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
parent
180646dea3
commit
efb2d93f77
@ -17,3 +17,5 @@ HDFS-2301. Start/stop appropriate namenode services when transition to active an
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HDFS-2231. Configuration changes for HA namenode. (suresh)
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HDFS-2418. Change ConfiguredFailoverProxyProvider to take advantage of HDFS-2231. (atm)
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HDFS-2393. Mark appropriate methods of ClientProtocol with the idempotent annotation. (atm)
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@ -112,6 +112,7 @@ public LocatedBlocks getBlockLocations(String src,
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* @return a set of server default configuration values
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* @throws IOException
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*/
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@Idempotent
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public FsServerDefaults getServerDefaults() throws IOException;
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/**
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@ -215,6 +216,7 @@ public LocatedBlock append(String src, String clientName)
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* @throws UnresolvedLinkException if <code>src</code> contains a symlink
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public boolean setReplication(String src, short replication)
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throws AccessControlException, DSQuotaExceededException,
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FileNotFoundException, SafeModeException, UnresolvedLinkException,
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@ -229,6 +231,7 @@ public boolean setReplication(String src, short replication)
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* @throws UnresolvedLinkException If <code>src</code> contains a symlink
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public void setPermission(String src, FsPermission permission)
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throws AccessControlException, FileNotFoundException, SafeModeException,
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UnresolvedLinkException, IOException;
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@ -246,6 +249,7 @@ public void setPermission(String src, FsPermission permission)
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* @throws UnresolvedLinkException If <code>src</code> contains a symlink
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public void setOwner(String src, String username, String groupname)
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throws AccessControlException, FileNotFoundException, SafeModeException,
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UnresolvedLinkException, IOException;
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@ -318,6 +322,7 @@ public LocatedBlock addBlock(String src, String clientName,
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* @throws UnresolvedLinkException If <code>src</code> contains a symlink
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public LocatedBlock getAdditionalDatanode(final String src, final ExtendedBlock blk,
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final DatanodeInfo[] existings, final DatanodeInfo[] excludes,
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final int numAdditionalNodes, final String clientName
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@ -355,6 +360,7 @@ public boolean complete(String src, String clientName, ExtendedBlock last)
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* locations on datanodes).
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* @param blocks Array of located blocks to report
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*/
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@Idempotent
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public void reportBadBlocks(LocatedBlock[] blocks) throws IOException;
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///////////////////////////////////////
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@ -472,6 +478,7 @@ public boolean delete(String src, boolean recursive)
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* RunTimeExceptions:
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* @throws InvalidPathException If <code>src</code> is invalid
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*/
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@Idempotent
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public boolean mkdirs(String src, FsPermission masked, boolean createParent)
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throws AccessControlException, FileAlreadyExistsException,
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FileNotFoundException, NSQuotaExceededException,
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@ -492,6 +499,7 @@ public boolean mkdirs(String src, FsPermission masked, boolean createParent)
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* @throws UnresolvedLinkException If <code>src</code> contains a symlink
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public DirectoryListing getListing(String src,
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byte[] startAfter,
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boolean needLocation)
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@ -521,6 +529,7 @@ public DirectoryListing getListing(String src,
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* @throws AccessControlException permission denied
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public void renewLease(String clientName) throws AccessControlException,
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IOException;
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@ -533,6 +542,7 @@ public void renewLease(String clientName) throws AccessControlException,
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* @return true if the file is already closed
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* @throws IOException
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*/
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@Idempotent
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public boolean recoverLease(String src, String clientName) throws IOException;
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public int GET_STATS_CAPACITY_IDX = 0;
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@ -544,7 +554,7 @@ public void renewLease(String clientName) throws AccessControlException,
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/**
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* Get a set of statistics about the filesystem.
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* Right now, only three values are returned.
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* Right now, only seven values are returned.
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* <ul>
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* <li> [0] contains the total storage capacity of the system, in bytes.</li>
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* <li> [1] contains the total used space of the system, in bytes.</li>
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@ -557,6 +567,7 @@ public void renewLease(String clientName) throws AccessControlException,
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* Use public constants like {@link #GET_STATS_CAPACITY_IDX} in place of
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* actual numbers to index into the array.
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*/
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@Idempotent
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public long[] getStats() throws IOException;
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/**
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@ -565,6 +576,7 @@ public void renewLease(String clientName) throws AccessControlException,
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* Return live datanodes if type is LIVE; dead datanodes if type is DEAD;
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* otherwise all datanodes if type is ALL.
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*/
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@Idempotent
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public DatanodeInfo[] getDatanodeReport(HdfsConstants.DatanodeReportType type)
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throws IOException;
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@ -575,6 +587,7 @@ public DatanodeInfo[] getDatanodeReport(HdfsConstants.DatanodeReportType type)
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* @throws IOException
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* @throws UnresolvedLinkException if the path contains a symlink.
