tasks won't run on mesos when using fine grained

[Gary Ogden]

My Mesos cluster has 1.5 CPU and 17GB free.  If I set:

conf.set("spark.mesos.coarse", "true");
conf.set("spark.cores.max", "1");

in the SparkConf object, the job will run in the mesos cluster fine.

But if I comment out those settings above so that it defaults to fine
grained, the task never finishes. It just shows as 0 for everything in the
mesos frameworks (# of tasks, cpu, memory are all 0).  There's nothing in
the log files anywhere as to what's going on.

Thanks