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HDFS-2393. Mark appropriate methods of ClientProtocol with the idempotent annotation. (atm) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-1623@1190088 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Aaron Myers 2011-10-27 23:26:44 +00:00
parent 180646dea3
commit efb2d93f77
2 changed files with 31 additions and 4 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-1623.txt
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@ -17,3 +17,5 @@ HDFS-2301. Start/stop appropriate namenode services when transition to active an
HDFS-2231. Configuration changes for HA namenode. (suresh)
HDFS-2418. Change ConfiguredFailoverProxyProvider to take advantage of HDFS-2231. (atm)
HDFS-2393. Mark appropriate methods of ClientProtocol with the idempotent annotation. (atm)

33
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/ClientProtocol.java
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@ -112,6 +112,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @return a set of server default configuration values
* @throws IOException
*/
@Idempotent
public FsServerDefaults getServerDefaults() throws IOException;
/**
@ -215,6 +216,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException if <code>src</code> contains a symlink
* @throws IOException If an I/O error occurred
*/
@Idempotent
public boolean setReplication(String src, short replication)
throws AccessControlException, DSQuotaExceededException,
FileNotFoundException, SafeModeException, UnresolvedLinkException,
@ -229,6 +231,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException If <code>src</code> contains a symlink
* @throws IOException If an I/O error occurred
*/
@Idempotent
public void setPermission(String src, FsPermission permission)
throws AccessControlException, FileNotFoundException, SafeModeException,
UnresolvedLinkException, IOException;
@ -246,6 +249,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException If <code>src</code> contains a symlink
* @throws IOException If an I/O error occurred
*/
@Idempotent
public void setOwner(String src, String username, String groupname)
throws AccessControlException, FileNotFoundException, SafeModeException,
UnresolvedLinkException, IOException;
@ -318,6 +322,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException If <code>src</code> contains a symlink
* @throws IOException If an I/O error occurred
*/
@Idempotent
public LocatedBlock getAdditionalDatanode(final String src, final ExtendedBlock blk,
final DatanodeInfo[] existings, final DatanodeInfo[] excludes,
final int numAdditionalNodes, final String clientName
@ -355,6 +360,7 @@ public interface ClientProtocol extends VersionedProtocol {
* locations on datanodes).
* @param blocks Array of located blocks to report
*/
@Idempotent
public void reportBadBlocks(LocatedBlock[] blocks) throws IOException;
///////////////////////////////////////
@ -472,6 +478,7 @@ public interface ClientProtocol extends VersionedProtocol {
* RunTimeExceptions:
* @throws InvalidPathException If <code>src</code> is invalid
*/
@Idempotent
public boolean mkdirs(String src, FsPermission masked, boolean createParent)
throws AccessControlException, FileAlreadyExistsException,
FileNotFoundException, NSQuotaExceededException,
@ -492,6 +499,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException If <code>src</code> contains a symlink
* @throws IOException If an I/O error occurred
*/
@Idempotent
public DirectoryListing getListing(String src,
byte[] startAfter,
boolean needLocation)
@ -521,6 +529,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws AccessControlException permission denied
* @throws IOException If an I/O error occurred
*/
@Idempotent
public void renewLease(String clientName) throws AccessControlException,
IOException;
@ -533,6 +542,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @return true if the file is already closed
* @throws IOException
*/
@Idempotent
public boolean recoverLease(String src, String clientName) throws IOException;
public int GET_STATS_CAPACITY_IDX = 0;
@ -544,7 +554,7 @@ public interface ClientProtocol extends VersionedProtocol {
/**
* Get a set of statistics about the filesystem.
* Right now, only three values are returned.
* Right now, only seven values are returned.
* <ul>
* <li> [0] contains the total storage capacity of the system, in bytes.</li>
* <li> [1] contains the total used space of the system, in bytes.</li>
@ -557,6 +567,7 @@ public interface ClientProtocol extends VersionedProtocol {
* Use public constants like {@link #GET_STATS_CAPACITY_IDX} in place of
* actual numbers to index into the array.
