[ 
https://issues.apache.org/jira/browse/HBASE-13176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Andrey Stepachev updated HBASE-13176:
-------------------------------------
    Description: 
Test fails with wrong number of listeners:
{code}
Tests run: 11, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 202.248 sec 
<<< FAILURE! - in org.apache.hadoop.hbase.TestZooKeeper
testRegionAssignmentAfterMasterRecoveryDueToZKExpiry(org.apache.hadoop.hbase.TestZooKeeper)
 Time elapsed: 48.687 sec <<< FAILURE!
java.lang.AssertionError: expected:<16> but was:<15>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:743)
at org.junit.Assert.assertEquals(Assert.java:118)
at org.junit.Assert.assertEquals(Assert.java:555)
at org.junit.Assert.assertEquals(Assert.java:542)
at 
org.apache.hadoop.hbase.TestZooKeeper.testRegionAssignmentAfterMasterRecoveryDueToZKExpiry(TestZooKeeper.java:518)
{code}




  was:
Test fails with wrong number of listeners:
{code}
Tests run: 11, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 202.248 sec 
<<< FAILURE! - in org.apache.hadoop.hbase.TestZooKeeper
testRegionAssignmentAfterMasterRecoveryDueToZKExpiry(org.apache.hadoop.hbase.TestZooKeeper)
 Time elapsed: 48.687 sec <<< FAILURE!
java.lang.AssertionError: expected:<16> but was:<15>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:743)
at org.junit.Assert.assertEquals(Assert.java:118)
at org.junit.Assert.assertEquals(Assert.java:555)
at org.junit.Assert.assertEquals(Assert.java:542)
at 
org.apache.hadoop.hbase.TestZooKeeper.testRegionAssignmentAfterMasterRecoveryDueToZKExpiry(TestZooKeeper.java:518)
{code}

Seems to be the problem with race of how fast 
org.apache.hadoop.hbase.coordination.ZkSplitLogWorkerCoordination is registered 
iteself as a listener.



> Flakey TestZooKeeper test.
> --------------------------
>
>                 Key: HBASE-13176
>                 URL: https://issues.apache.org/jira/browse/HBASE-13176
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Andrey Stepachev
>            Assignee: Andrey Stepachev
>
> Test fails with wrong number of listeners:
> {code}
> Tests run: 11, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 202.248 sec 
> <<< FAILURE! - in org.apache.hadoop.hbase.TestZooKeeper
> testRegionAssignmentAfterMasterRecoveryDueToZKExpiry(org.apache.hadoop.hbase.TestZooKeeper)
>  Time elapsed: 48.687 sec <<< FAILURE!
> java.lang.AssertionError: expected:<16> but was:<15>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:555)
> at org.junit.Assert.assertEquals(Assert.java:542)
> at 
> org.apache.hadoop.hbase.TestZooKeeper.testRegionAssignmentAfterMasterRecoveryDueToZKExpiry(TestZooKeeper.java:518)
> {code}



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