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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HADOOP-4323) Start times for some tasks are missing from task reports after job tracker restart
Date Mon, 06 Oct 2008 11:17:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amar Kamat reassigned HADOOP-4323:
----------------------------------

    Assignee: Amar Kamat

> Start times for some tasks are missing from task reports after job tracker restart
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-4323
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4323
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.19.0
>            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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