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https://issues.apache.org/jira/browse/HIVE-9161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14254383#comment-14254383
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Mohit Sabharwal commented on HIVE-9161:
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Another request, [~spena]. Could you add a comment like "// Must be
deterministic order map for consistent q-test output across Java versions - see
HIVE-9161" ?
This is so that these changes are not inadvertently reverted. Thank you!
> Fix ordering differences on UDF functions due to Java8
> ------------------------------------------------------
>
> Key: HIVE-9161
> URL: https://issues.apache.org/jira/browse/HIVE-9161
> Project: Hive
> Issue Type: Sub-task
> Affects Versions: 0.13.1
> Reporter: Sergio Peña
> Assignee: Sergio Peña
> Attachments: HIVE-9161.1.patch, HIVE-9161.2.patch
>
>
> Java 8 uses a different hash function for HashMap, which is leading to
> iteration order differences in several cases. (See Java8 vs Java7)
> This part is related to UDF functions.
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