Github user Tagar commented on the issue: https://github.com/apache/zeppelin/pull/2894 Thanks @zjffdu cc @prabhjyotsingh - you were saying in [a comment for ZEPPELIN-3292](https://issues.apache.org/jira/browse/ZEPPELIN-3292?focusedCommentId=16387420&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16387420) there is some issue in the backend that have caused data duplication and you made a workaround in the [frontend here](https://github.com/apache/zeppelin/pull/2835) Can you please help review if this PR also hopefully fixes that data duplication in the backend? Not sure if we need a separate PR for that? IPython/IPySpark is newer in Zeppelin and may have some issues so would be great to make it rock-solid as I know there are more PySpark users than Spark users using Scala API..
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