Matteo Bertozzi created HBASE-13182:
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             Summary: Test NamespaceAuditor/AccessController create/delete 
table is flaky
                 Key: HBASE-13182
                 URL: https://issues.apache.org/jira/browse/HBASE-13182
             Project: HBase
          Issue Type: Test
          Components: test
            Reporter: Matteo Bertozzi
            Assignee: Matteo Bertozzi
            Priority: Minor
         Attachments: HBASE-13182-v0.patch

Similar to HBASE-13179
TestNamespaceAuditor and the two test AccessController fail when create or 
delete table takes more time.and it is because the sync version of the Admin 
operation is not sync, but relies on the last operation on the server e.g. 
delete meta. 
but the post-operation method of the coprocessor is called after meta is 
deleted.. 
long story short, the client is not really sync and it will be fixed by 
HBASE-12439. 

similar to what we do in TestMasterObserver we can add an observer with a 
countDownLatch to wait the postOpHandler call.



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