendy Chien via cutting) 5. HADOOP-434. Change smallJobsBenchmark to use standard Hadoop scripts. (Sanjay Dahiya via cutting) 6. HADOOP-453. Fix a bug in Text.setCapacity(). (siren via cutting) 7. HADOOP-450. Change so that input types are determined by the RecordReader rather than specified directly in the JobConf. This facilitates jobs with a variety of input types. WARNING: This contains incompatible API changes! The RecordReader interface has two new methods that all user-defined InputFormats must now define. Also, the values returned by TextInputFormat are no longer of class UTF8, but now of class Text. 8. HADOOP-436. Fix an error-handling bug in the web ui. (Devaraj Das via cutting) 9. HADOOP-455. Fix a bug in Text, where DEL was not permitted. (Hairong Kuang via cutting) 10. HADOOP-456. Change the DFS namenode to keep a persistent record of the set of known datanodes. This will be used to implement a "safe mode" where filesystem changes are prohibited when a critical percentage of the datanodes are unavailable. (Konstantin Shvachko via cutting) 11. HADOOP-322. Add a job control utility. This permits one to specify job interdependencies. Each job is submitted only after the jobs it depends on have successfully completed. (Runping Qi via cutting) 12. HADOOP-176. Fix a bug in IntWritable.Comparator. (Dick King via cutting) 13. HADOOP-421. Replace uses of String in recordio package with Text class, for improved handling of UTF-8 data. (Milind Bhandarkar via cutting) 14. HADOOP-464. Improved error message when job jar not found. (Michel Tourn via cutting) 15. HADOOP-469. Fix /bin/bash specifics that have crept into our /bin/sh scripts since HADOOP-352. (Jean-Baptiste Quenot via cutting) 16. HADOOP-468. Add HADOOP_NICENESS environment variable to set scheduling priority for daemons. (Vetle Roeim via cutting) 17. HADOOP-473. Fix TextInputFormat to correctly handle more EOL formats. Things now work correctly with CR, LF or CRLF. (Dennis Kubes & James White via cutting) 18. HADOOP-461. Make Java 1.5 an explicit requirement. (cutting) 19. HADOOP-54. Add block compression to SequenceFile. One may now specify that blocks of keys and values are compressed together, improving compression for small keys and values. SequenceFile.Writer's constructor is now deprecated and replaced with a factory method. (Arun C Murthy via cutting) 20. HADOOP-281. Prohibit DFS files that are also directories. (Wendy Chien via cutting) 21. HADOOP-486. Add the job username to JobStatus instances returned by JobClient. (Mahadev Konar via cutting) 22. HADOOP-437. contrib/streaming: Add support for gzipped inputs. (Michel Tourn via cutting) 23. HADOOP-463. Add variable expansion to config files. Configuration property values may now contain variable expressions. A variable is referenced with the syntax '${variable}'. Variables values are found first in the configuration, and then in Java system properties. The default configuration is modified so that temporary directories are now under ${hadoop.tmp.dir}, which is, by default, /tmp/hadoop-${user.name}. (Michel Tourn via cutting) 24. HADOOP-419. Fix a NullPointerException finding the ClassLoader when using libhdfs. (omalley via cutting) 25. HADOOP-460. Fix contrib/smallJobsBenchmark to use Text instead of UTF8. (Sanjay Dahiya via cutting) 26. HADOOP-196. Fix Configuration(Configuration) constructor to work correctly. (Sami Siren via cutting) 27. HADOOP-501. Fix Configuration.toString() to handle URL resources. (Thomas Friol via cutting) 28. HADOOP-499. Reduce the use of Strings in contrib/streaming, replacing them with Text for better performance. (Hairong Kuang via cutting) 29. HADOOP-64. Manage multiple volumes with a single DataNode. Previously DataNode would create a separate daemon per configured volume, each with its own connection to the NameNode. Now all volumes are handled by a single DataNode daemon, reducing the load on the NameNode. (Milind Bhandarkar via cutting) 30. HADOOP-424. Fix MapReduce so that jobs which generate zero splits do not fail. (Fr??d??ric Bertin via cutting) 31. HADOOP-408. Adjust some timeouts and remove some others so that unit tests run faster. (cutting) 32. HADOOP-507. Fix an IllegalAccessException in DFS. (omalley