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https://issues.apache.org/jira/browse/SPARK-18815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15737134#comment-15737134
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Apache Spark commented on SPARK-18815:
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User 'wzhfy' has created a pull request for this issue:
https://github.com/apache/spark/pull/16243
> NPE when collecting column stats for string/binary column having only null
> values
> ---------------------------------------------------------------------------------
>
> Key: SPARK-18815
> URL: https://issues.apache.org/jira/browse/SPARK-18815
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.1
> Reporter: Zhenhua Wang
>
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