Github user srowen commented on the issue:
https://github.com/apache/spark/pull/21955
I see that `zookeeper.connect` is set to `[zkhost]:[zkport]` after ZK is
started, so looks like it's trying to do so. That much hasn't changed at least.
I can increase the timeout; although I don't know why it takes a while, it
could explain why it appears flaky. It's also consistent with KAFKA-7193
although I think we're on ZK 3.4.5 or so in Spark?
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