@Override
    public void postCompletedCreateTableAction(
      final ObserverContext<MasterCoprocessorEnvironment> ctx, final TableDescriptor desc,
      final RegionInfo[] regions) throws IOException {
      // the AccessController test, some times calls only and directly the
      // postCompletedCreateTableAction()
      if (tableCreationLatch != null) {
        tableCreationLatch.countDown();
      }
    }
We were only clearing rows that had a hregioninfo column in hbase:meta. Mangled rows that were
missing the hregioninfo because of error were being left behind messing up any subsequent table
made with the same name. HBASE-12980
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestEnableTable.java