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https://issues.apache.org/jira/browse/SPARK-8786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645999#comment-14645999
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Takeshi Yamamuro commented on SPARK-8786:
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Right now, spark can correctly handle binary types in join/distinct.
This fix just seems to make internal logics more efficient/clear.
> Create a wrapper for BinaryType
> -------------------------------
>
> Key: SPARK-8786
> URL: https://issues.apache.org/jira/browse/SPARK-8786
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Davies Liu
>
> The hashCode and equals() of Array[Byte] does check the bytes, we should
> create a wrapper (internally) to do that.
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