[
https://issues.apache.org/jira/browse/MAPREDUCE-4824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617366#comment-13617366
]
Arun C Murthy commented on MAPREDUCE-4824:
------------------------------------------
Tom - sorry, looks like we lost track of this. Is this good to go? Tx
> Provide a mechanism for jobs to indicate they should not be recovered on
> restart
> --------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4824
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4824
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: mrv1
> Affects Versions: 1.1.0
> Reporter: Tom White
> Assignee: Tom White
> Attachments: MAPREDUCE-4824.patch, MAPREDUCE-4824.patch,
> MAPREDUCE-4824.patch, MAPREDUCE-4824.patch, MAPREDUCE-4824.patch,
> MAPREDUCE-4824.patch
>
>
> Some jobs (like Sqoop or HBase jobs) are not idempotent, so should not be
> recovered on jobtracker restart. MAPREDUCE-2702 solves this problem for MR2,
> however the approach there is not applicable for MR1, since even if we only
> use the job-level part of the patch and add a isRecoverySupported method to
> OutputCommitter, there is no way to use that information from the JT (which
> initiates recovery), since the JT does not instantiate OutputCommitters - and
> it shouldn't since they are user-level code. (In MR2 it's OK since the MR AM
> calls the method.)
> Instead, we can add a MR configuration property to say that a job is not
> recoverable, and the JT could safely read this from the job conf.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
