[jira] [Commented] (SYSTEMML-995) MLContext dataframe-frame conversion with index column

["Mike Dusenberry (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SYSTEMML-995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15535161#comment-15535161 ] 

Mike Dusenberry commented on SYSTEMML-995:
------------------------------------------

Also, the conversion code in {{MLContextConversionUtil.dataFrameToFrameObject()}} does not yet take into account frames with vectors, although the recent addition adds this support in the underlying {{FrameRDDConverterUtils.java}} class.  Therefore, the number of columns set when {{mc == null}} is incorrect.

> MLContext dataframe-frame conversion with index column
> ------------------------------------------------------
>
>                 Key: SYSTEMML-995
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-995
>             Project: SystemML
>          Issue Type: Bug
>          Components: APIs
>    Affects Versions: SystemML 0.11
>            Reporter: Matthias Boehm
>            Priority: Blocker
>
> MLContext currently always assumes data frame to frame conversion without existing index column. Since the user cannot communicate the existence of this column, the data conversion leads to incorrect results as an additional column is included in the output frame. We need make the MLContext handling of frames consistent with the handling of matrices.
> Thanks [~mwdusenb@us.ibm.com] for catching this issue. cc [~acs_s] [~deron]



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