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Posted to mapreduce-issues@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2012/06/08 22:34:23 UTC
[jira] [Updated] (MAPREDUCE-4328) Add the option to quiesce the
JobTracker
[ https://issues.apache.org/jira/browse/MAPREDUCE-4328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun C Murthy updated MAPREDUCE-4328:
-------------------------------------
Attachment: MAPREDUCE-4328.patch
Here is a preliminary patch - I figured it's simpler to call it 'safemode' for JT ala NN.
> Add the option to quiesce the JobTracker
> ----------------------------------------
>
> Key: MAPREDUCE-4328
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4328
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv1
> Affects Versions: 1.0.3
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Attachments: MAPREDUCE-4328.patch
>
>
> In several failure scenarios it would be very handy to have an option to quiesce the JobTracker.
> Recently, we saw a case where the NameNode had to be rebooted at a customer due to a random hardware failure - in such a case it would have been nice to not lose jobs by quiescing the JobTracker.
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