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*/
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@Idempotent
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public long getPreferredBlockSize(String filename)
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throws IOException, UnresolvedLinkException;
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@ -667,6 +680,7 @@ public boolean setSafeMode(HdfsConstants.SafeModeAction action)
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*
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* @throws IOException
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*/
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//TODO(HA): Should this be @Idempotent?
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public void finalizeUpgrade() throws IOException;
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/**
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@ -677,6 +691,7 @@ public boolean setSafeMode(HdfsConstants.SafeModeAction action)
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* @throws IOException
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*/
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@Nullable
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//TODO(HA): Should this be @Idempotent?
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public UpgradeStatusReport distributedUpgradeProgress(UpgradeAction action)
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throws IOException;
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@ -690,9 +705,9 @@ public UpgradeStatusReport distributedUpgradeProgress(UpgradeAction action)
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* all corrupt files, call this method repeatedly and each time pass in the
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* cookie returned from the previous call.
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*/
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public CorruptFileBlocks
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listCorruptFileBlocks(String path, String cookie)
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throws IOException;
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@Idempotent
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public CorruptFileBlocks listCorruptFileBlocks(String path, String cookie)
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throws IOException;
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/**
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* Dumps namenode data structures into specified file. If the file
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@ -709,6 +724,7 @@ public UpgradeStatusReport distributedUpgradeProgress(UpgradeAction action)
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* @param bandwidth Blanacer bandwidth in bytes per second for this datanode.
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* @throws IOException
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*/
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//TODO(HA): Should this be @Idempotent?
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public void setBalancerBandwidth(long bandwidth) throws IOException;
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/**
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@ -739,6 +755,7 @@ public HdfsFileStatus getFileInfo(String src) throws AccessControlException,
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* @throws UnresolvedLinkException if <code>src</code> contains a symlink
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public HdfsFileStatus getFileLinkInfo(String src)
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throws AccessControlException, UnresolvedLinkException, IOException;
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@ -751,6 +768,7 @@ public HdfsFileStatus getFileLinkInfo(String src)
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* @throws UnresolvedLinkException if <code>path</code> contains a symlink.
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public ContentSummary getContentSummary(String path)
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throws AccessControlException, FileNotFoundException,
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UnresolvedLinkException, IOException;
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@ -776,6 +794,7 @@ public ContentSummary getContentSummary(String path)
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* @throws UnresolvedLinkException if the <code>path</code> contains a symlink.
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public void setQuota(String path, long namespaceQuota, long diskspaceQuota)
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throws AccessControlException, FileNotFoundException,
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UnresolvedLinkException, IOException;
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@ -791,6 +810,7 @@ public void setQuota(String path, long namespaceQuota, long diskspaceQuota)
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* @throws UnresolvedLinkException if <code>src</code> contains a symlink.
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public void fsync(String src, String client)
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throws AccessControlException, FileNotFoundException,
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UnresolvedLinkException, IOException;
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@ -810,6 +830,7 @@ public void fsync(String src, String client)
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* @throws UnresolvedLinkException if <code>src</code> contains a symlink.
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public void setTimes(String src, long mtime, long atime)
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throws AccessControlException, FileNotFoundException,
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UnresolvedLinkException, IOException;
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@ -848,6 +869,7 @@ public void createSymlink(String target, String link, FsPermission dirPerm,
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* @throws FileNotFoundException If <code>path</code> does not exist
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* @throws IOException If an I/O error occurred
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*/
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@Idempotent
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public String getLinkTarget(String path) throws AccessControlException,
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FileNotFoundException, IOException;
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@ -863,6 +885,7 @@ public String getLinkTarget(String path) throws AccessControlException,
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* @return a located block with a new generation stamp and an access token
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* @throws IOException if any error occurs
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*/
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@Idempotent
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public LocatedBlock updateBlockForPipeline(ExtendedBlock block,
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String clientName) throws IOException;
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@ -886,6 +909,7 @@ public void updatePipeline(String clientName, ExtendedBlock oldBlock,
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* @return Token<DelegationTokenIdentifier>
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* @throws IOException
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*/
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@Idempotent
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public Token<DelegationTokenIdentifier> getDelegationToken(Text renewer)
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throws IOException;
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@ -896,6 +920,7 @@ public Token<DelegationTokenIdentifier> getDelegationToken(Text renewer)
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* @return the new expiration time
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* @throws IOException
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*/
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@Idempotent
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public long renewDelegationToken(Token<DelegationTokenIdentifier> token)
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throws IOException;
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