via cutting) 33. HADOOP-320. Fix so that checksum files are correctly copied when the destination of a file copy is a directory. (Hairong Kuang via cutting) 34. HADOOP-286. In DFSClient, avoid pinging the NameNode with renewLease() calls when no files are being written. (Konstantin Shvachko via cutting) 35. HADOOP-312. Close idle IPC connections. All IPC connections were cached forever. Now, after a connection has been idle for more than a configurable amount of time (one second by default), the connection is closed, conserving resources on both client and server. (Devaraj Das via cutting) 36. HADOOP-497. Permit the specification of the network interface and nameserver to be used when determining the local hostname advertised by datanodes and tasktrackers. (Lorenzo Thione via cutting) 37. HADOOP-441. Add a compression codec API and extend SequenceFile to use it. This will permit the use of alternate compression codecs in SequenceFile. (Arun C Murthy via cutting) 38. HADOOP-483. Improvements to libhdfs build and documentation. (Arun C Murthy via cutting) 39. HADOOP-458. Fix a memory corruption bug in libhdfs. (Arun C Murthy via cutting) 40. HADOOP-517. Fix a contrib/streaming bug in end-of-line detection. (Hairong Kuang via cutting) 41. HADOOP-474. Add CompressionCodecFactory, and use it in TextInputFormat and TextOutputFormat. Compressed input files are automatically decompressed when they have the correct extension. Output files will, when output compression is specified, be generated with an approprate extension. Also add a gzip codec and fix problems with UTF8 text inputs. (omalley via cutting) Release 0.5.0 - 2006-08-04 1. HADOOP-352. Fix shell scripts to use /bin/sh instead of /bin/bash, for better portability. (Jean-Baptiste Quenot via cutting) 2. HADOOP-313. Permit task state to be saved so that single tasks may be manually re-executed when debugging. (omalley via cutting) 3. HADOOP-339. Add method to JobClient API listing jobs that are not yet complete, i.e., that are queued or running. (Mahadev Konar via cutting) 4. HADOOP-355. Updates to the streaming contrib module, including API fixes, making reduce optional, and adding an input type for StreamSequenceRecordReader. (Michel Tourn via cutting) 5. HADOOP-358. Fix a NPE bug in Path.equals(). (Fr??d??ric Bertin via cutting) 6. HADOOP-327. Fix ToolBase to not call System.exit() when exceptions are thrown. (Hairong Kuang via cutting) 7. HADOOP-359. Permit map output to be compressed. (omalley via cutting) 8. HADOOP-341. Permit input URI to CopyFiles to use the HTTP protocol. This lets one, e.g., more easily copy log files into DFS. (Arun C Murthy via cutting) 9. HADOOP-361. Remove unix dependencies from streaming contrib module tests, making them pure java. (Michel Tourn via cutting) 10. HADOOP-354. Make public methods to stop DFS daemons. (Barry Kaplan via cutting) 11. HADOOP-252. Add versioning to RPC protocols. (Milind Bhandarkar via cutting) 12. HADOOP-356. Add contrib to "compile" and "test" build targets, so that this code is better maintained. (Michel Tourn via cutting) 13. HADOOP-307. Add smallJobsBenchmark contrib module. This runs lots of small jobs, in order to determine per-task overheads. (Sanjay Dahiya via cutting) 14. HADOOP-342. Add a tool for log analysis: Logalyzer. (Arun C Murthy via cutting) 15. HADOOP-347. Add web-based browsing of DFS content. The namenode redirects browsing requests to datanodes. Content requests are redirected to datanodes where the data is local when possible. (Devaraj Das via cutting) 16. HADOOP-351. Make Hadoop IPC kernel independent of Jetty. (Devaraj Das via cutting) 17. HADOOP-237. Add metric reporting to DFS and MapReduce. With only minor configuration changes, one can now monitor many Hadoop system statistics using Ganglia or other monitoring systems. (Milind Bhandarkar via cutting) 18. HADOOP-376. Fix datanode's HTTP server to scan for a free port. (omalley via cutting) 19. HADOOP-260. Add --config option to shell scripts, specifying an alternate configuration directory. (Milind Bhandarkar via cutting) 20. HADOOP-381. Permit developers to save the temporary files for tasks whose names match a regular expression, to facilliate debugging. (omalley via cutting) 