GitHub user yanboliang opened a pull request:

    https://github.com/apache/spark/pull/9811

    [SPARK-11820] [ML] [PySpark] PySpark LiR & LoR should support weightCol

    [SPARK-7685](https://issues.apache.org/jira/browse/SPARK-7685) and 
[SPARK-9642](https://issues.apache.org/jira/browse/SPARK-9642) have already 
supported setting weight column for ```LogisticRegression``` and 
```LinearRegression```. It's a very important feature, PySpark should also 
support.

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

    $ git pull https://github.com/yanboliang/spark spark-11820

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

    https://github.com/apache/spark/pull/9811.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 #9811
    
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commit 3cd89f183b86b4002a9d2944863406f267b9fe32
Author: Yanbo Liang <[email protected]>
Date:   2015-11-18T15:14:25Z

    PySpark LiR & LoR should support weightCol

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