Joseph K. Bradley created SPARK-8419:
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Summary: Statistics.colStats could avoid an extra count()
Key: SPARK-8419
URL: https://issues.apache.org/jira/browse/SPARK-8419
Project: Spark
Issue Type: Improvement
Components: MLlib
Reporter: Joseph K. Bradley
Priority: Trivial
Statistics.colStats goes through RowMatrix to compute the stats. But
RowMatrix.computeColumnSummaryStatistics does an extra count() which could be
avoided. Not going through RowMatrix would skip this extra pass over the data.
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