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From "firegun (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-5606) JobTracker blocked for DFSClient: Failed recovery attempt
Date Tue, 19 Nov 2013 02:23:21 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

firegun resolved MAPREDUCE-5606.
--------------------------------

    Resolution: Fixed

<property>
<name>hadoop.job.history.user.location</name>
<final>true</final>
<value>none</value>
</property>

> 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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