21. HADOOP-344. Fix some Windows-related problems with DF. (Konstantin Shvachko via cutting) 22. HADOOP-380. Fix reduce tasks to poll less frequently for map outputs. (Mahadev Konar via cutting) 23. HADOOP-321. Refactor DatanodeInfo, in preparation for HADOOP-306. (Konstantin Shvachko & omalley via cutting) 24. HADOOP-385. Fix some bugs in record io code generation. (Milind Bhandarkar via cutting) 25. HADOOP-302. Add new Text class to replace UTF8, removing limitations of that class. Also refactor utility methods for writing zero-compressed integers (VInts and VLongs). (Hairong Kuang via cutting) 26. HADOOP-335. Refactor DFS namespace/transaction logging in namenode. (Konstantin Shvachko via cutting) 27. HADOOP-375. Fix handling of the datanode HTTP daemon's port so that multiple datanode's can be run on a single host. (Devaraj Das via cutting) 28. HADOOP-386. When removing excess DFS block replicas, remove those on nodes with the least free space first. (Johan Oskarson via cutting) 29. HADOOP-389. Fix intermittent failures of mapreduce unit tests. Also fix some build dependencies. (Mahadev & Konstantin via cutting) 30. HADOOP-362. Fix a problem where jobs hang when status messages are recieved out-of-order. (omalley via cutting) 31. HADOOP-394. Change order of DFS shutdown in unit tests to minimize errors logged. (Konstantin Shvachko via cutting) 32. HADOOP-396. Make DatanodeID implement Writable. (Konstantin Shvachko via cutting) 33. HADOOP-377. Permit one to add URL resources to a Configuration. (Jean-Baptiste Quenot via cutting) 34. HADOOP-345. Permit iteration over Configuration key/value pairs. (Michel Tourn via cutting) 35. HADOOP-409. Streaming contrib module: make configuration properties available to commands as environment variables. (Michel Tourn via cutting) 36. HADOOP-369. Add -getmerge option to dfs command that appends all files in a directory into a single local file. (Johan Oskarson via cutting) 37. HADOOP-410. Replace some TreeMaps with HashMaps in DFS, for a 17% performance improvement. (Milind Bhandarkar via cutting) 38. HADOOP-411. Add unit tests for command line parser. (Hairong Kuang via cutting) 39. HADOOP-412. Add MapReduce input formats that support filtering of SequenceFile data, including sampling and regex matching. Also, move JobConf.newInstance() to a new utility class. (Hairong Kuang via cutting) 40. HADOOP-226. Fix fsck command to properly consider replication counts, now that these can vary per file. (Bryan Pendleton via cutting) 41. HADOOP-425. Add a Python MapReduce example, using Jython. (omalley via cutting) Release 0.4.0 - 2006-06-28 1. HADOOP-298. Improved progress reports for CopyFiles utility, the distributed file copier. (omalley via cutting) 2. HADOOP-299. Fix the task tracker, permitting multiple jobs to more easily execute at the same time. (omalley via cutting) 3. HADOOP-250. Add an HTTP user interface to the namenode, running on port 50070. (Devaraj Das via cutting) 4. HADOOP-123. Add MapReduce unit tests that run a jobtracker and tasktracker, greatly increasing code coverage. (Milind Bhandarkar via cutting) 5. HADOOP-271. Add links from jobtracker's web ui to tasktracker's web ui. Also attempt to log a thread dump of child processes before they're killed. (omalley via cutting) 6. HADOOP-210. Change RPC server to use a selector instead of a thread per connection. This should make it easier to scale to larger clusters. Note that this incompatibly changes the RPC protocol: clients and servers must both be upgraded to the new version to ensure correct operation. (Devaraj Das via cutting) 7. HADOOP-311. Change DFS client to retry failed reads, so that a single read failure will not alone cause failure of a task. (omalley via cutting) 8. HADOOP-314. Remove the "append" phase when reducing. Map output files are now directly passed to the sorter, without first appending them into a single file. Now, the first third of reduce progress is "copy" (transferring map output to reduce nodes), the middle third is "sort" (sorting map output) and the last third is "reduce" (generating output). Long-term, the "sort" phase will also be removed. (omalley via cutting) 9. HADOOP-316. Fix a potential deadlock in the jobtracker. (omalley via cutting) 