[ZOOKEEPER-2707] Fix "Unexpected bean exists!" issue in WatcherTests

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.10, 3.5.3
• Fix Version/s: 3.4.11, 3.6.0
• Component/s: tests
• Assignee: Michael Han
• Reporter: Abraham Fine
• Created: 23/Feb/17 21:26
• Updated: 10/Apr/17 17:25
• Resolved: 10/Apr/17 17:25

Description

All the WatcherTests occasionally fail with:

Error Message:
Unexpected bean exists! expected:<0> but was:<1>

Stack Trace:
junit.framework.AssertionFailedError: Unexpected bean exists! expected:<0> but was:<1>
	at org.apache.zookeeper.test.ClientBase.verifyUnexpectedBeans(ClientBase.java:498)
	at org.apache.zookeeper.test.ClientBase.startServer(ClientBase.java:477)
	at org.apache.zookeeper.test.ClientBase.setUp(ClientBase.java:460)
	at org.apache.zookeeper.test.WatcherTest.setUp(WatcherTest.java:76)

Here is an example: https://builds.apache.org/job/ZooKeeper_branch35_openjdk7/422/

Issue Links

• is broken by: ZOOKEEPER-2743 Netty connection leaks JMX connection bean upon connection close in certain race conditions.