docs: public void removeNode(Node node) {
          Set<JobClientNode> jobClientNodes = NODE_MAP.get(node.getGroup());
          if (jobClientNodes != null && jobClientNodes.size() != 0) {
              for (JobClientNode jobClientNode : jobClientNodes) {
                  if (node.getIdentity().equals(jobClientNode.getIdentity())) {
                      LOGGER.info("remove JobClient node:{}", jobClientNode);
                      jobClientNodes.remove(jobClientNode);
                  }
              }
          }
      }