Github user tgravescs commented on the pull request:
https://github.com/apache/spark/pull/850#issuecomment-44415223
+1 looks good.
I will note this again, the interfaces weren't cleaned up and tagged until
Hadoop 2.2. Hadoop 0.23 has been around for much longer then that and this is
what the original port was done against. The YarnClientImpl api was marked
public in 0.23. Unfortunately when the port of spark to hadoop 2.2 was done it
wasn't caught.
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