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[HDFS-6293] Issues with OIV processing PB-based fsimages - HDFS - [issue]
...There are issues with OIV when processing fsimages in protobuf. Due to the internal layout changes introduced by the protobuf-based fsimage, OIV consumes excessive amount of memory.  We...
http://issues.apache.org/jira/browse/HDFS-6293    Author: Kihwal Lee, 2014-08-20, 14:28
[HDFS-6663] Admin command to track file and locations from block id - HDFS - [issue]
...A dfsadmin command that allows finding out the file and the locations given a block number will be very useful in debugging production issues.   It may be possible to add this feature t...
http://issues.apache.org/jira/browse/HDFS-6663    Author: Kihwal Lee, 2014-08-18, 16:03
[HDFS-6334] Client failover proxy provider for IP failover based NN HA - HDFS - [issue]
...With RPCv9 and improvements in the SPNEGO auth handling, it is possible to set up a pair of HA namenodes utilizing IP failover as client-request fencing mechanism.This jira will make it poss...
http://issues.apache.org/jira/browse/HDFS-6334    Author: Kihwal Lee, 2014-08-15, 06:41
[HDFS-6250] TestBalancerWithNodeGroup.testBalancerWithRackLocality fails - HDFS - [issue]
...It was seen in https://builds.apache.org/job/PreCommit-HDFS-Build/6669/java.lang.AssertionError: expected:<1800> but was:<1810> at org.junit.Assert.fail(Assert.java:93) at org.ju...
http://issues.apache.org/jira/browse/HDFS-6250    Author: Kihwal Lee, 2014-08-15, 06:41
[HDFS-6016] Update datanode replacement policy to make writes more robust - HDFS - [issue]
...As discussed in HDFS-5924, writers that are down to only one node due to node failures can suffer if a DN does not restart in time. We do not worry about writes that began with single replic...
http://issues.apache.org/jira/browse/HDFS-6016    Author: Kihwal Lee, 2014-08-13, 16:45
Re: [VOTE] Migration from subversion to git for version control - HDFS - [mail # dev]
...+1 (binding)KihwalOn 8/8/14, 9:57 PM, "Karthik Kambatla"  wrote: ...
   Author: Kihwal Lee, 2014-08-11, 20:44
[HDFS-6651] Deletion failure can leak inodes permanently. - HDFS - [issue]
...As discussed in HDFS-6618, if a deletion of tree fails in the middle, any collected inodes and blocks will not be removed from INodeMap and BlocksMap. Since fsimage is saved by iterating ove...
http://issues.apache.org/jira/browse/HDFS-6651    Author: Kihwal Lee, 2014-07-29, 02:50
[HDFS-6696] Name node cannot start if the path of a file under construction contains ".snapshot" - HDFS - [issue]
...Using -renameReserved to rename ".snapshot" in a pre-hdfs-snapshot feature fsimage during upgrade only works, if there is nothing under construction under the renamed directory.  I am n...
http://issues.apache.org/jira/browse/HDFS-6696    Author: Kihwal Lee, 2014-07-25, 00:45
[HDFS-6599] 2.4 addBlock is 10 to 20 times slower compared to 0.23 - HDFS - [issue]
...From one of our busiest 0.23 clusters:"AddBlockAvgTime" : 0.9514711501719515"CreateAvgTime" : 1.7564162389174"CompleteAvgTime" : 1.3310406035056548"BlockReceivedAndDeletedAvgTime" : 0.661210...
http://issues.apache.org/jira/browse/HDFS-6599    Author: Kihwal Lee, 2014-07-21, 06:42
[HDFS-5522] Datanode disk error check may be incorrectly skipped - HDFS - [issue]
...After HDFS-4581 and HDFS-4699, checkDiskError() is not called when network errors occur during processing data node requests.  This appears to create problems when a disk is having prob...
http://issues.apache.org/jira/browse/HDFS-5522    Author: Kihwal Lee, 2014-07-16, 08:56
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