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https://issues.apache.org/jira/browse/SPARK-6429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-6429.
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Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 12157
[https://github.com/apache/spark/pull/12157]
> Add to style checker "hashCode and equals should be defined together"
> ---------------------------------------------------------------------
>
> Key: SPARK-6429
> URL: https://issues.apache.org/jira/browse/SPARK-6429
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Reporter: Reynold Xin
> Fix For: 2.0.0
>
>
> Otherwise it is dangerous to have equals defined, but not hashCode, leading
> to weird behavior in hash maps.
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