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[HDFS-4075] Reduce recommissioning overhead - HDFS - [issue]
...When datanodes are recommissioned, {BlockManager#processOverReplicatedBlocksOnReCommission()} is called for each rejoined node and excess blocks are added to the invalidate list. The pr...
http://issues.apache.org/jira/browse/HDFS-4075    Author: Kihwal Lee, 2013-02-06, 17:05
[HDFS-4181] LeaseManager tries to double remove and prints extra messages - HDFS - [issue]
...When checkLeases() runs, internalReleaseLease() is called on the expired ones. When it returns true, the lease is already removed, yet it is tried again in checkLease(). This causes unnecess...
http://issues.apache.org/jira/browse/HDFS-4181    Author: Kihwal Lee, 2013-02-06, 17:05
[HDFS-4090] getFileChecksum() result incompatible when called against zero-byte files. - HDFS - [issue]
...When getFileChecksum() is called against a zero-byte file, the branch-1 client returns MD5MD5CRC32FileChecksum with crcPerBlock=0, bytePerCrc=0 and md5=70bc8f4b72a86921468bf8e8441dce51, wher...
http://issues.apache.org/jira/browse/HDFS-4090    Author: Kihwal Lee, 2013-02-06, 17:05
[HDFS-4191] Track new transactions per thread so that unnecessary logSync() calls can be avoided - HDFS - [issue]
...With this fix, logSync() can be called anytime by a thread without affecting the batched syncs metrics. As discussed in HDFS-4186, we will put this feature only to trunk first and let it soa...
http://issues.apache.org/jira/browse/HDFS-4191    Author: Kihwal Lee, 2012-12-12, 00:54
[HDFS-4254] testAllEditsDirsFailOnFlush makes subsequent test cases fail (0.23.6 only) - HDFS - [issue]
...This jira is about a broken test case in branch-0.23 only.After HDFS-4233, testAllEditsDirsFailOnFlush started making subsequent cases in the same file fail. This is because MiniDFSCluster w...
http://issues.apache.org/jira/browse/HDFS-4254    Author: Kihwal Lee, 2012-12-01, 12:42
[HDFS-4233] NN keeps serving even after no journals started while rolling edit - HDFS - [issue]
...We've seen namenode keeps serving even after rollEditLog() failure. Instead of taking a corrective action or regard this condition as FATAL, it keeps on serving and modifying its file system...
http://issues.apache.org/jira/browse/HDFS-4233    Author: Kihwal Lee, 2012-12-01, 00:14
[HDFS-4138] BackupNode startup fails due to uninitialized edit log - HDFS - [issue]
...It was notices by TestBackupNode.testCheckpointNode failure. When a backup node is getting started, it tries to enter active state and start common services. But when it fails to start servi...
http://issues.apache.org/jira/browse/HDFS-4138    Author: Kihwal Lee, 2012-11-09, 14:02
[HDFS-4136] libhdfs segfaults after recent changes - HDFS - [issue]
...After HDFS-3923, jvm segfaults during testing. It is also confising since it was committed as HDFS-3916 (see CHANGES.txt and commit log)....
http://issues.apache.org/jira/browse/HDFS-4136    Author: Kihwal Lee, 2012-11-06, 15:01
[HDFS-3453] HDFS does not use ClientProtocol in a backward-compatible way - HDFS - [issue]
...HDFS-617 was brought into branch-0.20-security/branch-1 to support non-recursive create, along with HADOOP-6840 and HADOOP-6886. However, the changes in HDFS was done in an incompatible way,...
http://issues.apache.org/jira/browse/HDFS-3453    Author: Kihwal Lee, 2012-10-17, 19:27
[HDFS-3922] 0.22 and 0.23 namenode throws away blocks under construction on restart - HDFS - [issue]
...When reading edits on startup, namenode may throw away blocks under construction. This is because the file inode is turned into a "under construction" one, but nothing is done to the last bl...
http://issues.apache.org/jira/browse/HDFS-3922    Author: Kihwal Lee, 2012-09-28, 13:40
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