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[HDFS-6300] Allows to run multiple balancer simultaneously - HDFS - [issue]
...Javadoc of "Balancer.java" says, it will not allow to run second balancer if the first one is in progress. But I've noticed multiple can run together and balancer.id implementation is not sa...
http://issues.apache.org/jira/browse/HDFS-6300    Author: Rakesh R, 2014-12-01, 02:40
DFS#close is waiting long time for AckedSeqno response.. - HDFS - [mail # dev]
...Hi,I could see the dfsclient#close is getting into timed_wait for long time and is not come out.When analyzing the issue, I could see that the dfsclient fails to communicate with the datanod...
   Author: Rakesh R, 2014-11-26, 06:00
[HDFS-3408] BKJM : Namenode format fails, if there is no BK root - HDFS - [issue]
...scenario:1) /ledgers/available zNode is not created in ZooKeeper.2) Apply NN formatting using : hadoop namenode -formatNamenode formatting has dependency with the BookKeeper client and is th...
http://issues.apache.org/jira/browse/HDFS-3408    Author: Rakesh R, 2014-09-04, 01:59
[HDFS-3423] BKJM: NN startup is failing, when tries to recoverUnfinalizedSegments() a bad inProgress_ ZNodes - HDFS - [issue]
...Say, the InProgress_000X node is corrupted due to not writing the data(version, ledgerId, firstTxId) to this inProgress_000X znode. Namenode startup has the logic to recover all the unfinali...
http://issues.apache.org/jira/browse/HDFS-3423    Author: Rakesh R, 2014-09-04, 01:59
[HDFS-6348] Secondary namenode -  RMI Thread prevents JVM from exiting after main() completes - HDFS - [issue]
...Secondary Namenode is not exiting when there is RuntimeException occurred during startup.Say I configured wrong configuration, due to that validation failed and thrown RuntimeException as sh...
http://issues.apache.org/jira/browse/HDFS-6348    Author: Rakesh R, 2014-05-07, 13:43
[HDFS-5832] Deadlock found in NN between SafeMode#canLeave and DatanodeManager#handleHeartbeat - HDFS - [issue]
...Found the deadlock during the Namenode startup. Attached jcarder report which shows the cycles about the deadlock situation....
http://issues.apache.org/jira/browse/HDFS-5832    Author: Rakesh R, 2014-01-26, 08:03
[expand - 1 more] - RE: BKJM - anyone using it? - HDFS - [mail # dev]
...One small correction to my previous mail thread, Bookkeeper latest version in 4.2.2 and planning to upgrade to this version.  Thanks, Rakesh  From: Rakesh R  Sent: 06 November...
   Author: Rakesh R, 2013-11-06, 04:46
RE: hadoop namenode recovery - HDFS - [mail # user]
...Hi,    I feel the most reliable approach is using NN-HA features with shared storage. Here the idea is having two Namenodes. Both the Active, Standby(Secondary) Namenodes will be p...
   Author: Rakesh R, 2013-01-16, 04:47
[HDFS-3382] BookKeeperJournalManager: NN startup is failing, when tries to recoverUnfinalizedSegments() a bad inProgress_ ZNodes - HDFS - [issue]
...Say, the InProgress_000X node is corrupted due to not writing the data(version, ledgerId, firstTxId) to this inProgress_000X znode. Namenode startup has the logic to recover all the unfinali...
http://issues.apache.org/jira/browse/HDFS-3382    Author: Rakesh R, 2012-05-08, 07:25
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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