Github user kwmonroe commented on the issue:
https://github.com/apache/bigtop/pull/382
One other thing @buggtb, since this opens a new port, we'll need 10000
listed in layer.yaml:
https://github.com/apache/bigtop/blob/master/bigtop-packages/src/charm/spark/layer-spark/layer.yaml#L25
As well as a check for `spark_enable_thriftserver` in the `start` method to
know if we should run `hookenv.open_port`, similar to what we do for opening
the spark-master-ui port:
https://github.com/apache/bigtop/blob/master/bigtop-packages/src/charm/spark/layer-spark/lib/charms/layer/bigtop_spark.py#L377
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