[jira] [Updated] (DRILL-7284) reusing the hashCodes computed at exchange nodes

["Arina Ielchiieva (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-7284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arina Ielchiieva updated DRILL-7284:
------------------------------------
    Fix Version/s:     (was: 1.17.0)
                   1.18.0

> reusing the hashCodes computed at exchange nodes
> ------------------------------------------------
>
>                 Key: DRILL-7284
>                 URL: https://issues.apache.org/jira/browse/DRILL-7284
>             Project: Apache Drill
>          Issue Type: New Feature
>            Reporter: Weijie Tong
>            Assignee: Weijie Tong
>            Priority: Major
>             Fix For: 1.18.0
>
>
> To HashJoin or HashAggregate, we will shuffle the input data according to hashCodes of join conditions or group by keys at the exchange nodes. This computing of the hash codes will be redo at the HashJoin or HashAggregate nodes. We could send the computed hashCodes of exchange nodes to the upper nodes. So the HashJoin or HashAggregate nodes will not need to do the hash computing again.



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