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[HDFS-8096] DatanodeMetrics#blocksReplicated will get incremented early and even for failed transfers - HDFS - [issue]
...    case DatanodeProtocol.DNA_TRANSFER:      // Send a copy of a block to another datanode      dn.transferBlocks(bcmd.getBlockPoolId()...
http://issues.apache.org/jira/browse/HDFS-8096    Author: Vinayakumar B, 2015-04-09, 12:56
[HDFS-7688] Client side api/config changes to support online encoding - HDFS - [issue]
...This Jira targets to handle Client side API changes to support directly erasure encoding with striped blocks from the client side...
http://issues.apache.org/jira/browse/HDFS-7688    Author: Vinayakumar B, 2015-04-01, 20:27
[HDFS-7691] Handle hflush and hsync in the best optimal way possible during online Erasure encoding - HDFS - [issue]
...as mentioned in design doc, hsync and hflush tends to make the online erasure encoding complex.But these are critical features to ensure fault tolerance for some users.These operations shoul...
http://issues.apache.org/jira/browse/HDFS-7691    Author: Vinayakumar B, 2015-03-31, 21:17
[HDFS-8027] Erasure Coding: Update CHANGES-HDFS-7285.txt with branch commits - HDFS - [issue]
...Latest branch commits are not tracked in CHANGES-HDFS-7285.txt....
http://issues.apache.org/jira/browse/HDFS-8027    Author: Vinayakumar B, 2015-03-31, 17:23
Re: Why DFSClient in HA-cluster tries to resolve HA cluster name? - HDFS - [mail # dev]
...Thats a good find Dmitry Simonov.Even in DFSAdmin, everywhere its used just to print to console.You can raise a jira and post a patch to refactor this.-VinayOn Tue, Mar 31, 2015 at 12:34 PM,...
   Author: Vinayakumar B, 2015-03-31, 10:10
[HDFS-7689] Add periodic checker to find the corrupted EC blocks/files - HDFS - [issue]
...Periodic checker similar to ReplicationMonitor to monitor the EC files/blocks for the corruption/missing and schedule for the recovery/correction...
http://issues.apache.org/jira/browse/HDFS-7689    Author: Vinayakumar B, 2015-03-28, 00:25
[HDFS-7410] Support CreateFlags with append() to support hsync() for appending streams - HDFS - [issue]
...Current FileSystem APIs include CreateFlag only for the create() api, and some of these (SYNC_BLOCK) are for only client side and will not be stored in metadata of the file. So append() oper...
http://issues.apache.org/jira/browse/HDFS-7410    Author: Vinayakumar B, 2015-03-27, 15:15
[expand - 5 more] - Re: upstream jenkins build broken? - HDFS - [mail # dev]
...This problems seems to be gone atleast for now.Have made a temp ( as of now) commit to restore the execute permissions forhadoop-hdfs/target/test/data directory.Problem was often seen on H9 ...
   Author: Vinayakumar B, 2015-03-18, 02:22
[HDFS-5903] FSVolumeList#initializeReplicaMaps(..) not doing anything, it can be removed - HDFS - [issue]
...  void initializeReplicaMaps(ReplicaMap globalReplicaMap) throws IOException {    for (FsVolumeImpl v : volumes) {      v.getVolumeMap(globalRepl...
http://issues.apache.org/jira/browse/HDFS-5903    Author: Vinayakumar B, 2015-03-09, 08:48
[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, 2015-03-09, 08:42
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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