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Date: Mon, 1 Sep 2008 21:32:44 -0700 (PDT)
From: "Amar Kamat (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-4053) Schedulers need to know when a job
 has completed
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    [ https://issues.apache.org/jira/browse/HADOOP-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12627575#action_12627575 ] 

Amar Kamat commented on HADOOP-4053:
------------------------------------

I think {{JobInProgressListener.jobUpdated()}} should have {{JobStatus}} as a parameter which will save us from writing new specific apis. Internally one can keep a map of the old statuses and infer what has changed. 

> 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
>            Reporter: Vivek Ratan
>
> 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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