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https://issues.apache.org/jira/browse/MAPREDUCE-2648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13060667#comment-13060667
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Mahadev konar commented on MAPREDUCE-2648:
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devaraj,
Am not sure, if you already know about the MR-279 branch (the next version of
MR framework). We've been trying to integrate ZK into the framework from the
beginning. As for now, we are just doing restart with ZK but soon we should
have a HA soln with ZK.
> 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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