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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4653) Changing priority of a completed job causes problems in JobInProgressListeners
Date Thu, 13 Nov 2008 11:59:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12647266#action_12647266
] 

Amar Kamat commented on HADOOP-4653:
------------------------------------

+1 for throwing an exception. In the web-ui we should disable such invalid operations like

- changing priority for completed jobs
- killing completed jobs (?)

> Changing priority of a completed job causes problems in JobInProgressListeners
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-4653
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4653
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Hemanth Yamijala
>
> If the priority of a completed job is changed, a {{JobChangeEvent}} is raised and the
{{JobInProgressListeneners}}, like the capacity scheduler, are notified. Most implementations
handle the event by re-sorting their data structures, and thus could end up re-inserting the
completed job into their lists.

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