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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1486) ReplicationMonitor thread goes away
Date Mon, 25 Jun 2007 19:32:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12507964
] 

Hadoop QA commented on HADOOP-1486:
-----------------------------------

+1

http://issues.apache.org/jira/secure/attachment/12360507/catchThrowable2.patch applied and
successfully tested against trunk revision r549977.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/327/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/327/console

> ReplicationMonitor thread goes away 
> ------------------------------------
>
>                 Key: HADOOP-1486
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1486
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.12.3
>            Reporter: Koji Noguchi
>            Assignee: dhruba borthakur
>            Priority: Blocker
>             Fix For: 0.14.0
>
>         Attachments: catchThrowable2.patch
>
>
> Saw many over/under replicated blocks in fsck output.
> .out file showed
> Exception in thread "org.apache.hadoop.dfs.FSNamesystem$ReplicationMonitor@2785982c"
java.lang.IllegalArgumentException: Unexpected non-existing data node: /99.9.99.0/99.9.99.42:99999
>   at org.apache.hadoop.net.NetworkTopology.checkArgument(NetworkTopology.java:379)
>   at org.apache.hadoop.net.NetworkTopology.isOnSameRack(NetworkTopology.java:424)
>   at org.apache.hadoop.dfs.FSNamesystem$ReplicationTargetChooser.chooseTarget(FSNamesystem.java:2853)
>   at org.apache.hadoop.dfs.FSNamesystem$ReplicationTargetChooser.chooseTarget(FSNamesystem.java:2816)
>   at org.apache.hadoop.dfs.FSNamesystem.pendingTransfers(FSNamesystem.java:2658)
>   at org.apache.hadoop.dfs.FSNamesystem.computeDatanodeWork(FSNamesystem.java:1774)
>   at org.apache.hadoop.dfs.FSNamesystem$ReplicationMonitor.run(FSNamesystem.java:1723)
>   at java.lang.Thread.run(Thread.java:619)
> (same as HADOOP-1232)
> And, jstack showed no ReplicationMonitor thread.

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