Mike Dusenberry created SYSTEMML-1575:
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Summary: 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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