GitHub user hhbyyh opened a pull request:

    https://github.com/apache/spark/pull/13841

    [SPARK-16130][ML] model loading backward compatibility for 
ml.classfication.LogisticRegression

    ## What changes were proposed in this pull request?
    jira: https://issues.apache.org/jira/browse/SPARK-16130
    model loading backward compatibility for ml.classfication.LogisticRegression
    
    
    ## How was this patch tested?
    existing ut and manual test for loading old models.
    


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/hhbyyh/spark lrcomp

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/13841.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #13841
    
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commit 4f1f0e034c517b7732819860e64c3dc847c8fbfa
Author: Yuhao Yang <[email protected]>
Date:   2016-06-22T11:09:09Z

    load for old models

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