Joseph K. Bradley created SPARK-18341:
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Summary: Eliminate use of SingularMatrixException in
WeightedLeastSquares logic
Key: SPARK-18341
URL: https://issues.apache.org/jira/browse/SPARK-18341
Project: Spark
Issue Type: Improvement
Components: ML
Reporter: Joseph K. Bradley
Priority: Minor
WeightedLeastSquares uses an Exception to implement fallback logic for which
solver to use:
[https://github.com/apache/spark/blob/6f3697136aa68dc39d3ce42f43a7af554d2a3bf9/mllib/src/main/scala/org/apache/spark/ml/optim/WeightedLeastSquares.scala#L258]
We should use an error code instead of an exception.
* Note the error code should be internal, not a public API.
* We may be able to eliminate the SingularMatrixException class.
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