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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2960) A single TT disk failure can cause the job to fail
Date Tue, 29 Nov 2011 19:29:39 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13159476#comment-13159476
] 

Todd Lipcon commented on MAPREDUCE-2960:
----------------------------------------

This looks like it failed because of a failed disk on the *JT* rather than the TT:
...
	at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:1203)
	at org.apache.hadoop.mapred.JobInProgress.<init>(JobInProgress.java:415)
...

are you running the JT on a machine that has bad disks simulated?
                
> A single TT disk failure can cause the job to fail
> --------------------------------------------------
>
>                 Key: MAPREDUCE-2960
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2960
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: tasktracker
>    Affects Versions: 0.20.204.0
>            Reporter: Eli Collins
>
> TaskInProgress#kill in the JT fails because TaskStatus#setFinishTimes fails because no
start time was set. There's no start time because TaskTracker#run (DefaultTaskController#initializeJob)
failed before it was set. The fix is to have TT#launchTask set the start time before it starts
the task runner, this way there's a valid start time even if TT#run fails.

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