[jira] [Commented] (SPARK-4422) In some cases, Vectors.fromBreeze get wrong results.

["Xiangrui Meng (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14254081#comment-14254081 ] 

Xiangrui Meng commented on SPARK-4422:
--------------------------------------

fromBreeze is private and we don't use breeze vectors in a way that can trigger this bug. Actually it is not really necessary to backport this patch.

> In some cases, Vectors.fromBreeze get wrong results.
> ----------------------------------------------------
>
>                 Key: SPARK-4422
>                 URL: https://issues.apache.org/jira/browse/SPARK-4422
>             Project: Spark
>          Issue Type: Bug
>          Components: MLlib
>    Affects Versions: 1.0.2, 1.1.1, 1.2.0
>            Reporter: Guoqiang Li
>            Assignee: Guoqiang Li
>            Priority: Minor
>              Labels: backport-needed
>             Fix For: 1.2.0
>
>
> {noformat}
> import breeze.linalg.{DenseVector => BDV, DenseMatrix => BDM, sum => brzSum} 
> var x = BDM.zeros[Double](10, 10)
> val v = Vectors.fromBreeze(x(::, 0))
> assert(v.size == x.rows)
> {noformat}



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