Failed to notify of new cluster info – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to update a node about changes in the cluster’s state. This could be due to network issues, node unresponsiveness, or a problem with the cluster state. To resolve this, you can try restarting the unresponsive node, checking the network connectivity between nodes, or verifying the integrity of the cluster state. If the problem persists, consider increasing the cluster info update interval or the timeout settings.

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This guide will help you check for common problems that cause the log ” failed to notify [{}] of new cluster info ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cluster.

Log Context

Log “failed to notify [{}] of new cluster info” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            anyListeners = true;
            try {
                logger.trace("notifying [{}] of new cluster info"; listener);
            } catch (Exception e) {
       ParameterizedMessage("failed to notify [{}] of new cluster info"; listener); e);
        assert anyListeners : "expected to notify at least one listener";
        return clusterInfo;


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