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[HDFS-5558] LeaseManager monitor thread can crash if the last block is complete but another block is not. - HDFS - [issue]
...As mentioned in HDFS-5557, if a file has its last and penultimate block not completed and the file is being closed, the last block may be completed but the penultimate one might not. If this...
http://issues.apache.org/jira/browse/HDFS-5558    Author: Kihwal Lee, 2014-11-19, 23:16
[HDFS-7394] Log at INFO level, not WARN level, when InvalidToken is seen in ShortCircuitCache - HDFS - [issue]
...For long running clients, getting an InvalidToken exception is expected and the client refetches a block token when it happens.  The related events are logged at INFO except the ones in...
http://issues.apache.org/jira/browse/HDFS-7394    Author: Kihwal Lee, 2014-11-17, 15:25
[HDFS-7304] TestFileCreation#testOverwriteOpenForWrite hangs - HDFS - [issue]
...The test case times out. It has been observed in multiple pre-commit builds....
http://issues.apache.org/jira/browse/HDFS-7304    Author: Kihwal Lee, 2014-11-12, 05:23
[HDFS-7217] Better batching of IBRs - HDFS - [issue]
...After HDFS-2691 (pipeline recovery in HA), the number of IBR(incremental block report)s have doubled.  Since processing of IBR requires exclusive FSNamesystem write lock, this can be a ...
http://issues.apache.org/jira/browse/HDFS-7217    Author: Kihwal Lee, 2014-11-07, 07:20
[HDFS-7300] The getMaxNodesPerRack() method in BlockPlacementPolicyDefault is flawed - HDFS - [issue]
...The getMaxNodesPerRack() can produce an undesirable result in some cases. Three replicas on two racks. The max is 3, so everything can go to one rack. Two replicas on two or more racks. The ...
http://issues.apache.org/jira/browse/HDFS-7300    Author: Kihwal Lee, 2014-10-30, 15:17
[HDFS-6088] Add configurable maximum block count for datanode - HDFS - [issue]
...Currently datanode resources are protected by the free space check and the balancer.  But datanodes can run out of memory simply storing too many blocks. If the sizes of blocks are smal...
http://issues.apache.org/jira/browse/HDFS-6088    Author: Kihwal Lee, 2014-10-29, 15:09
[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, 2014-10-29, 14:19
[HDFS-6888] Remove audit logging of getFIleInfo() - HDFS - [issue]
...The audit logging of getFileInfo() was added in HDFS-3733.  Since this is a one of the most called method, users have noticed that audit log is now filled with this.  Since we now ...
http://issues.apache.org/jira/browse/HDFS-6888    Author: Kihwal Lee, 2014-10-23, 01:41
[HDFS-5962] Mtime and atime are not persisted for symbolic links - HDFS - [issue]
...In FSImageSerialization, the mtime and atime of symbolic links are hardcoded to be 0 when saving to fsimage, even though they are recorded in memory and shown in the listing until restarting...
http://issues.apache.org/jira/browse/HDFS-5962    Author: Kihwal Lee, 2014-09-04, 02:15
[HDFS-5961] OIV cannot load fsimages containing a symbolic link - HDFS - [issue]
...In ImageLoaderCurrent#processINode, the permission is not read for symlink INodes. So after incorrectly reading in the first symbolic link , the next INode can't be read.HDFS-4850 broke this...
http://issues.apache.org/jira/browse/HDFS-5961    Author: Kihwal Lee, 2014-09-04, 02:15
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NEW: Monitor These Apps!
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