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https://issues.apache.org/jira/browse/SPARK-13326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15195454#comment-15195454
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Koert Kuipers commented on SPARK-13326:
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I cannot reproduce it either anymore for Option. However i
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https://issues.apache.org/jira/browse/SPARK-13326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15195022#comment-15195022
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Cheng Hao commented on SPARK-13326:
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Can not reproduce it anymore, can you try it again?
> Dataset in
