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https://issues.apache.org/jira/browse/SPARK-13788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15188263#comment-15188263
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Ehsan Mohyedin Kermani commented on SPARK-13788:
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I'm going to send a PR in couple of minutes.
> CholeskyDecomposition has side effects!
> ---------------------------------------
>
> Key: SPARK-13788
> URL: https://issues.apache.org/jira/browse/SPARK-13788
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Affects Versions: 1.6.0
> Reporter: Ehsan Mohyedin Kermani
> Fix For: 2.0.0
>
>
> Current CholeskyDecomposition implementation calling from lapack has side
> effects due to mutating the array A representing the matrix in packed storage
> format (see http://www.netlib.org/lapack/lug/node123.html ) which should be
> captured by cloning A first!
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