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From "Harsh J (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-23) Start times for some tasks are missing from task reports after job tracker restart
Date Sat, 31 Dec 2011 08:54:30 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-23?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J resolved MAPREDUCE-23.
------------------------------

    Resolution: Not A Problem

This has gone stale, and has not been seen recently. With MR2, I do not think this is an issue.
                
> Start times for some tasks are missing from task reports after job tracker restart
> ----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-23
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-23
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Hemanth Yamijala
>            Assignee: Amar Kamat
>         Attachments: HADOOP-4323-v1.patch
>
>
> When a JobTracker with the {{mapred.jobtracker.restart.recover}} option turned on, restarts,
it recovers task statuses from all tasks recorded in the history for running jobs. Task trackers
rejoin the restarted JobTracker and report the statuses of the tasks they had last run. These
tasks' start time is set to 0 in the task reports on the restarted JobTracker. This is as
seen in the web UI, or from the value of {{TaskReport.startTime}} retrieved from the job client.

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