Mike Dusenberry created SYSTEMML-1053:
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Summary: DataFrame Sparse Row Conversion Exception
Key: SYSTEMML-1053
URL: https://issues.apache.org/jira/browse/SYSTEMML-1053
Project: SystemML
Issue Type: Bug
Reporter: Mike Dusenberry
A {{java.lang.NegativeArraySizeException}} exception in {{SparseBlockMCSR}}
occurs if a user supplies a DataFrame to MLContext with an explicit row index
column ({{__INDEX}}) that contains sparse rows.
For example, if a user samples from a large DataFrame with an explicit dense
row index column, the result will be a DataFrame with sparse row indices.
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