Exception thrown by listener while notifying of unchanged cluster state n%s – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.4

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Briefly, this error occurs when a listener in Elasticsearch tries to notify about an unchanged cluster state but encounters an exception. This could be due to a variety of reasons such as network issues, node failures, or configuration problems. To resolve this issue, you can try the following: 1) Check the network connectivity between the nodes; 2) Verify the health of the nodes in the cluster; 3) Review the cluster settings and configurations to ensure they are correct; 4) Check the Elasticsearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” exception thrown by listener while notifying of unchanged cluster state:\n%s ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “exception thrown by listener while notifying of unchanged cluster state:\n%s” classname is MasterService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                } else {
            } catch (Exception e) {
                logger.error(() -> format("exception thrown by listener while notifying of unchanged cluster state:\n%s"; clusterState); e);

        void onPublishFailure(FailedToCommitClusterStateException e) {
            if (publishedStateConsumer == null && onPublicationSuccess == null) {


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