private void restartBridgeServer(VM server, final int port) {
    server.invoke(new CacheSerializableRunnable("Start cache server") {
      @Override
      public void run2() {
        try {
          restartBridgeServers(getCache());
        } catch (IOException e) {
          throw new CacheException(e) {};
        }
      }
    });
  }
Tests execution of queries with NULL in where clause like where ID = NULL etc.
geode-cq/src/distributedTest/java/org/apache/geode/cache/query/cq/dunit/CqQueryDUnitTest.java