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https://issues.apache.org/jira/browse/HIVE-14960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15751515#comment-15751515
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Marta Kuczora commented on HIVE-14960:
--------------------------------------
Thanks a lot for committing the patch.
> Improve the stability of TestNotificationListener
> -------------------------------------------------
>
> Key: HIVE-14960
> URL: https://issues.apache.org/jira/browse/HIVE-14960
> Project: Hive
> Issue Type: Bug
> Components: Test
> Affects Versions: 2.1.0
> Reporter: Marta Kuczora
> Assignee: Marta Kuczora
> Priority: Minor
> Fix For: 2.2.0
>
> Attachments: HIVE-14960.2.patch, HIVE-14960.patch
>
>
> The TestNotificationListener.testAMQListener test case fails occasionally
> with the following error:
> {noformat}
> Error Message
> expected:<[CREATE_DATABASE, CREATE_TABLE, ADD_PARTITION, ALTER_PARTITION,
> DROP_PARTITION, ALTER_TABLE, DROP_TABLE, DROP_DATABASE]> but
> was:<[CREATE_DATABASE, CREATE_TABLE, ADD_PARTITION, ALTER_PARTITION,
> DROP_PARTITION, ALTER_TABLE, DROP_TABLE]>
> Stacktrace
> java.lang.AssertionError: expected:<[CREATE_DATABASE, CREATE_TABLE,
> ADD_PARTITION, ALTER_PARTITION, DROP_PARTITION, ALTER_TABLE, DROP_TABLE,
> DROP_DATABASE]> but was:<[CREATE_DATABASE, CREATE_TABLE, ADD_PARTITION,
> ALTER_PARTITION, DROP_PARTITION, ALTER_TABLE, DROP_TABLE]>
> 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:144)
> at
> org.apache.hive.hcatalog.listener.TestNotificationListener.tearDown(TestNotificationListener.java:114)
> {noformat}
> This error can happen if the testAMQListener method is completed before the
> last DROP_TABLE message got processed and put to the actualMessages list by
> the onMessage method. This can happen if there is a small delay in receiving
> the message, since the message receiving is not synchronized with the
> testAMQListener method.
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