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https://issues.apache.org/jira/browse/SPARK-10906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph K. Bradley closed SPARK-10906.
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Resolution: Won't Fix
Target Version/s: (was: )
We'll fix this in Breeze, rather than in MLlib.
> More efficient SparseMatrix.equals
> ----------------------------------
>
> Key: SPARK-10906
> URL: https://issues.apache.org/jira/browse/SPARK-10906
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Joseph K. Bradley
> Priority: Minor
>
> SparseMatrix.equals currently uses toBreeze and then calls Breeze's equals
> method. However, it looks like Breeze's equals is inefficient:
> [https://github.com/scalanlp/breeze/blob/1130e0de31948d19225179d8500a8d2d1cc337d0/math/src/main/scala/breeze/linalg/Matrix.scala#L132]
> Breeze iterates over all values, including implicit zeros. We could make
> this more efficient.
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