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HADOOP-2649. The NameNode periodically computes replication work for

the datanodes. The periodicity of this computation is now configurable.

(dhruba)

HADOOP-290. A DataNode log message now prints the target of a replication

request correctly. (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-2614. Accesses from the HDFS WebUI are configured to be from the

user specified by dfs.web.ugi. (Tsz Wo (Nicholas), SZE 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-2012. Periodic data verification on Datanodes.

(Raghu Angadi via dhruba)

HADOOP-2012. Periodic data verification on Datanodes.

(Raghu Angadi via dhruba)

HADOOP-2481. NNBench report its progress periodically.

(Hairong Kuang via dhruba)

HADOOP-2398. Additional instrumentation for NameNode and RPC server.

Add support for accessing instrumentation statistics via JMX.

(Sanjay radia via dhruba)

  1. … 8 more files in changeset.
HADOOP-2540. fsck reports missing blocks incorrectly. (dhruba)

svn merge -c 611385 from trunk.

HADOOP-2540. fsck reports missing blocks incorrectly. (dhruba)

HADOOP-2562. globPaths supports {ab,cd}. (Hairong Kuang via dhruba)

svn merge -c 611264 from trunk.

HADOOP-2562. globPaths supports {ab,cd}. (Hairong Kuang via dhruba)

HADOOP-2447. HDFS can be configured to limit the total number of

objects (inodes and blocks) in the file system. (dhruba)

HADOOP-2110. Block report processing creates fewer transient objects.

Datanode Protocol version changed from 10 to 11.

(Sanjay Radia via dhruba)

HADOOP-2492. Additional debugging in the rpc server to better

diagnose ConcurrentModificationException. (dhruba)

HADOOP-2476. Unit test failure while reading permission bits of local

file system (on Windows) fixed. (Raghu Angadi via dhruba)

HADOOP-2432. HDFS includes the name of the file while throwing

"File does not exist" exception. (Jim Kellerman via dhruba)

HADOOP-2326. The initial block report at Datanode startup time has

a random backoff period. (Sanjay Radia 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-2460. When the namenode encounters ioerrors on writing a

transaction log, it stops writing new transactions to that one.

(Raghu Angadi via dhruba)

HADOOP-2434. FSDatasetInterface read interface causes HDFS reads to occur

in 1 byte chunks, causing performance degradation.

(Raghu Angadi via dhruba)

HADOOP-2422. dfs -cat multiple files fail with 'Unable to write to

output stream'. (Raghu Angadi via dhruba)

svn merge -c 605220 from trunk.

HADOOP-2422. dfs -cat multiple files fail with 'Unable to write to

output stream'. (Raghu Angadi via dhruba)

HADOOP-2381. Support permission information in FileStatus. Client

Protocol version changed from 21 to 22. (Raghu Angadi via dhruba)

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)

svn merge -c 603000 from trunk.

    • ?
    /hadoop/branches/branch-0.15/src/c++/libhdfs/hdfs.c
Modified CHANGES.txt to indicate that HADOOP-2158 is part of the

0.15.2 release.

HADOOP-1841. Prevent slow clients from consuming threads in the NameNode.

(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-2000. Rewrite NNBench to measure namenode performance accurately.

It now uses the map-reduce framework for load generation.

(Mukund Madhugiri via dhruba)