don't allow rebalancing to interleave with zk stop'
don't allow rebalancing to interleave with zk stop'

wikimedia/operations-debs-python-pykafka,thedrow/samsa,thedrow/samsa,wikimedia/operations-debs-python-pykafka,benauthor/pykafka,benauthor/pykafka,thedrow/samsa,wikimedia/operations-debs-python-pykafka,benauthor/pykafka