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https://issues.apache.org/jira/browse/MAPREDUCE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13825569#comment-13825569
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viswanathan commented on MAPREDUCE-5606:
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Hi Chris,
By adding the below property hope it will resolve temporarily, how to resolve
this permanently.
<property>
<name>hadoop.job.history.user.location</name>
<final>true</final>
<value>none</value>
</property>
Earlier we had used Hadoop 1.0.3 and 1.0.4 versions, but we never face this
type of issue. Only we are facing in hadoop version 1.2.1
> JobTracker blocked for DFSClient: Failed recovery attempt
> ---------------------------------------------------------
>
> Key: MAPREDUCE-5606
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5606
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 1.0.3
> Environment: centos 5.8 jdk 1.7
> Reporter: firegun
> Assignee: firegun
> Priority: Critical
>
> when a datanode was crash,the server can ping ok,but can not call rpc ,and
> also can not ssh login. and then jobTracker may be request a block on this
> datanode.
> it will happened ,the JobTracker can not work,the webUI is also
> unwork,hadoop job -list also unwork,the jobTracker logs no other info .
> and then we need to restart the datanode.
> then jobTraker can work too,but the taskTracker num come to zero,
> we need run : hadoop mradmin -refreshNodes
> then the JobTracker begin to add taskTraker ,but is very slowly.
> this problem occur 5time in 2weeks.
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