Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/1777#issuecomment-51266459
I have tested this on a standalone-cluster, closing off all the ports
except the ones in use. I was able to verify that the basic applications (Spark
shell, SparkPi, PySpark etc. with shuffles and caching) are working as
expected. I also tested standalone-cluster mode and found that we needed to
pass more ports to the executors. This was fixed as of the latest commit. In
addition, a few of the newly added ports turned out to be unnecessary, and they
have been removed along with any associated docs.
Changes are ready to go from my side. Now I'm just waiting on green lights
from Jenkins, who is currently sound asleep somewhere.
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