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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4053) Schedulers need to know when a job has completed
Date Fri, 26 Sep 2008 08:41:46 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amar Kamat updated HADOOP-4053:
-------------------------------

    Attachment: HADOOP-4053-v2.patch

Attaching a patch that
- adds an abstract {{jobCompleted()}} api to {{JobInProgressListener}}
- changes the behaviour of capacity scheduler to update itself on a completed job event
- adds no-op for other {{JobInProgressListener}} implementations
- changes the capacity scheduler test case to test the desired behaviour
- update the listeners upon job completion from JobTracker.

_test-patch_ and _ant test_ pass on my box. 


> Schedulers need to know when a job has completed
> ------------------------------------------------
>
>                 Key: HADOOP-4053
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4053
>             Project: Hadoop Core
>          Issue Type: Improvement
>    Affects Versions: 0.19.0
>            Reporter: Vivek Ratan
>            Assignee: Amar Kamat
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-4053-v1.patch, HADOOP-4053-v2.patch
>
>
> The JobInProgressListener interface is used by the framework to notify Schedulers of
when jobs are added, removed, or updated. Right now, there is no way for the Scheduler to
know that a job has completed. jobRemoved() is called when a job is retired, which can happen
many hours after a job is actually completed. jobUpdated() is called when a job's priority
is changed. We need to notify a listener when a job has completed (either successfully, or
has failed or been killed). 

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