Github user srowen commented on the issue:
https://github.com/apache/spark/pull/21955
Hm, I might need your eyes on this again @koeninger @zsxwing or even @ijuma
. I see this failure in the test, which looks like it's no longer happy
starting ZK in some cases. Does that ring any bells? not sure it would.
```
[info] org.apache.spark.streaming.kafka010.DirectKafkaStreamSuite ***
ABORTED *** (8 seconds, 741 milliseconds)
[info] kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting
for connection while in state: CONNECTING
[info] at
kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply$mcV$sp(ZooKeeperClient.scala:230)
[info] at
kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:226)
[info] at
kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:226)
[info] at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:251)
[info] at
kafka.zookeeper.ZooKeeperClient.kafka$zookeeper$ZooKeeperClient$$waitUntilConnected(ZooKeeperClient.scala:226)
[info] at kafka.zookeeper.ZooKeeperClient.<init>(ZooKeeperClient.scala:95)
[info] at kafka.zk.KafkaZkClient$.apply(KafkaZkClient.scala:1580)
[info] at
kafka.server.KafkaServer.kafka$server$KafkaServer$$createZkClient$1(KafkaServer.scala:348)
[info] at kafka.server.KafkaServer.initZkClient(KafkaServer.scala:372)
[info] at kafka.server.KafkaServer.startup(KafkaServer.scala:202)
[info] at
org.apache.spark.streaming.kafka010.KafkaTestUtils$$anonfun$setupEmbeddedKafkaServer$2.apply(KafkaTestUtils.scala:111)
```
See
https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/94150/ for
instance.
However I note that this test has also passed as well, at least in one of
the Maven-based test jobs on Jenkins. Could be a little build-specific but
nevertheless a problem.
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