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https://issues.apache.org/jira/browse/TEZ-3206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15294021#comment-15294021
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Siddharth Seth commented on TEZ-3206:
-------------------------------------
I don't think the VertexManager is setup to handle multiple VertexManagerEvents
per task. In the pipelined shuffle case - the ordered output sends out a single
VertexManagerEvent only if it's the final event being sent out. We'll likely
need to do the same here.
Other than that - the patch looks good to me - simpler than the first patch :)
> Have unordered partitioned KV output send partition stats via
> VertexManagerEvent
> ---------------------------------------------------------------------------------
>
> Key: TEZ-3206
> URL: https://issues.apache.org/jira/browse/TEZ-3206
> Project: Apache Tez
> Issue Type: New Feature
> Reporter: Ming Ma
> Assignee: Ming Ma
> Attachments: TEZ-3206-2.patch, TEZ-3206.patch
>
>
> As part of the auto-parallelism feature, ordered partitioned KV output's
> partition stats are sent to ShuffleVertexManager via VertexManagerEvent. But
> this isn't available for unordered partitioned output. Having
> {{UnorderedPartitionedKVWriter}} send partition stats will enable the
> auto-parallelism support for unordered KV or other custom data routing
> mechanisms that depend on partition size.
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