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https://issues.apache.org/jira/browse/TEZ-802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13893936#comment-13893936
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Bikas Saha commented on TEZ-802:
--------------------------------
1) Determining placement of consumer on same node/rack as the producer
2) Determining co-location of sources that converge onto a common consumer via
1-1 edges.
> Determination of Task Placement for 1-1 Edges
> ---------------------------------------------
>
> Key: TEZ-802
> URL: https://issues.apache.org/jira/browse/TEZ-802
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Bikas Saha
> Assignee: Bikas Saha
>
> Currently, task placement is determined by TaskLocationHints that are
> specified by the user in the API or during runtime. Everything else runs as
> without placement constraints. While this works for broadcase and
> scatter-gather edges, it does not work for 1-1 edges.
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