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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-5723] Append failed FINALIZED replica should not be accepted as valid when that block is underconstruction - HDFS - [issue]
...Scenario:1. 3 node cluster with dfs.client.block.write.replace-datanode-on-failure.enable set to false.2. One file is written with 3 replicas, blk_id_gs13. One of the datanode DN1 is down.4....
http://issues.apache.org/jira/browse/HDFS-5723    Author: Vinayakumar B, 2014-06-10, 07:13
[HDFS-6147] New blocks scanning will be delayed due to issue in BlockPoolSliceScanner#updateBytesToScan(..) - HDFS - [issue]
...New blocks scanning will be delayed if old blocks deleted after datanode restart.Steps:1. Write some blocks and wait till all scans over2. Restart the datanode3. Delete some of the blocks4. ...
http://issues.apache.org/jira/browse/HDFS-6147    Author: Vinayakumar B, 2014-05-21, 07:27
[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-5728] [Diskfull] Block recovery will fail if the metafile does not have crc for all chunks of the block - HDFS - [issue]
...1. Client (regionsever) has opened stream to write its WAL to HDFS. This is not one time upload, data will be written slowly.2. One of the DataNode got diskfull ( due to some other data fill...
http://issues.apache.org/jira/browse/HDFS-5728    Author: Vinayakumar B, 2014-04-04, 20:36
[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
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