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https://issues.apache.org/jira/browse/HIVE-1107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13291109#comment-13291109
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Dmitriy V. Ryaboy commented on HIVE-1107:
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I don't think comparing implementations of individual operators is going to
lead to anything useful -- one, because they work in the larger context of
their respective frameworks, and two, because the real value is in converging
on a single optimizer, not on "best" implementations of filters or joins.
> Generic parallel execution framework for Hive (and Pig, and ...)
> ----------------------------------------------------------------
>
> Key: HIVE-1107
> URL: https://issues.apache.org/jira/browse/HIVE-1107
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Carl Steinbach
>
> Pig and Hive each have their own libraries for handling plan execution. As we
> prepare to invest more time improving Hive's plan execution mechanism we
> should also start to consider ways of building a generic plan execution
> mechanism that is capable of supporting the needs of Hive and Pig, as well as
> other Hadoop data flow programming environments.
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