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[HDFS-5583] Make DN send an OOB Ack on shutdown before restarting - HDFS - [issue]
...Add an ability for data nodes to send an OOB response in order to indicate an upcoming upgrade-restart. Client should ignore the pipeline error from the node for a configured amount of time ...
http://issues.apache.org/jira/browse/HDFS-5583    Author: Kihwal Lee, 2014-06-27, 23:38
[HDFS-6602] PendingDeletionBlocks on SBN keeps increasing - HDFS - [issue]
...PendingDeletionBlocks is from BlockManager.invalidateBlocks.numBlocks(). Itmeans this data structure is populated, but IBR (incremental block reports) do not cause deleted blocks to be remov...
http://issues.apache.org/jira/browse/HDFS-6602    Author: Kihwal Lee, 2014-06-25, 21:21
[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-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
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB