版本： 7-7.15
简要来说，当 Elasticsearch 中的某个节点从源节点接收到集群状态，但它当前正在跟随另一个领导节点时，就会出现此错误。这可能是由于网络问题、配置错误或脑裂场景导致的。要解决此问题，你可以尝试重启节点、检查网络连接，或调整 discovery.zen.minimum_master_nodes 设置以防止脑裂。此外，确保集群设置在所有节点上配置正确且保持一致。
日志上下文 #
日志 “received cluster state from " + sourceNode + " but currently following " 类名是 Coordinator.java. 我们从 Elasticsearch 源代码中提取了以下内容，供那些寻求深入上下文的人参考：
if (publishRequest.getAcceptedState().term() == ZEN1_BWC_TERM && getCurrentTerm() == ZEN1_BWC_TERM
&& mode == Mode.FOLLOWER && Optional.of(sourceNode).equals(lastKnownLeader) == false) { logger.debug("received cluster state from {} but currently following {}; rejecting"; sourceNode; lastKnownLeader);
throw new CoordinationStateRejectedException("received cluster state from " + sourceNode + " but currently following "
+ lastKnownLeader + "; rejecting");
} final ClusterState localState = coordinationState.get().getLastAcceptedState();
