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https://issues.apache.org/jira/browse/SPARK-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14090563#comment-14090563
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Sean Owen commented on SPARK-2906:
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I think this is a duplicate of a couple JIRAs already
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https://issues.apache.org/jira/browse/SPARK-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14089488#comment-14089488
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Sean Owen commented on SPARK-2906:
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Did this occur during shutdown? It may be mostly
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https://issues.apache.org/jira/browse/SPARK-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14090263#comment-14090263
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Guoqiang Li commented on SPARK-2906:
[~srowen] The reason seems to be the user code