*/
@Idempotent
public long[] getStats() throws IOException;
/**
@ -565,6 +576,7 @@ public interface ClientProtocol extends VersionedProtocol {
* Return live datanodes if type is LIVE; dead datanodes if type is DEAD;
* otherwise all datanodes if type is ALL.
*/
@Idempotent
public DatanodeInfo[] getDatanodeReport(HdfsConstants.DatanodeReportType type)
throws IOException;
@ -575,6 +587,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws IOException
* @throws UnresolvedLinkException if the path contains a symlink.
*/
@Idempotent
public long getPreferredBlockSize(String filename)
throws IOException, UnresolvedLinkException;
@ -667,6 +680,7 @@ public interface ClientProtocol extends VersionedProtocol {
*
* @throws IOException
*/
//TODO(HA): Should this be @Idempotent?
public void finalizeUpgrade() throws IOException;
/**
@ -677,6 +691,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws IOException
*/
@Nullable
//TODO(HA): Should this be @Idempotent?
public UpgradeStatusReport distributedUpgradeProgress(UpgradeAction action)
throws IOException;
@ -690,9 +705,9 @@ public interface ClientProtocol extends VersionedProtocol {
* all corrupt files, call this method repeatedly and each time pass in the
* cookie returned from the previous call.
*/
public CorruptFileBlocks
listCorruptFileBlocks(String path, String cookie)
throws IOException;
@Idempotent
public CorruptFileBlocks listCorruptFileBlocks(String path, String cookie)
throws IOException;
/**
* Dumps namenode data structures into specified file. If the file
@ -709,6 +724,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @param bandwidth Blanacer bandwidth in bytes per second for this datanode.
* @throws IOException
*/
//TODO(HA): Should this be @Idempotent?
public void setBalancerBandwidth(long bandwidth) throws IOException;
/**
@ -739,6 +755,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException if <code>src</code> contains a symlink
* @throws IOException If an I/O error occurred
*/
@Idempotent
public HdfsFileStatus getFileLinkInfo(String src)
throws AccessControlException, UnresolvedLinkException, IOException;
@ -751,6 +768,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException if <code>path</code> contains a symlink.
* @throws IOException If an I/O error occurred
*/
@Idempotent
public ContentSummary getContentSummary(String path)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException;
@ -776,6 +794,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException if the <code>path</code> contains a symlink.
* @throws IOException If an I/O error occurred
*/
@Idempotent
public void setQuota(String path, long namespaceQuota, long diskspaceQuota)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException;
@ -791,6 +810,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException if <code>src</code> contains a symlink.
* @throws IOException If an I/O error occurred
*/
@Idempotent
public void fsync(String src, String client)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException;
@ -810,6 +830,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws UnresolvedLinkException if <code>src</code> contains a symlink.
* @throws IOException If an I/O error occurred
*/
@Idempotent
public void setTimes(String src, long mtime, long atime)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException;
@ -848,6 +869,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @throws FileNotFoundException If <code>path</code> does not exist
* @throws IOException If an I/O error occurred
*/
@Idempotent
public String getLinkTarget(String path) throws AccessControlException,
FileNotFoundException, IOException;
@ -863,6 +885,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @return a located block with a new generation stamp and an access token
* @throws IOException if any error occurs
*/
@Idempotent
public LocatedBlock updateBlockForPipeline(ExtendedBlock block,
String clientName) throws IOException;
@ -886,6 +909,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @return Token<DelegationTokenIdentifier>
* @throws IOException
*/
@Idempotent
public Token<DelegationTokenIdentifier> getDelegationToken(Text renewer)
throws IOException;
@ -896,6 +920,7 @@ public interface ClientProtocol extends VersionedProtocol {
* @return the new expiration time
* @throws IOException
*/
@Idempotent
public long renewDelegationToken(Token<DelegationTokenIdentifier> token)
throws IOException;