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https://issues.apache.org/jira/browse/TEZ-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14979626#comment-14979626
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Rohini Palaniswamy commented on TEZ-2914:
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bq. I'm assuming it will simply apply the map property to all root vertices and
the reduce property to any non-root vertex. That should make it run similarly
to how it did in MapReduce, and I think we'd only need support for per-vertex
task concurrency limits in Tez.
That is right. That is what Pig has been doing for other properties and will
do for this as well.
> Ability to limit vertex concurrency
> -----------------------------------
>
> Key: TEZ-2914
> URL: https://issues.apache.org/jira/browse/TEZ-2914
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jonathan Eagles
>
> Add equivalent functionality of *MAPREDUCE-5583. Ability to limit running map
> and reduce tasks* in tez
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