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[HDFS-6545] Finalizing rolling upgrade can make NN unavailable for a long duration - HDFS - [issue]
...In FSNamesystem#finalizeRollingUpgrade(), saveNamespace() is directly called.  For name nodes with a big name space, it can take minutes to save a new fsimage....
http://issues.apache.org/jira/browse/HDFS-6545    Author: Kihwal Lee, 2014-06-18, 16:18
[HDFS-6349] Bound checks missing in FSEditLogOp.AclEditLogUtil - HDFS - [issue]
...AclEditLogUtil.read() can throw OutOfMemoryException when it encounters a certain corrupt entry. This is because it reads the size and blindly tries to allocate an ArrayList of that size.Bec...
http://issues.apache.org/jira/browse/HDFS-6349    Author: Kihwal Lee, 2014-06-10, 19:30
[HDFS-6449] Incorrect counting in ContentSummaryComputationContext in 0.23. - HDFS - [issue]
...In ContentSummaryComputationContext, the content counting in yield() is incorrect. The result is still correct, but it ends up yielding more frequently.  Trunk and branch-2 does not hav...
http://issues.apache.org/jira/browse/HDFS-6449    Author: Kihwal Lee, 2014-05-27, 19:01
[HDFS-6360] MiniDFSCluster can cause unexpected side effects due to sharing of config - HDFS - [issue]
...As noted in HDFS-6329 and HDFS-5522, certain use cases of MiniDFSCluster can result in unexpected results and falsely failing or passing unit tests.Since a Configuration object is shared for...
http://issues.apache.org/jira/browse/HDFS-6360    Author: Kihwal Lee, 2014-05-16, 02:36
[HDFS-6384] Provide an alternative offline file system analysis tool - HDFS - [issue]
...Per discussion in HDFS-6293, we need an alternative way of analyzing file system offline.  Some use cases can be covered by post-processing the new PB-based fsimage without consuming mu...
http://issues.apache.org/jira/browse/HDFS-6384    Author: Kihwal Lee, 2014-05-13, 17:01
[HDFS-6191] Disable quota checks when replaying edit log. - HDFS - [issue]
...Since the serving NN does quota checks before logging edits, performing quota checks is unnecessary while replaying edits. I propose disabling quota checks for 2NN and SBN....
http://issues.apache.org/jira/browse/HDFS-6191    Author: Kihwal Lee, 2014-04-16, 15:08
[HDFS-5983] TestSafeMode#testInitializeReplQueuesEarly fails - HDFS - [issue]
...It was seen from one of the precommit build of HDFS-5962.  The test case creates 15 blocks and then shuts down all datanodes. Then the namenode is restarted with a low safe block thresh...
http://issues.apache.org/jira/browse/HDFS-5983    Author: Kihwal Lee, 2014-04-09, 20:32
[HDFS-4861] BlockPlacementPolicyDefault does not consider decommissioning racks - HDFS - [issue]
...getMaxNodesPerRack() calculates the max replicas/rack like this:int maxNodesPerRack = (totalNumOfReplicas-1)/clusterMap.getNumOfRacks()+2;Since this does not consider the racks that are bein...
http://issues.apache.org/jira/browse/HDFS-4861    Author: Kihwal Lee, 2014-04-05, 03:17
[HDFS-5870] The legacy local reader stops working on block token expiration - HDFS - [issue]
...HDFS-5637 fixed the issue for 2.0, but after the new domain socket based local reader, the fix won't work for the old "legacy" short-circuit local reader. This is because DFSInputStream#getB...
http://issues.apache.org/jira/browse/HDFS-5870    Author: Kihwal Lee, 2014-04-03, 22:43
[HDFS-6148] LeaseManager crashes while initiating block recovery - HDFS - [issue]
...While running branch-2.4, the LeaseManager crashed with an NPE. This does not always happen on block recovery.Exception in thread"org.apache.hadoop.hdfs.server.namenode.LeaseManager$Monitor@...
http://issues.apache.org/jira/browse/HDFS-6148    Author: Kihwal Lee, 2014-03-25, 17:58
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