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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4350) Ability to pause/resume jobs
Date Mon, 06 Oct 2008 08:07:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637043#action_12637043

Amar Kamat commented on HADOOP-4350:

The question one needs to answer here is for how long should we keep them in memory and how
many of them?

> Ability to pause/resume jobs
> ----------------------------
>                 Key: HADOOP-4350
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4350
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>            Reporter: Amar Kamat
> Consider a case where the user job depends on some external entity/service like a database
or a web service. If the service needs restart or encounters a failure, the user should be
able to pause the job and resume only when the service is up. This will be better than re-executing
the whole job. Hence there should be some way to pause/resume jobs (from web-ui/command line)

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