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From "Mohammad Kamrul Islam (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6180) dead node count / listing is very broken in JMX and old GUI
Date Fri, 11 Apr 2014 21:26:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13967118#comment-13967118
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Mohammad Kamrul Islam commented on HDFS-6180:
---------------------------------------------

bq. The changes turn out to be a lot bigger than I anticipated. It might be risky to put it
in at the very last moment. Moving it to a blocker of 2.5.0.


What about for the release 2.4.1? It could be coming soon.


> dead node count / listing is very broken in JMX and old GUI
> -----------------------------------------------------------
>
>                 Key: HDFS-6180
>                 URL: https://issues.apache.org/jira/browse/HDFS-6180
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.3.0
>            Reporter: Travis Thompson
>            Assignee: Haohui Mai
>            Priority: Blocker
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6180.000.patch, HDFS-6180.001.patch, HDFS-6180.002.patch, HDFS-6180.003.patch,
HDFS-6180.004.patch, dn.log
>
>
> After bringing up a 578 node cluster with 13 dead nodes, 0 were reported on the new GUI,
but showed up properly in the datanodes tab.  Some nodes are also being double reported in
the deadnode and inservice section (22 show up dead, 565 show up alive, 9 duplicated nodes).

> From /jmx (confirmed that it's the same in jconsole):
> {noformat}
> {
>     "name" : "Hadoop:service=NameNode,name=FSNamesystemState",
>     "modelerType" : "org.apache.hadoop.hdfs.server.namenode.FSNamesystem",
>     "CapacityTotal" : 5477748687372288,
>     "CapacityUsed" : 24825720407,
>     "CapacityRemaining" : 5477723861651881,
>     "TotalLoad" : 565,
>     "SnapshotStats" : "{\"SnapshottableDirectories\":0,\"Snapshots\":0}",
>     "BlocksTotal" : 21065,
>     "MaxObjects" : 0,
>     "FilesTotal" : 25454,
>     "PendingReplicationBlocks" : 0,
>     "UnderReplicatedBlocks" : 0,
>     "ScheduledReplicationBlocks" : 0,
>     "FSState" : "Operational",
>     "NumLiveDataNodes" : 565,
>     "NumDeadDataNodes" : 0,
>     "NumDecomLiveDataNodes" : 0,
>     "NumDecomDeadDataNodes" : 0,
>     "NumDecommissioningDataNodes" : 0,
>     "NumStaleDataNodes" : 1
>   },
> {noformat}
> I'm not going to include deadnode/livenodes because the list is huge, but I've confirmed
there are 9 nodes showing up in both deadnodes and livenodes.



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