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From "Ramkumar Vadali (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-2214) TaskTracker should release slot if task is not launched
Date Sat, 11 Dec 2010 01:25:02 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ramkumar Vadali updated MAPREDUCE-2214:
---------------------------------------

    Status: Patch Available  (was: Open)

> TaskTracker should release slot if task is not launched
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-2214
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2214
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.1
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>         Attachments: MAPREDUCE-2214.patch
>
>
> TaskTracker.TaskInProgress.launchTask() does not launch a task if it is not in an expected
state. However, in the case where the task is not launched, the slot is not released. We have
observed this in production - the task was in SUCCEEDED state by the time launchTask() got
to it and then the slot was never released. It is not clear how the task got into that state,
but it is better to handle the case.

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