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From "Pete Wyckoff (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3245) Provide ability to persist running jobs (extend HADOOP-1876)
Date Tue, 26 Aug 2008 19:02:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12625826#action_12625826
] 

Pete Wyckoff commented on HADOOP-3245:
--------------------------------------

bq. "safe-mode" that is automatically triggered when the namenode restarts. A similar thing
wold be very helpful for the JobTracker. 

Also, it would be nice to stop the JT from taking new submissions so the administrator can
allow the running jobs to complete before upgrading the cluster. Even though we can persist
these jobs, if there's a big upgrade or something else, the admin may want to drain all running
jobs before stopping the cluster.


> Provide ability to persist running jobs (extend HADOOP-1876)
> ------------------------------------------------------------
>
>                 Key: HADOOP-3245
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3245
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>            Reporter: Devaraj Das
>            Assignee: Amar Kamat
>         Attachments: HADOOP-3245-v2.5.patch, HADOOP-3245-v2.6.5.patch, HADOOP-3245-v2.6.9.patch,
HADOOP-3245-v4.1.patch, HADOOP-3245-v5.13.patch, HADOOP-3245-v5.14.patch, HADOOP-3245-v5.26.patch
>
>
> This could probably extend the work done in HADOOP-1876. This feature can be applied
for things like jobs being able to survive jobtracker restarts.

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