10. HADOOP-319. Fix FileSystem.close() to remove the FileSystem instance from the cache. (Hairong Kuang via cutting) 11. HADOOP-135. Fix potential deadlock in JobTracker by acquiring locks in a consistent order. (omalley via cutting) 12. HADOOP-278. Check for existence of input directories before starting MapReduce jobs, making it easier to debug this common error. (omalley via cutting) 13. HADOOP-304. Improve error message for UnregisterdDatanodeException to include expected node name. (Konstantin Shvachko via cutting) 14. HADOOP-305. Fix TaskTracker to ask for new tasks as soon as a task is finished, rather than waiting for the next heartbeat. This improves performance when tasks are short. (Mahadev Konar via cutting) 15. HADOOP-59. Add support for generic command line options. One may now specify the filesystem (-fs), the MapReduce jobtracker (-jt), a config file (-conf) or any configuration property (-D). The "dfs", "fsck", "job", and "distcp" commands currently support this, with more to be added. (Hairong Kuang via cutting) 16. HADOOP-296. Permit specification of the amount of reserved space on a DFS datanode. One may specify both the percentage free and the number of bytes. (Johan Oskarson via cutting) 17. HADOOP-325. Fix a problem initializing RPC parameter classes, and remove the workaround used to initialize classes. (omalley via cutting) 18. HADOOP-328. Add an option to the "distcp" command to ignore read errors while copying. (omalley via cutting) 19. HADOOP-27. Don't allocate tasks to trackers whose local free space is too low. (Johan Oskarson via cutting) 20. HADOOP-318. Keep slow DFS output from causing task timeouts. This incompatibly changes some public interfaces, adding a parameter to OutputFormat.getRecordWriter() and the new method Reporter.progress(), but it makes lots of tasks succeed that were previously failing. (Milind Bhandarkar via cutting) Release 0.3.2 - 2006-06-09 1. HADOOP-275. Update the streaming contrib module to use log4j for its logging. (Michel Tourn via cutting) 2. HADOOP-279. Provide defaults for log4j logging parameters, so that things still work reasonably when Hadoop-specific system properties are not provided. (omalley via cutting) 3. HADOOP-280. Fix a typo in AllTestDriver which caused the wrong test to be run when "DistributedFSCheck" was specified. (Konstantin Shvachko via cutting) 4. HADOOP-240. DFS's mkdirs() implementation no longer logs a warning when the directory already exists. (Hairong Kuang via cutting) 5. HADOOP-285. Fix DFS datanodes to be able to re-join the cluster after the connection to the namenode is lost. (omalley via cutting) 6. HADOOP-277. Fix a race condition when creating directories. (Sameer Paranjpye via cutting) 7. HADOOP-289. Improved exception handling in DFS datanode. (Konstantin Shvachko via cutting) 8. HADOOP-292. Fix client-side logging to go to standard error rather than standard output, so that it can be distinguished from application output. (omalley via cutting) 9. HADOOP-294. Fixed bug where conditions for retrying after errors in the DFS client were reversed. (omalley via cutting) Release 0.3.1 - 2006-06-05 1. HADOOP-272. Fix a bug in bin/hadoop setting log parameters. (omalley & cutting) 2. HADOOP-274. Change applications to log to standard output rather than to a rolling log file like daemons. (omalley via cutting) 3. HADOOP-262. Fix reduce tasks to report progress while they're waiting for map outputs, so that they do not time out. (Mahadev Konar via cutting) 4. HADOOP-245 and HADOOP-246. Improvements to record io package. (Mahadev Konar via cutting) 5. HADOOP-276. Add logging config files to jar file so that they're always found. (omalley via cutting) Release 0.3.0 - 2006-06-02 1. HADOOP-208. Enhance MapReduce web interface, adding new pages for failed tasks, and tasktrackers. (omalley via cutting) 2. HADOOP-204. Tweaks to metrics package. (David Bowen via cutting) 3. HADOOP-209. Add a MapReduce-based file copier. This will copy files within or between file systems in parallel. (Milind Bhandarkar via cutting) 4. HADOOP-146. Fix DFS to check when randomly generating a new block id that no existing blocks already have that id. (Milind Bhandarkar via cutting) 5. HADOOP-180. Make