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https://issues.apache.org/jira/browse/HADOOP-5276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681743#action_12681743
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Hudson commented on HADOOP-5276:
--------------------------------

Integrated in Hadoop-trunk #778 (See 
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/778/])
    . Moved the comment about 5276 to branch-0.20 section.


> Upon a lost tracker, the task's start time is reset to 0
> --------------------------------------------------------
>
>                 Key: HADOOP-5276
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5276
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>            Priority: Critical
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5276-v1.1.patch, HADOOP-5276-v1.2.patch, 
> HADOOP-5276-v1.3.patch
>
>
> Upon lost tracker, the JIP (via JobTracker.lostTracker() -> 
> JobInProgress.failedTask()) hand crafts task status (marking the attempt as 
> KILLED) and updates the JobInProgress (via JobInProgress.updateTaskStatus()). 
> This status contains the attempt start time as 0. One major impact would be 
> that the listener will overwrite the last start time value with the new one 
> and hence the start tiem will get garbled.

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