Processing 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 is updating its internal state with new cluster information. This could be due to changes in the cluster such as adding or removing nodes, updating settings, or changes in shard allocation. To resolve this, ensure that all nodes in the cluster are running compatible versions of OpenSearch. If the issue persists, check the cluster’s health and logs for any anomalies. If necessary, you may need to restart the nodes or the entire cluster. Always ensure to have a backup of your data before making any major changes.

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This guide will help you check for common problems that cause the log ” processing new cluster info ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: routing, cluster, allocation.

Log Context

Log “processing new cluster info” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            logger.trace("skipping monitor as no disk usage information is available");

        logger.trace("processing new cluster info");

        boolean reroute = false;
        String explanation = "";
        final long currentTimeMillis = currentTimeMillisSupplier.getAsLong();


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