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https://issues.apache.org/jira/browse/TEZ-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995117#comment-14995117
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Jeff Zhang commented on TEZ-2581:
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bq. Alternatively, we could put the faking logic into NoOpVertexManager and
based on -1 tasks it could self trigger internally and call
setParallelism/reconfigureVertex with real data. This is option 3).
[~bikassaha], thanks for the patient explanation. I'm afraid
setParallelism/reconfigureVertex can only be called when vertex it in
initializing/running. Seems VM has not way to query the state of vertex to
trigger the call of setParallelism/reconfigureVertex . So I will try to
implement the option 4 to get vertex state change notification from Vertex
> 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-10.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, TEZ-2581-WIP-7.patch,
> TEZ-2581-WIP-8.patch, TEZ-2581-WIP-9.patch, TezRecoveryRedesignProposal.pdf,
> TezRecoveryRedesignV1.1.pdf
>
>
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