ZKHelixDataAccessor accessor =
new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
Builder keyBuilder = accessor.keyBuilder();
InstanceConfig config = accessor.getProperty(keyBuilder.instanceConfig(instanceName));
config.removeTag(tag);
accessor.setProperty(keyBuilder.instanceConfig(instanceName), config);
}
public void close() {
if (_zkClient != null) {