private Properties getClusterProperties(String locators,
      String enableNetworkPartitionDetectionString) {
    Properties properties = getBasicProperties(locators);
    properties.setProperty(DISABLE_AUTO_RECONNECT, "true");
    properties.setProperty(ENABLE_CLUSTER_CONFIGURATION, "false");
    properties.setProperty(ENABLE_NETWORK_PARTITION_DETECTION,
        enableNetworkPartitionDetectionString);
    properties.setProperty(LOCATOR_WAIT_TIME, "10"); // seconds
    properties.setProperty(MEMBER_TIMEOUT, "2000");
    properties.setProperty(USE_CLUSTER_CONFIGURATION, "false");
    return properties;
  }
a locator is restarted twice with a server and ends up in a split-brain
geode-core/src/distributedTest/java/org/apache/geode/distributed/LocatorDUnitTest.java