GitHub user bersprockets opened a pull request:

    https://github.com/apache/spark/pull/20638

    [SPARK-23417][python] Fix the build instructions supplied by exception 
messages in python streaming tests

    ## What changes were proposed in this pull request?
    
    Fix the build instructions supplied by exception messages in python 
streaming tests. 
    
    I also added -DskipTests to the maven instructions to avoid the 170 minutes 
of scala tests that occurs each time one wants to add a jar to the assembly 
directory.
    
    ## How was this patch tested?
    
    - clone branch
    - run build/sbt package
    - run python/run-tests --modules "pyspark-streaming" , expect error message
    - follow instructions in error message. i.e., run build/sbt 
assembly/package streaming-kafka-0-8-assembly/assembly
    - rerun python tests, expect error message
    - follow instructions in error message. i.e run build/sbt -Pflume 
assembly/package streaming-flume-assembly/assembly
    - rerun python tests, see success.
    - repeated all of the above for mvn version of the process.
    


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

    $ git pull https://github.com/bersprockets/spark SPARK-23417_propa

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

    https://github.com/apache/spark/pull/20638.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 #20638
    
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commit a80a4c5df8064934784091e8650b8d13d09ef66f
Author: Bruce Robbins <bersprockets@...>
Date:   2018-02-17T17:30:06Z

    Fix build instructions embedded in error message

commit 824131355cfdd531101308cc6f803820aa5c941e
Author: Bruce Robbins <bersprockets@...>
Date:   2018-02-17T18:55:17Z

    Fix mvn instructions also

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