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https://issues.apache.org/jira/browse/TEZ-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14979633#comment-14979633
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Jeff Zhang commented on TEZ-2581:
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>>> Why do we still have a recover transition? My understanding was that there
>>> will be no transition based recovery for completed DAGs. Only running DAGs
>>> will go through transitions and in that case we would send the normal init
>>> event from the AM to the DAG and normal transitions will take over.
For completed dag, we still need to recover the dag and its vertices. Because
client may still call getDagStatus & getVertexStatus for it. The
RecoveryTransition is the entry point for the 2 kinds of recovery (completed
dag & running dag). Will add more comment on it.
> Umbrella for Tez Recovery Redesign
> ----------------------------------
>
> Key: TEZ-2581
> URL: https://issues.apache.org/jira/browse/TEZ-2581
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Jeff Zhang
> Assignee: Jeff Zhang
> Attachments: TEZ-2581-WIP-1.patch, TEZ-2581-WIP-2.patch,
> TEZ-2581-WIP-3.patch, TEZ-2581-WIP-4.patch, TEZ-2581-WIP-5.patch,
> TEZ-2581-WIP-6.patch, TezRecoveryRedesignProposal.pdf,
> TezRecoveryRedesignV1.1.pdf
>
>
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