GitHub user srowen opened a pull request:

    https://github.com/apache/spark/pull/6854

    [SPARK-8335] [MLLIB] DecisionTreeModel.predict() return type not convenient

    Make Java-friendly predict return a JavaRDD of java.lang.Double instead of 
Scala Double, in the way ClassificationModel et al do
    
    CC @jkbradley Is it OK to change the API in an `@Experimental` class? it's 
a fix, but a change too.

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

    $ git pull https://github.com/srowen/spark SPARK-8335

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

    https://github.com/apache/spark/pull/6854.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 #6854
    
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commit 2c8f925a31fb9bb7a178e71d572397da1ba03923
Author: Sean Owen <[email protected]>
Date:   2015-06-17T08:36:19Z

    Make Java-friendly predict return a JavaRDD of java.lang.Double instead of 
Scala Double, in the way ClassificationModel et al do

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