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https://issues.apache.org/jira/browse/HADOOP-5276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674188#action_12674188
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Amar Kamat commented on HADOOP-5276:
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Also noticed that the finish time when a the task is killed upon restart is
also 0.
> 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
> Priority: Critical
>
> 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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