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[HDFS-6568] Provide configurations to select mode of replication to Mirror cluster - HDFS - [issue]
...provide necessary configurations to allow admin to select the mode of data synchronization to mirror cluster....
http://issues.apache.org/jira/browse/HDFS-6568    Author: Vinayakumar B, 2014-06-23, 05:08
[HDFS-6513] Add MirrorJournalManager to transfer edits from primary cluster to Mirror cluster - HDFS - [issue]
...There is a need of separate JournalManager implementation to transfer the edits to mirror cluster in synchronous mode of data replication to mirror cluster.This Jira targets the implementati...
http://issues.apache.org/jira/browse/HDFS-6513    Author: Vinayakumar B, 2014-06-20, 09:46
[HDFS-3507] DFS#isInSafeMode needs to execute only on Active NameNode - HDFS - [issue]
...Currently DFS#isInSafeMode is not Checking for the NN state. It can be executed on any of the NNs.But HBase will use this API to check for the NN safemode before starting up its service.If f...
http://issues.apache.org/jira/browse/HDFS-3507    Author: Vinayakumar B, 2014-06-12, 10:03
[HDFS-6514] Add MirrorJournal ( server side implementation) to handle the journals from Primary cluster - HDFS - [issue]
...This targets the serverside implementation of handling journals sent by the primary cluster via MirrorJournalManager.This service will be launched in mirror cluster's active namenode. It rec...
http://issues.apache.org/jira/browse/HDFS-6514    Author: Vinayakumar B, 2014-06-12, 07:19
[HDFS-5669] Storage#tryLock() should check for null before logging successfull message - HDFS - [issue]
...In the following code in Storage#tryLock(), there is a possibility that file.getChannel().tryLock() returns null if the lock is acquired by some other process. In that case even though retur...
http://issues.apache.org/jira/browse/HDFS-5669    Author: Vinayakumar B, 2014-04-11, 16:00
[HDFS-6064] DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_DEFAULT is not updated with latest block report interval of 6 hrs - HDFS - [issue]
...DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_DEFAULT is not updated with latest block report interval of 6 hrswhere as hdfs-default.xml having value of 6hours...
http://issues.apache.org/jira/browse/HDFS-6064    Author: Vinayakumar B, 2014-04-10, 14:12
[HDFS-5014] BPOfferService#processCommandFromActor() synchronization on namenode RPC call delays IBR to Active NN, if Stanby NN is unstable - HDFS - [issue]
...In one of our cluster, following has happened which failed HDFS write.1. Standby NN was unstable and continously restarting due to some errors. But Active NN was stable.2. MR Job was writing...
http://issues.apache.org/jira/browse/HDFS-5014    Author: Vinayakumar B, 2014-04-02, 03:06
[HDFS-6115] flush() should be called for every append on block scan verification log - HDFS - [issue]
...RollingLogsImpl#out is  PrintWriter and it have the default buffersize of 8kB.So until the 8kB buffer is filled all scan verification entries will not be flushed, hence there will be ch...
http://issues.apache.org/jira/browse/HDFS-6115    Author: Vinayakumar B, 2014-03-27, 14:02
[HDFS-6111] Avoid duplicate entries in Block Scan verification logs - HDFS - [issue]
...Duplicate entries could be generated in datanode verification logs if the datanode gets shutdown during the rolling of scan verification logs.If this happens multiple times in huge cluster, ...
http://issues.apache.org/jira/browse/HDFS-6111    Author: Vinayakumar B, 2014-03-18, 20:51
[HDFS-6058] Fix TestHDFSCLI failures after HADOOP-8691 change - HDFS - [issue]
...HADOOP-8691 changed the ls command output.TestHDFSCLI needs to be updated after this change,Latest precommit builds are failing because of this.https://builds.apache.org/job/PreCommit-HDFS-B...
http://issues.apache.org/jira/browse/HDFS-6058    Author: Vinayakumar B, 2014-03-06, 17:57
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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