[jira] [Commented] (SYSTEMML-1575) DataType Change Test Failure

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

    [ https://issues.apache.org/jira/browse/SYSTEMML-1575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15995483#comment-15995483 ] 

Mike Dusenberry commented on SYSTEMML-1575:
-------------------------------------------

Fix submitted in [PR 468 | https://github.com/apache/incubator-systemml/pull/468].

> DataType Change Test Failure
> ----------------------------
>
>                 Key: SYSTEMML-1575
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1575
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Mike Dusenberry
>            Assignee: Mike Dusenberry
>
> While working on SYSTEMML-1554, an additional bug was uncovered. Specifically, with the IPA scalar replacement enhancement, the {{org.apache.sysml.test.integration.functions.misc.DataTypeChangeTest#testDataTypeChangeValidate4c}} test has started to fail.  Looking into it, it fails due to trying to cast a Matrix to a Scalar object.  At a deeper level, it looks like the propagated variable map is holding onto the "matrix" `X`, rather than dropping it as it should, since X is turned into a scalar by the call `X = foo(X)`.  Interestingly, the FunctionOp for the `foo` function is marked as having an `Unknown` datatype and valuetype.  Overall, this seems like a bug that was just hidden before, rather than being newly introduced.



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