Received a cluster state uuid v from a different master than the current one – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.15

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when there is a mismatch in the cluster state UUID between the current master node and another node in the Elasticsearch cluster. This could be due to network issues, node failures, or configuration errors. To resolve this issue, you can try the following: 1) Check the network connectivity between the nodes. 2) Verify the cluster health and ensure all nodes are properly connected. 3) Review the Elasticsearch configuration for any inconsistencies. 4) If necessary, restart the nodes or the entire cluster to reset the cluster state.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” received a cluster state (uuid[{}]/v[{}]) from a different master than the current one; ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster, discovery, master.

Log Context

Log “received a cluster state (uuid[{}]/v[{}]) from a different master than the current one;” classname is PendingClusterStatesQueue.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            final DiscoveryNode pendingMasterNode = pendingState.nodes().getMasterNode();
            if (Objects.equals(currentMaster; pendingMasterNode) == false) {
                contextsToRemove.add(pendingContext);
                if (pendingContext.committed()) {
                    // this is a committed state ; warn
                    logger.warn("received a cluster state (uuid[{}]/v[{}]) from a different master than the current one;"
                        + " rejecting (received {}; current {})";
                            pendingState.stateUUID(); pendingState.version(); pendingMasterNode; currentMaster);
                    pendingContext.listener.onNewClusterStateFailed(
                            new IllegalStateException("cluster state from a different master than the current one;" +
                                " rejecting (received " + pendingMasterNode + "; current " + currentMaster + ")"));

 

How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch