hbase/CHANGES.txt

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HBase Change Log
Trunk (unreleased changes)
INCOMPATIBLE CHANGES
NEW FEATURES
HADOOP-2061 Add new Base64 dialects
OPTIMIZATIONS
BUG FIXES
HADOOP-2059 In tests, exceptions in min dfs shutdown should not fail test
(e.g. nightly #272)
IMPROVEMENTS
HADOOP-2401 Add convenience put method that takes writable
(Johan Oskarsson via Stack)
Branch 0.15 (unreleased changes)
INCOMPATIBLE CHANGES
HADOOP-1931 Hbase scripts take --ARG=ARG_VALUE when should be like hadoop
and do ---ARG ARG_VALUE
NEW FEATURES
HADOOP-1768 FS command using Hadoop FsShell operations
(Edward Yoon via Stack)
HADOOP-1784 Delete: Fix scanners and gets so they work properly in presence
of deletes. Added a deleteAll to remove all cells equal to or
older than passed timestamp. Fixed compaction so deleted cells
do not make it out into compacted output. Ensure also that
versions > column max are dropped compacting.
HADOOP-1720 Addition of HQL (Hbase Query Language) support in Hbase Shell.
The old shell syntax has been replaced by HQL, a small SQL-like
set of operators, for creating, altering, dropping, inserting,
deleting, and selecting, etc., data in hbase.
(Inchul Song and Edward Yoon via Stack)
HADOOP-1913 Build a Lucene index on an HBase table
(Ning Li via Stack)
HADOOP-1957 Web UI with report on cluster state and basic browsing of tables
OPTIMIZATIONS
BUG FIXES
HADOOP-1527 Region server won't start because logdir exists
HADOOP-1723 If master asks region server to shut down, by-pass return of
shutdown message
HADOOP-1729 Recent renaming or META tables breaks hbase shell
HADOOP-1730 unexpected null value causes META scanner to exit (silently)
HADOOP-1747 On a cluster, on restart, regions multiply assigned
HADOOP-1776 Fix for sporadic compaction failures closing and moving
compaction result
HADOOP-1780 Regions are still being doubly assigned
HADOOP-1797 Fix NPEs in MetaScanner constructor
HADOOP-1799 Incorrect classpath in binary version of Hadoop
HADOOP-1805 Region server hang on exit
HADOOP-1785 TableInputFormat.TableRecordReader.next has a bug
(Ning Li via Stack)
HADOOP-1800 output should default utf8 encoding
HADOOP-1801 When hdfs is yanked out from under hbase, hbase should go down gracefully
HADOOP-1813 OOME makes zombie of region server
HADOOP-1814 TestCleanRegionServerExit fails too often on Hudson
HADOOP-1820 Regionserver creates hlogs without bound
(reverted 2007/09/25) (Fixed 2007/09/30)
HADOOP-1821 Replace all String.getBytes() with String.getBytes("UTF-8")
HADOOP-1832 listTables() returns duplicate tables
HADOOP-1834 Scanners ignore timestamp passed on creation
HADOOP-1847 Many HBase tests do not fail well.
HADOOP-1847 Many HBase tests do not fail well. (phase 2)
HADOOP-1870 Once file system failure has been detected, don't check it again
and get on with shutting down the hbase cluster.
HADOOP-1888 NullPointerException in HMemcacheScanner (reprise)
HADOOP-1903 Possible data loss if Exception happens between snapshot and
flush to disk.
HADOOP-1920 Wrapper scripts broken when hadoop in one location and hbase in
another
HADOOP-1923, HADOOP-1924 a) tests fail sporadically because set up and tear
down is inconsistent b) TestDFSAbort failed in nightly #242
HADOOP-1929 Add hbase-default.xml to hbase jar
HADOOP-1941 StopRowFilter throws NPE when passed null row
HADOOP-1966 Make HBase unit tests more reliable in the Hudson environment.
HADOOP-1975 HBase tests failing with java.lang.NumberFormatException
HADOOP-1990 Regression test instability affects nightly and patch builds
HADOOP-1996 TestHStoreFile fails on windows if run multiple times
HADOOP-1937 When the master times out a region server's lease, it is too
aggressive in reclaiming the server's log.
HADOOP-2004 webapp hql formatting bugs
HADOOP_2011 Make hbase daemon scripts take args in same order as hadoop
daemon scripts
HADOOP-2017 TestRegionServerAbort failure in patch build #903 and
nightly #266
HADOOP-2029 TestLogRolling fails too often in patch and nightlies
HADOOP-2038 TestCleanRegionExit failed in patch build #927
IMPROVEMENTS
HADOOP-1737 Make HColumnDescriptor data publically members settable
HADOOP-1746 Clean up findbugs warnings
HADOOP-1757 Bloomfilters: single argument constructor, use enum for bloom
filter types
HADOOP-1760 Use new MapWritable and SortedMapWritable classes from
org.apache.hadoop.io
HADOOP-1793 (Phase 1) Remove TestHClient (Phase2) remove HClient.
HADOOP-1794 Remove deprecated APIs
HADOOP-1802 Startup scripts should wait until hdfs as cleared 'safe mode'
HADOOP-1833 bin/stop_hbase.sh returns before it completes
(Izaak Rubin via Stack)
HADOOP-1835 Updated Documentation for HBase setup/installation
(Izaak Rubin via Stack)
HADOOP-1868 Make default configuration more responsive
HADOOP-1884 Remove useless debugging log messages from hbase.mapred
HADOOP-1856 Add Jar command to hbase shell using Hadoop RunJar util
(Edward Yoon via Stack)
HADOOP-1928 Have master pass the regionserver the filesystem to use
HADOOP-1789 Output formatting
HADOOP-1960 If a region server cannot talk to the master before its lease
times out, it should shut itself down
HADOOP-2035 Add logo to webapps
Below are the list of changes before 2007-08-18
1. HADOOP-1384. HBase omnibus patch. (jimk, Vuk Ercegovac, and Michael Stack)
2. HADOOP-1402. Fix javadoc warnings in hbase contrib. (Michael Stack)
3. HADOOP-1404. HBase command-line shutdown failing (Michael Stack)
4. HADOOP-1397. Replace custom hbase locking with
java.util.concurrent.locks.ReentrantLock (Michael Stack)
5. HADOOP-1403. HBase reliability - make master and region server more fault
tolerant.
6. HADOOP-1418. HBase miscellaneous: unit test for HClient, client to do
'Performance Evaluation', etc.
7. HADOOP-1420, HADOOP-1423. Findbugs changes, remove reference to removed
class HLocking.
8. HADOOP-1424. TestHBaseCluster fails with IllegalMonitorStateException. Fix
regression introduced by HADOOP-1397.
9. HADOOP-1426. Make hbase scripts executable + add test classes to CLASSPATH.
10. HADOOP-1430. HBase shutdown leaves regionservers up.
11. HADOOP-1392. Part1: includes create/delete table; enable/disable table;
add/remove column.
12. HADOOP-1392. Part2: includes table compaction by merging adjacent regions
that have shrunk in size.
13. HADOOP-1445 Support updates across region splits and compactions
14. HADOOP-1460 On shutdown IOException with complaint 'Cannot cancel lease
that is not held'
15. HADOOP-1421 Failover detection, split log files.
For the files modified, also clean up javadoc, class, field and method
visibility (HADOOP-1466)
16. HADOOP-1479 Fix NPE in HStore#get if store file only has keys < passed key.
17. HADOOP-1476 Distributed version of 'Performance Evaluation' script
18. HADOOP-1469 Asychronous table creation
19. HADOOP-1415 Integrate BSD licensed bloom filter implementation.
20. HADOOP-1465 Add cluster stop/start scripts for hbase
21. HADOOP-1415 Provide configurable per-column bloom filters - part 2.
22. HADOOP-1498. Replace boxed types with primitives in many places.
23. HADOOP-1509. Made methods/inner classes in HRegionServer and HClient protected
instead of private for easier extension. Also made HRegion and HRegionInfo public too.
