Duo Zhang created HBASE-20362:
---------------------------------

             Summary: 
TestMasterShutdown.testMasterShutdownBeforeStartingAnyRegionServer is flaky
                 Key: HBASE-20362
                 URL: https://issues.apache.org/jira/browse/HBASE-20362
             Project: HBase
          Issue Type: Bug
            Reporter: Duo Zhang


{code}
    Thread shutdownThread = new Thread("Shutdown-Thread") {
      @Override
      public void run() {
        LOG.info("Before call to shutdown master");
        try {
          try (Connection connection =
              ConnectionFactory.createConnection(util.getConfiguration())) {
            try (Admin admin = connection.getAdmin()) {
              admin.shutdown();
            }
          }
          LOG.info("After call to shutdown master");
          cluster.waitOnMaster(MASTER_INDEX);
        } catch (Exception e) {
        }
      }
    };
{code}

https://builds.apache.org/job/HBASE-Flaky-Tests/28970/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.master.TestMasterShutdown-output.txt

In the output for a failed running, we only have 'Before call to shutdown 
master' but no 'After call to shutdown master', so I think there must be 
something wrong when calling admin.shutdown, but in the catch block below we 
just ignore the exception.



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