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https://issues.apache.org/jira/browse/SPARK-12869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng updated SPARK-12869:
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Shepherd: Xiangrui Meng
Target Version/s: 2.0.0
> Optimize conversion from BlockMatrix to IndexedRowMatrix
> --------------------------------------------------------
>
> Key: SPARK-12869
> URL: https://issues.apache.org/jira/browse/SPARK-12869
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 1.6.0
> Reporter: Fokko Driesprong
> Assignee: Fokko Driesprong
> Priority: Minor
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> In the current implementation of the BlockMatrix, the conversion to the
> IndexedRowMatrix is done by converting it to a CoordinateMatrix first. This
> is somewhat ok when the matrix is very sparse, but for dense matrices this is
> very inefficient.
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