a daemon thread that does the actual task clean ups, so that the main offerService thread in the taskTracker doesn't get stuck and miss his heartbeat window. This was killing many task trackers as big jobs finished (300+ tasks / node). (omalley via cutting) 6. HADOOP-200. Avoid transmitting entire list of map task names to reduce tasks. Instead just transmit the number of map tasks and henceforth refer to them by number when collecting map output. (omalley via cutting) 7. HADOOP-219. Fix a NullPointerException when handling a checksum exception under SequenceFile.Sorter.sort(). (cutting & stack) 8. HADOOP-212. Permit alteration of the file block size in DFS. The default block size for new files may now be specified in the configuration with the dfs.block.size property. The block size may also be specified when files are opened. (omalley via cutting) 9. HADOOP-218. Avoid accessing configuration while looping through tasks in JobTracker. (Mahadev Konar via cutting) 10. HADOOP-161. Add hashCode() method to DFS's Block. (Milind Bhandarkar via cutting) 11. HADOOP-115. Map output types may now be specified. These are also used as reduce input types, thus permitting reduce input types to differ from reduce output types. (Runping Qi via cutting) 12. HADOOP-216. Add task progress to task status page. (Bryan Pendelton via cutting) 13. HADOOP-233. Add web server to task tracker that shows running tasks and logs. Also add log access to job tracker web interface. (omalley via cutting) 14. HADOOP-205. Incorporate pending tasks into tasktracker load calculations. (Mahadev Konar via cutting) 15. HADOOP-247. Fix sort progress to better handle exceptions. (Mahadev Konar via cutting) 16. HADOOP-195. Improve performance of the transfer of map outputs to reduce nodes by performing multiple transfers in parallel, each on a separate socket. (Sameer Paranjpye via cutting) 17. HADOOP-251. Fix task processes to be tolerant of failed progress reports to their parent process. (omalley via cutting) 18. HADOOP-325. Improve the FileNotFound exceptions thrown by LocalFileSystem to include the name of the file. (Benjamin Reed via cutting) 19. HADOOP-254. Use HTTP to transfer map output data to reduce nodes. This, together with HADOOP-195, greatly improves the performance of these transfers. (omalley via cutting) 20. HADOOP-163. Cause datanodes that\ are unable to either read or write data to exit, so that the namenode will no longer target them for new blocks and will replicate their data on other nodes. (Hairong Kuang via cutting) 21. HADOOP-222. Add a -setrep option to the dfs commands that alters file replication levels. (Johan Oskarson via cutting) 22. HADOOP-75. In DFS, only check for a complete file when the file is closed, rather than as each block is written. (Milind Bhandarkar via cutting) 23. HADOOP-124. Change DFS so that datanodes are identified by a persistent ID rather than by host and port. This solves a number of filesystem integrity problems, when, e.g., datanodes are restarted. (Konstantin Shvachko via cutting) 24. HADOOP-256. Add a C API for DFS. (Arun C Murthy via cutting) 25. HADOOP-211. Switch to use the Jakarta Commons logging internally, configured to use log4j by default. (Arun C Murthy and cutting) 26. HADOOP-265. Tasktracker now fails to start if it does not have a writable local directory for temporary files. In this case, it logs a message to the JobTracker and exits. (Hairong Kuang via cutting) 27. HADOOP-270. Fix potential deadlock in datanode shutdown. (Hairong Kuang via cutting) Release 0.2.1 - 2006-05-12 1. HADOOP-199. Fix reduce progress (broken by HADOOP-182). (omalley via cutting) 2. HADOOP-201. Fix 'bin/hadoop dfs -report'. (cutting) 3. HADOOP-207. Fix JDK 1.4 incompatibility introduced by HADOOP-96. System.getenv() does not work in JDK 1.4. (Hairong Kuang via cutting) Release 0.2.0 - 2006-05-05 1. Fix HADOOP-126. 