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Posted to issues@spark.apache.org by "Jacek Laskowski (JIRA)" <ji...@apache.org> on 2016/07/22 14:48:20 UTC

[jira] [Commented] (SPARK-16683) Group by does not work after multiple joins of the same dataframe

    [ https://issues.apache.org/jira/browse/SPARK-16683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15389628#comment-15389628 ] 

Jacek Laskowski commented on SPARK-16683:
-----------------------------------------

Hey Witek, can you include the sample code and the exception to this JIRA issue? Don't have access to Zeppelin.

> Group by does not work after multiple joins of the same dataframe
> -----------------------------------------------------------------
>
>                 Key: SPARK-16683
>                 URL: https://issues.apache.org/jira/browse/SPARK-16683
>             Project: Spark
>          Issue Type: Bug
>          Components: Optimizer
>    Affects Versions: 1.6.0, 1.6.1, 1.6.2, 2.0.0
>         Environment: local and yarn
>            Reporter: Witold Jędrzejewski
>         Attachments: Duplicates Problem Presentation.json
>
>
> When I join a dataframe, group by a field from it, then join it again by different field and group by field from it, second aggregation does not trigger.
> The detailed description and minimal example, workaround and possible cause are in the attachment, in a form of Zeppelin notebook.



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