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https://issues.apache.org/jira/browse/HADOOP-1486?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HADOOP-1486:
-------------------------------------
Priority: Blocker (was: Major)
This one might merit going into the 0.13 release as early as possible. Marking
it as a blocker pending further discussion,.
> 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
> Priority: Blocker
> Fix For: 0.14.0
>
> Attachments: catchThrowable.patch
>
>
> Saw many over/under replicated blocks in fsck output.
> .out file showed
> Exception in thread "[EMAIL PROTECTED]" 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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