Github user tsudukim commented on the pull request:
https://github.com/apache/spark/pull/1384#issuecomment-49944917
@lianhuiwang It appears to be a different problem to SPARK-2298.
Is your aim same as this ticket?
https://issues.apache.org/jira/browse/SPARK-1362
If so, how about creating another PR to modify it?
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