'bin/hadoop dfs -cp' now correctly copies .crc files. (Konstantin Shvachko via cutting) 2. Fix HADOOP-51. Change DFS to support per-file replication counts. (Konstantin Shvachko via cutting) 3. Fix HADOOP-131. Add scripts to start/stop dfs and mapred daemons. Use these in start/stop-all scripts. (Chris Mattmann via cutting) 4. Stop using ssh options by default that are not yet in widely used versions of ssh. Folks can still enable their use by uncommenting a line in conf/hadoop-env.sh. (cutting) 5. Fix HADOOP-92. Show information about all attempts to run each task in the web ui. (Mahadev konar via cutting) 6. Fix HADOOP-128. Improved DFS error handling. (Owen O'Malley via cutting) 7. Fix HADOOP-129. Replace uses of java.io.File with new class named Path. This fixes bugs where java.io.File methods were called directly when FileSystem methods were desired, and reduces the likelihood of such bugs in the future. It also makes the handling of pathnames more consistent between local and dfs FileSystems and between Windows and Unix. java.io.File-based methods are still available for back-compatibility, but are deprecated and will be removed once 0.2 is released. (cutting) 8. Change dfs.data.dir and mapred.local.dir to be comma-separated lists of directories, no longer be space-separated. This fixes several bugs on Windows. (cutting) 9. Fix HADOOP-144. Use mapred task id for dfs client id, to facilitate debugging. (omalley via cutting) 10. Fix HADOOP-143. Do not line-wrap stack-traces in web ui. (omalley via cutting) 11. Fix HADOOP-118. In DFS, improve clean up of abandoned file creations. (omalley via cutting) 12. Fix HADOOP-138. Stop multiple tasks in a single heartbeat, rather than one per heartbeat. (Stefan via cutting) 13. Fix HADOOP-139. Remove a potential deadlock in LocalFileSystem.lock(). (Igor Bolotin via cutting) 14. Fix HADOOP-134. Don't hang jobs when the tasktracker is misconfigured to use an un-writable local directory. (omalley via cutting) 15. Fix HADOOP-115. Correct an error message. (Stack via cutting) 16. Fix HADOOP-133. Retry pings from child to parent, in case of (local) communcation problems. Also log exit status, so that one can distinguish patricide from other deaths. (omalley via cutting) 17. Fix HADOOP-142. Avoid re-running a task on a host where it has previously failed. (omalley via cutting) 18. Fix HADOOP-148. Maintain a task failure count for each tasktracker and display it in the web ui. (omalley via cutting) 19. Fix HADOOP-151. Close a potential socket leak, where new IPC connection pools were created per configuration instance that RPCs use. Now a global RPC connection pool is used again, as originally intended. (cutting) 20. Fix HADOOP-69. Don't throw a NullPointerException when getting hints for non-existing file split. (Bryan Pendelton via cutting) 21. Fix HADOOP-157. When a task that writes dfs files (e.g., a reduce task) failed and was retried, it would fail again and again, eventually failing the job. The problem was that dfs did not yet know that the failed task had abandoned the files, and would not yet let another task create files with the same names. Dfs now retries when creating a file long enough for locks on abandoned files to expire. (omalley via cutting) 22. Fix HADOOP-150. Improved task names that include job names. (omalley via cutting) 23. Fix HADOOP-162. Fix ConcurrentModificationException when releasing file locks. (omalley via cutting) 24. Fix HADOOP-132. Initial check-in of new Metrics API, including implementations for writing metric data to a file and for sending it to Ganglia. (David Bowen via cutting) 25. Fix HADOOP-160. Remove some uneeded synchronization around time-consuming operations in the TaskTracker. (omalley via cutting) 26. Fix HADOOP-166. RPCs failed when passed subclasses of a declared parameter type. This is fixed by changing ObjectWritable to store both the declared type and the instance type for Writables. Note that this incompatibly changes the format of ObjectWritable and will render unreadable any ObjectWritables stored in files. Nutch only uses ObjectWritable in intermediate files, so this should not be a problem for Nutch. (Stefan & cutting) 27. Fix HADOOP-168. MapReduce RPC protocol methods should all declare IOException, so that timeouts are handled appropriately. (omalley via cutting) 28. Fix HADOOP-169. Don't fail a reduce task if a call to the jobtracker to locate map outputs fails. (omalley via cutting) 29. Fix HADOOP-170. Permit FileSystem clients to examine and modify the replication count of individual files. Also fix a few