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https://issues.apache.org/jira/browse/PIG-4785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rohini Palaniswamy updated PIG-4785:
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Fix Version/s: (was: 0.17.0)
0.18.0
> Optimize multi-query plan for diamond shape edges
> -------------------------------------------------
>
> Key: PIG-4785
> URL: https://issues.apache.org/jira/browse/PIG-4785
> Project: Pig
> Issue Type: Sub-task
> Components: tez
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.18.0
>
>
> If diamond shaped edge (two edges going to same vertex), we do not merge
> into Split. Lot of data is transferred because of that. It can be optimized
> to merge the operator into the Split, but still have a
> POValueInputTez->POValueOutputTez vertex which just will be used to redirect
> the input to avoid the diamond shaped edge. This will allow filtering and
> other processing to happen in the Split operator itself and the data
> transferred to the routing vertex will be minimal.
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