Github user sryza commented on the pull request:
https://github.com/apache/spark/pull/148#issuecomment-39700608
Right, (b) is different than the original intent of the PR. The reason for
copying Spark's log4j instead of Hadoop's was the concern brought up by
@tgravescs earlier:
> The one downside to making the yarn one default is that we now get
different looking logs if the user just uses the spark one. In the default most
things go to syslog file, and if I just put in the conf/log4j.properties by
copying the template I won't get a syslog file and most things will be in
stdout right?
This applies to the master too.
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