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https://issues.apache.org/jira/browse/HIVE-21228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16763673#comment-16763673
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Zoltan Haindrich commented on HIVE-21228:
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+1
> Replace all occurences of new Integer with Integer.valueOf
> ----------------------------------------------------------
>
> Key: HIVE-21228
> URL: https://issues.apache.org/jira/browse/HIVE-21228
> Project: Hive
> Issue Type: Improvement
> Reporter: Ivan Suller
> Assignee: Ivan Suller
> Priority: Trivial
> Attachments: HIVE-21228.01.patch, HIVE-21228.02.patch,
> HIVE-21228.03.patch
>
>
> Creating Integer objects with new Integer(...) creates a new object, while
> Integer.valueOf(...) can be cached (and is actually cached in most if not all
> JVMs) thus reducing GC overhead.
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