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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/08/02 12:10:00 UTC

[jira] [Commented] (SPARK-24999) Reduce unnecessary 'new' memory operations

    [ https://issues.apache.org/jira/browse/SPARK-24999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16566684#comment-16566684 ] 

Apache Spark commented on SPARK-24999:
--------------------------------------

User 'heary-cao' has created a pull request for this issue:
https://github.com/apache/spark/pull/21968

> Reduce unnecessary 'new' memory operations
> ------------------------------------------
>
>                 Key: SPARK-24999
>                 URL: https://issues.apache.org/jira/browse/SPARK-24999
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: caoxuewen
>            Priority: Major
>
> This PR is to solve the CodeGen code generated by fast hash, and there is no need to apply for a block of memory for every new entry, because unsafeRow's memory can be reused.



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