Refreshing 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 is trying to update its internal state about the cluster’s nodes and their metadata. This could be due to network issues, heavy load, or a node leaving or joining the cluster. To resolve this, you can check the network connectivity between nodes, ensure the cluster is not overloaded with requests, and verify the status of nodes. If a node has recently left or joined, wait for the cluster state to stabilize. Also, consider increasing the cluster info update interval if the error persists.

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This guide will help you check for common problems that cause the log ” refreshing 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 “refreshing cluster info” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

     * Refreshes the ClusterInfo in a blocking fashion
    public final ClusterInfo refresh() {
        logger.trace("refreshing cluster info");
        final CountDownLatch nodeLatch = updateNodeStats(new ActionListener() {
            public void onResponse(NodesStatsResponse nodesStatsResponse) {
                final Map leastAvailableUsagesBuilder = new HashMap();
                final Map mostAvailableUsagesBuilder = new HashMap();


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