Terence Yim created TWILL-139:
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Summary: ApplicationMaster hangs during start when ZooKeeper SASL
authentication is turned on
Key: TWILL-139
URL: https://issues.apache.org/jira/browse/TWILL-139
Project: Apache Twill
Issue Type: Bug
Components: core, yarn
Affects Versions: 0.4.1-incubating, 0.5.0-incubating
Reporter: Terence Yim
Assignee: Terence Yim
Priority: Blocker
It is caused by a race condition when one {{ZKClient}} instance is performing
the authentication while the {{EmbeddedKafkaServer}} is trying to start and
connect to zookeeper.
Here is the main method to reproduce the issue:
{noformat}
public static void main(String[] args) throws Exception {
String zkStr = args[0];
ZKClientService zkClient = ZKClientService.Builder.of(zkStr).build();
EmbeddedKafkaServer kafka = new
EmbeddedKafkaServer(generateKafkaConfig(zkStr));
zkClient.startAndWait(); // <-- This returns when SyncConnected
kafka.startAndWait(); // <-- This call hangs and never return
}
{noformat}
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