Seth Hendrickson created SPARK-20083:
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Summary: Change matrix toArray to not create a new array when
matrix is already column major
Key: SPARK-20083
URL: https://issues.apache.org/jira/browse/SPARK-20083
Project: Spark
Issue Type: Improvement
Components: ML
Affects Versions: 2.2.0
Reporter: Seth Hendrickson
Priority: Minor
{{toArray}} always creates a new array in column major format, even when the
resulting array is the same as the backing values. We should change this to
just return a reference to the values array when it is already column major.
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