Added an hbase-default.xml property for specifying what HRegionInterface extension to use
for proxy server connection. (James Kennedy via Jim Kellerman)
24. HADOOP-1534. [hbase] Memcache scanner fails if start key not present
25. HADOOP-1537. Catch exceptions in testCleanRegionServerExit so we can see
what is failing.
26. HADOOP-1543 [hbase] Add HClient.tableExists
27. HADOOP-1519 [hbase] map/reduce interface for HBase. (Vuk Ercegovac and
Jim Kellerman)
28. HADOOP-1523 Hung region server waiting on write locks
29. HADOOP-1560 NPE in MiniHBaseCluster on Windows
30. HADOOP-1531 Add RowFilter to HRegion.HScanner
Adds a row filtering interface and two implemenentations: A page scanner,
and a regex row/column-data matcher. (James Kennedy via Stack)
31. HADOOP-1566 Key-making utility
32. HADOOP-1415 Provide configurable per-column bloom filters.
HADOOP-1466 Clean up visibility and javadoc issues in HBase.
33. HADOOP-1538 Provide capability for client specified time stamps in HBase
HADOOP-1466 Clean up visibility and javadoc issues in HBase.
34. HADOOP-1589 Exception handling in HBase is broken over client server connections
35. HADOOP-1375 a simple parser for hbase (Edward Yoon via Stack)
36. HADOOP-1600 Update license in HBase code
37. HADOOP-1589 Exception handling in HBase is broken over client server
38. HADOOP-1574 Concurrent creates of a table named 'X' all succeed
39. HADOOP-1581 Un-openable tablename bug
40. HADOOP-1607 [shell] Clear screen command (Edward Yoon via Stack)
41. HADOOP-1614 [hbase] HClient does not protect itself from simultaneous updates
42. HADOOP-1468 Add HBase batch update to reduce RPC overhead
43. HADOOP-1616 Sporadic TestTable failures
44. HADOOP-1615 Replacing thread notification-based queue with
java.util.concurrent.BlockingQueue in HMaster, HRegionServer
45. HADOOP-1606 Updated implementation of RowFilterSet, RowFilterInterface
(Izaak Rubin via Stack)
46. HADOOP-1579 Add new WhileMatchRowFilter and StopRowFilter filters
(Izaak Rubin via Stack)
47. HADOOP-1637 Fix to HScanner to Support Filters, Add Filter Tests to
TestScanner2 (Izaak Rubin via Stack)
48. HADOOP-1516 HClient fails to readjust when ROOT or META redeployed on new
region server
49. HADOOP-1646 RegionServer OOME's under sustained, substantial loading by
10 concurrent clients
50. HADOOP-1468 Add HBase batch update to reduce RPC overhead (restrict batches
to a single row at a time)
51. HADOOP-1528 HClient for multiple tables (phase 1) (James Kennedy & JimK)
52. HADOOP-1528 HClient for multiple tables (phase 2) all HBase client side code
(except TestHClient and HBaseShell) have been converted to use the new client
side objects (HTable/HBaseAdmin/HConnection) instead of HClient.
53. HADOOP-1528 HClient for multiple tables - expose close table function
54. HADOOP-1466 Clean up warnings, visibility and javadoc issues in HBase.
55. HADOOP-1662 Make region splits faster
56. HADOOP-1678 On region split, master should designate which host should
serve daughter splits. Phase 1: Master balances load for new regions and
when a region server fails.
57. HADOOP-1678 On region split, master should designate which host should
serve daughter splits. Phase 2: Master assigns children of split region
instead of HRegionServer serving both children.
58. HADOOP-1710 All updates should be batch updates
59. HADOOP-1711 HTable API should use interfaces instead of concrete classes as
method parameters and return values
60. HADOOP-1644 Compactions should not block updates
60. HADOOP-1672 HBase Shell should use new client classes
(Edward Yoon via Stack).
61. HADOOP-1709 Make HRegionInterface more like that of HTable
HADOOP-1725 Client find of table regions should not include offlined, split parents