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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3245) Provide ability to persist running jobs (extend HADOOP-1876)
Date Fri, 29 Aug 2008 06:26:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12626859#action_12626859
] 

Hemanth Yamijala commented on HADOOP-3245:
------------------------------------------

bq. Note that a working solution for HADOOP-3970 is present in this patch too.

I think it is better to submit the solution of HADOOP-3970 as part of that JIRA, rather than
including it in this patch. If I understand correctly, without this fix, everything except
counters will be recovered for running jobs on a restart. Probably HADOOP-3970 should block
this and get committed first.

Also, I think it will be good to have a configuration variable to disable job recovery. This
is to provide backwards compatibility, and also gives a way to disable this feature if required.

> 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,
HADOOP-3245-v5.30-nolog.patch, HADOOP-3245-v5.31.3-nolog.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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