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[HDFS-5167] Add metrics about the NameNode retry cache - HDFS - [issue]
...It will be helpful to have metrics in NameNode about the retry cache, such as the retry count etc....
http://issues.apache.org/jira/browse/HDFS-5167    Author: Jing Zhao, 2014-04-10, 14:12
[HDFS-6053] Fix TestDecommissioningStatus and TestDecommission in branch-2 - HDFS - [issue]
...The failure is caused by the backport of HDFS-5285. In BlockManager#isReplicationInProgress, "if (bc instanceof MutableBlockCollection)" should be replaced by "if (bc.isUnderConstruction())"...
http://issues.apache.org/jira/browse/HDFS-6053    Author: Jing Zhao, 2014-04-10, 14:12
[HDFS-6135] In HDFS upgrade with HA setup, JournalNode cannot handle layout version bump when rolling back - HDFS - [issue]
...While doing HDFS upgrade with HA setup, if the layoutversion gets changed in the upgrade, the rollback may trigger the following exception in JournalNodes (suppose the new software bumped th...
http://issues.apache.org/jira/browse/HDFS-6135    Author: Jing Zhao, 2014-03-25, 14:03
[HDFS-6131] Move HDFSHighAvailabilityWithNFS.apt.vm and HDFSHighAvailabilityWithQJM.apt.vm from Yarn to HDFS - HDFS - [issue]
...Currently in branch-2, the document HDFSHighAvailabilityWithNFS.apt.vm and HDFSHighAvailabilityWithQJM.apt.vm are still in the Yarn project. We should move them to HDFS just like in trunk....
http://issues.apache.org/jira/browse/HDFS-6131    Author: Jing Zhao, 2014-03-20, 21:05
[HDFS-6062] TestRetryCacheWithHA#testConcat is flaky - HDFS - [issue]
...After adding retry cache metrics check, TestRetryCacheWithHA#testConcat can fail (https://builds.apache.org/job/PreCommit-HDFS-Build/6313//testReport/).The reason is that the test uses "dfs....
http://issues.apache.org/jira/browse/HDFS-6062    Author: Jing Zhao, 2014-03-06, 19:43
[HDFS-5898] Allow NFS gateway to login/relogin from its kerberos keytab - HDFS - [issue]
...According to the discussion in HDFS-5804:1. The NFS gateway should be able to get it's own tgts, and renew them.2. We should update the HdfsNfsGateway.apt.vm...
http://issues.apache.org/jira/browse/HDFS-5898    Author: Jing Zhao, 2014-03-06, 14:53
[HDFS-6041] Downgrade/Finalize should rename the rollback image instead of purging it - HDFS - [issue]
...After we do rollingupgrade downgrade/finalize, instead of purging the rollback image, we'd better rename it back to normal image, since the rollback image can be the most recent checkpoint....
http://issues.apache.org/jira/browse/HDFS-6041    Author: Jing Zhao, 2014-03-04, 04:43
[HDFS-5333] Improvement of current HDFS Web UI - HDFS - [issue]
...This is an umbrella jira for improving the current JSP-based HDFS Web UI....
http://issues.apache.org/jira/browse/HDFS-5333    Author: Jing Zhao, 2014-02-28, 21:45
Re: [VOTE] Merge HDFS-5535 Rolling Upgrade Improvement - HDFS - [mail # dev]
...+1 for the merging.On Fri, Feb 28, 2014 at 10:58 AM, Chris Nauroth wrote:CONFIDENTIALITY NOTICENOTICE: This message is intended for the use of the individual or entity to which it is address...
   Author: Jing Zhao, 2014-02-28, 19:04
[HDFS-6018] Exception recorded in LOG when IPCLoggerChannel#close is called - HDFS - [issue]
...Currently in IPCLoggerChannel#close, we have:@Override  public void close() {    QuorumJournalManager.LOG.info("Closing", new Exception());    // No m...
http://issues.apache.org/jira/browse/HDFS-6018    Author: Jing Zhao, 2014-02-27, 18:30
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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