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[HDFS-7853] Erasure coding: extend LocatedBlocks to support reading from striped files - HDFS - [issue]
...We should extend LocatedBlocks class so getBlockLocations can work with striping layout (possibly an extra list specifying the index of each location in the group)...
http://issues.apache.org/jira/browse/HDFS-7853    Author: Zhe Zhang, 2015-03-18, 22:29
[HDFS-7608] hdfs dfsclient  newConnectedPeer has no write timeout - HDFS - [issue]
...problem:hbase compactSplitThread may lock forever on  read datanode blocks.debug found:  epollwait timeout set to 0,so epollwait can not  run out.cause: in hdfs 2.3.0hbase usi...
http://issues.apache.org/jira/browse/HDFS-7608    Author: zhangshilong, 2015-03-18, 21:11
[HDFS-7433] Optimize performance of DatanodeManager's node map - HDFS - [issue]
...The datanode map is currently a TreeMap.  For many thousands of datanodes, tree lookups are ~10X more expensive than a HashMap.  Insertions and removals are up to 100X more expensi...
http://issues.apache.org/jira/browse/HDFS-7433    Author: Daryn Sharp, 2015-03-18, 18:07
[HDFS-7934] During Rolling upgrade rollback ,standby namenode startup fails. - HDFS - [issue]
...During Rolling upgrade rollback , standby namenode startup fails , while loading edits and when  there is no local copy of edits created after upgrade ( which is already been removed &n...
http://issues.apache.org/jira/browse/HDFS-7934    Author: J.Andreina, 2015-03-18, 16:15
[HDFS-7940] Add tracing to DFSClient#setQuotaByStorageType - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-7940    Author: Rakesh R, 2015-03-18, 15:31
[HDFS-7946] TestDataNodeVolumeFailureReporting NPE on Windows - HDFS - [issue]
...TestDataNodeVolumeFailureReporting has a pre-test setUp that assumeTrue(!Path.WINDOWS) but the post-test tearDown() does not. This triggers NPE when closing cluster.testSuccessiveVolumeFailu...
http://issues.apache.org/jira/browse/HDFS-7946    Author: Xiaoyu Yao, 2015-03-18, 15:31
[HDFS-7261] storageMap is accessed without synchronization in DatanodeDescriptor#updateHeartbeatState() - HDFS - [issue]
...Here is the code:      failedStorageInfos = new HashSet<DatanodeStorageInfo>(          storageMap.values());In other places, the lock ...
http://issues.apache.org/jira/browse/HDFS-7261    Author: Ted Yu, 2015-03-18, 13:24
[HDFS-7952] On starting Standby with "rollback" option, lastPromisedEpoch gets updated and Active Namenode is shutting down. - HDFS - [issue]
...Step 1: Start NN1 as active , NN2 as standby .Step 2: Perform "hdfs dfsadmin -rollingUpgrade prepare"Step 3: Start NN2 active and NN1 as standby with rolling upgrade started option.Step 4: D...
http://issues.apache.org/jira/browse/HDFS-7952    Author: J.Andreina, 2015-03-18, 12:33
[HDFS-7661] Support read when a EC file is being written - HDFS - [issue]
...We also need to support hflush/hsync and visible length....
http://issues.apache.org/jira/browse/HDFS-7661    Author: Tsz Wo Nicholas Sze, 2015-03-18, 06:18
[HDFS-7792] Add links to FaultInjectFramework and SLGUserGuide to site index - HDFS - [issue]
...FaultInjectFramework.html SLGUserGuide.html are not linked from anywhere. Add link to them to site.xml if the contents are not outdated....
http://issues.apache.org/jira/browse/HDFS-7792    Author: Masatake Iwasaki, 2015-03-18, 05:18
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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