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https://issues.apache.org/jira/browse/MAPREDUCE-2648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061228#comment-13061228
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Devaraj K commented on MAPREDUCE-2648:
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Hi Mahadev,

Sorry for the delay in response.

Yes. I am aware of MapRed NextGen.

>From my understanding, it might take some time for MapRed NextGen to stabilize 
>and become production ready.

So I was considering following points.

ZOOKEEPER-1080 provides very simple, generic solution to support HA scenario.

This solution tries to incorporate it for JobTracker.


Thanks & Regards,
Abhijit

> High Availability for JobTracker
> --------------------------------
>
>                 Key: MAPREDUCE-2648
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2648
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Devaraj K
>         Attachments: High Availability for JobTracker.pdf
>
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> In Hadoop cluster, JobTracker is responsible for managing the life cycle of 
> MapReduce jobs. If JobTracker fails, then MapReduce service will not be 
> available until JobTracker is restarted. We propose an automatic failover 
> solution for JobTracker to address such single point of failure. It is based 
> on Leader Election Framework suggested in ZOOKEEPER-1080
> Please refer to attached document.

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