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https://issues.apache.org/jira/browse/SPARK-24999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-24999.
---------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 21968
[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
> Assignee: caoxuewen
> Priority: Major
> Fix For: 3.0.0
>
>
> 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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