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https://issues.apache.org/jira/browse/SPARK-2093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14026232#comment-14026232
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Takuya Ueshin commented on SPARK-2093:
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PRed: https://github.com/apache/spark/pull/1034
> NullPropagation should use exact type value.
> --------------------------------------------
>
> Key: SPARK-2093
> URL: https://issues.apache.org/jira/browse/SPARK-2093
> Project: Spark
> Issue Type: Bug
> Reporter: Takuya Ueshin
>
> {{NullPropagation}} should use exact type value when transform {{Count}} or
> {{Sum}}.
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