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Posted to issues@spark.apache.org by "Ehsan Mohyedin Kermani (JIRA)" <ji...@apache.org> on 2016/03/10 23:25:40 UTC

[jira] [Closed] (SPARK-13788) CholeskyDecomposition has side effects!

     [ https://issues.apache.org/jira/browse/SPARK-13788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ehsan Mohyedin Kermani closed SPARK-13788.
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    Resolution: Not A Problem

> 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
>
> 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 ) and bx the known right hand side values which should be captured by cloning arrays first!



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