GitHub user srowen opened a pull request:

    https://github.com/apache/spark/pull/15149

    [SPARK-17057] [ML] ProbabilisticClassifierModels' thresholds should be > 0 
and sum < 1 to match randomForest cutoff

    ## What changes were proposed in this pull request?
    
    Match ProbabilisticClassifer.thresholds requirements to R randomForest 
cutoff, requiring all > 0 and sum < 1
    
    ## How was this patch tested?
    
    Jenkins tests plus new test cases

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

    $ git pull https://github.com/srowen/spark SPARK-17057

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

    https://github.com/apache/spark/pull/15149.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 #15149
    
----
commit ddc8dab1c94e5cca94ac3ed858f0ea6d385c2179
Author: Sean Owen <so...@cloudera.com>
Date:   2016-09-19T09:56:40Z

    Match ProbabilisticClassifer.thresholds requirements to R randomForest 
cutoff, requiring all > 0 and sum < 1

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