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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-22103) Move HashAggregateExec parent consume to a separate function in codegen
Date Fri, 22 Sep 2017 15:42:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-22103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-22103:
------------------------------------

    Assignee:     (was: Apache Spark)

> Move HashAggregateExec parent consume to a separate function in codegen
> -----------------------------------------------------------------------
>
>                 Key: SPARK-22103
>                 URL: https://issues.apache.org/jira/browse/SPARK-22103
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: Juliusz Sompolski
>
> HashAggregateExec codegen uses two paths for fast hash table and a generic one.
> It generates code paths for iterating over both, and both code paths generate the consume
code of the parent operator, resulting in that code being expanded twice.
> This leads to a long generated function that might be an issue for the compiler (see
e.g. SPARK-21603).
> I propose to remove the double expansion by generating the consume code in a helper function
that can just be called from both iterating loop.



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