replication-related bugs. (Konstantin Shvachko via cutting) 30. Permit specification of a higher replication levels for job submission files (job.xml and job.jar). This helps with large clusters, since these files are read by every node. (cutting) 31. HADOOP-173. Optimize allocation of tasks with local data. (cutting) 32. HADOOP-167. Reduce number of Configurations and JobConf's created. (omalley via cutting) 33. NUTCH-256. Change FileSystem#createNewFile() to create a .crc file. The lack of a .crc file was causing warnings. (cutting) 34. HADOOP-174. Change JobClient to not abort job until it has failed to contact the job tracker for five attempts, not just one as before. (omalley via cutting) 35. HADOOP-177. Change MapReduce web interface to page through tasks. Previously, when jobs had more than a few thousand tasks they could crash web browsers. (Mahadev Konar via cutting) 36. HADOOP-178. In DFS, piggyback blockwork requests from datanodes on heartbeat responses from namenode. This reduces the volume of RPC traffic. Also move startup delay in blockwork from datanode to namenode. This fixes a problem where restarting the namenode triggered a lot of uneeded replication. (Hairong Kuang via cutting) 37. HADOOP-183. If the DFS namenode is restarted with different minimum and/or maximum replication counts, existing files' replication counts are now automatically adjusted to be within the newly configured bounds. (Hairong Kuang via cutting) 38. HADOOP-186. Better error handling in TaskTracker's top-level loop. Also improve calculation of time to send next heartbeat. (omalley via cutting) 39. HADOOP-187. Add two MapReduce examples/benchmarks. One creates files containing random data. The second sorts the output of the first. (omalley via cutting) 40. HADOOP-185. Fix so that, when a task tracker times out making the RPC asking for a new task to run, the job tracker does not think that it is actually running the task returned. (omalley via cutting) 41. HADOOP-190. If a child process hangs after it has reported completion, its output should not be lost. (Stack via cutting) 42. HADOOP-184. Re-structure some test code to better support testing on a cluster. (Mahadev Konar via cutting) 43. HADOOP-191 Add streaming package, Hadoop's first contrib module. This permits folks to easily submit MapReduce jobs whose map and reduce functions are implemented by shell commands. Use 'bin/hadoop jar build/hadoop-streaming.jar' to get details. (Michel Tourn via cutting) 44. HADOOP-189. Fix MapReduce in standalone configuration to correctly handle job jar files that contain a lib directory with nested jar files. (cutting) 45. HADOOP-65. Initial version of record I/O framework that enables the specification of record types and generates marshalling code in both Java and C++. Generated Java code implements WritableComparable, but is not yet otherwise used by Hadoop. (Milind Bhandarkar via cutting) 46. HADOOP-193. Add a MapReduce-based FileSystem benchmark. (Konstantin Shvachko via cutting) 47. HADOOP-194. Add a MapReduce-based FileSystem checker. This reads every block in every file in the filesystem. (Konstantin Shvachko via cutting) 48. HADOOP-182. Fix so that lost task trackers to not change the status of reduce tasks or completed jobs. Also fixes the progress meter so that failed tasks are subtracted. (omalley via cutting) 49. HADOOP-96. Logging improvements. Log files are now separate from standard output and standard error files. Logs are now rolled. Logging of all DFS state changes can be enabled, to facilitate debugging. (Hairong Kuang via cutting) Release 0.1.1 - 2006-04-08 1. Added CHANGES.txt, logging all significant changes to Hadoop. (cutting) 2. Fix MapReduceBase.close() to throw IOException, as declared in the Closeable interface. This permits subclasses which override this method to throw that exception. (cutting) 3. Fix HADOOP-117. Pathnames were mistakenly transposed in JobConf.getLocalFile() causing many mapred temporary files to not be removed. (Raghavendra Prabhu via cutting) 4. Fix HADOOP-116. Clean up job submission files when jobs complete. (cutting) 5. Fix HADOOP-125. Fix handling of absolute paths on Windows (cutting) Release 0.1.0 - 2006-04-01 1. The first release of Hadoop.