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https://issues.apache.org/jira/browse/PIG-4165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rohini Palaniswamy updated PIG-4165:
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Fix Version/s: (was: 0.14.0)
> Rework Hash based aggregation for Tez
> -------------------------------------
>
> Key: PIG-4165
> URL: https://issues.apache.org/jira/browse/PIG-4165
> Project: Pig
> Issue Type: Sub-task
> Components: tez
> Reporter: Rohini Palaniswamy
>
> pig.exec.mapPartAgg (https://wiki.apache.org/pig/PigHashBasedAggInMap) is
> currently only used for group by if there is any aggregation to be done. In
> Tez, should enable hash based grouping for normal and skewed joins, groupby
> with or without aggregation on the map side. This will play well with the
> IFile optimizations done and support for writing key and list of values
> (TEZ-1260) and reduce the sorting time on the map side.
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