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HDFS-1970
Null pointer exception comes when Namenode recovery happens and there is no response from client to NN more than the hardlimit for NN recovery and the current block is more than the prev block size in NN
Block information displayed in UI is incorrect
After NameNode restart , Clients can not read partial files even after client invokes Sync.HDFS-1555
HDFS 20 append: Disallow pipeline recovery if a file is already being lease recovered
Append 0.20: New semantics for recoverLeaseHDFS-1520
HDFS 20 append: Lightweight NameNode operation to trigger lease recovery
DFSClient receives out of order packet ackHDFS-1266
Missing license headers in branch-20-append
0.20: OOME in HDFS client made an unrecoverable HDFS block
0.20: in tryUpdateBlock, the meta file is renamed away before genstamp validation is done
Clearing namespace quota on "/" corrupts FS image
0.20: mark dfs.support.append to be true by default for the 0.20-append branch
Misc cleanup/logging improvements for branch-20-append
HDFS-1246
Manual tool to test sync against a real cluster- HDFS-1243
0.20 append: Replication tests in TestFileAppend4 should not expect immediate replication
TestDFSShell failing in branch-20
Update to JUnit 4 in branch 20 append
TestNodeCount infinite loops on branch-20-append
0.20 append: Block receiver should not log "rewind" packets at INFO level
DFSClient should log exception when block recovery fails
0.20-append: stallReplicationWork should be volatile
0.20: Lease expiration should recover single files, not entire lease holder
DataBlockScanner throws NPE when updated before initialized
Blocks are considered "complete" prematurely after commitBlockSynchronization or DN restart
completeFile does not check lease ownership
DFSOutputStream socket leak when cannot connect to DataNodeHDFS-1057
Concurrent readers hit ChecksumExceptions if following a writer to very end of file
Multi-node RPC deadlocks during block recovery
Remove unnecessary sleep after failure in nextBlockOutputStream
saveNamespace race can corrupt the edits log
Allow hflush/sync to occur in parallel with new writes to the file
Allow a mechanism for an application to detect that datanode(s) have died in the write pipeline
Pipeline close hangs if one of the datanode is not responsive.
In DFSOutputStream.nextBlockOutputStream(), the client can exclude specific datanodes when locating the next block.
ConcurrentModificationException in invalidateCorruptReplicas()
Fix write pipeline READ_TIMEOUT
pread() fails when cached block locations are no longer valid
In HDFS, sync() not yet guarantees data available to the new readers
In 0.20, move blocks being written into a blocksBeingWritten directory
DFS write pipeline : DFSClient sometimes does not detect second datanode failure