@Nullable
      @Override
      public Table apply(@Nullable Table table) {
        LOG.info("Performing injection on table " + table.getTableName());
        if (table.getTableName().equalsIgnoreCase("t1")){
          injectionPathCalled = true;
          return null;
        } else {
          nonInjectedPathCalled = true;
          return table;
        }
      }
@param sourceTableName  -- Provide the fully qualified table name
@param replicaTableName -- Provide the fully qualified table name
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosExternalTables.java