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[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
[HDFS-6026] Fix TestDFSUpgrade and TestDataNodeRollingUpgrade - HDFS - [issue]
...These two unit tests failed after HDFS-6000 changes the expectation of SafeMode for non-HA setup: the NN now needs to be in SafeMode for rolling upgrade prepare....
http://issues.apache.org/jira/browse/HDFS-6026    Author: Jing Zhao, 2014-02-27, 03:11
[HDFS-6000] Avoid saving namespace when starting rolling upgrade - HDFS - [issue]
...Currently when administrator sends the "rollingUpgrade start" command to the active NN, the NN will trigger a checkpoint (the rollback fsimage). This will cause NN not able to serve for a pe...
http://issues.apache.org/jira/browse/HDFS-6000    Author: Jing Zhao, 2014-02-25, 22:01
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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