fix num cores per executor if config not specified, improve logging #709
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fix num cores per executor if config not specified, improve logging
it seems the default for task CPUs if the config is not set is 1 instead of number of cores. A bit surprising, as I was sure it was the other way around.
The spark docs seem to suggest it is indeed 1 by default though:
http://spark.apache.org/docs/latest/configuration.html