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https://issues.apache.org/jira/browse/HIVE-20032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16547777#comment-16547777
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Rui Li commented on HIVE-20032:
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Hi [~stakiar], kryo was relocated not just because Spark uses a different
version. My concern is if we remove the relocation, it may break user's
applications that depend on Hive.
> Don't serialize hashCode when groupByShuffle and RDD cacheing is disabled
> -------------------------------------------------------------------------
>
> Key: HIVE-20032
> URL: https://issues.apache.org/jira/browse/HIVE-20032
> Project: Hive
> Issue Type: Improvement
> Components: Spark
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
> Priority: Major
> Attachments: HIVE-20032.1.patch, HIVE-20032.2.patch,
> HIVE-20032.3.patch, HIVE-20032.4.patch
>
>
> Follow up on HIVE-15104, if we don't enable RDD cacheing or groupByShuffles,
> then we don't need to serialize the hashCode when shuffling data in HoS.
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