Failed to update cluster state for weighted routing weights – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.4-2.9

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Briefly, this error occurs when OpenSearch fails to update the cluster state for weighted routing weights. This could be due to network issues, insufficient permissions, or a problem with the cluster state. To resolve this, you can try the following: 1) Check your network connection and ensure that all nodes are properly connected. 2) Verify that you have the necessary permissions to update the cluster state. 3) Check the health of your cluster and fix any issues. 4) If the problem persists, consider restarting your OpenSearch cluster.

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

Log Context

Log “failed to update cluster state for weighted routing weights [{}]” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                return ClusterState.builder(currentState).metadata(mdBuilder).build();

            public void onFailure(String source; Exception e) {
                logger.warn(() -> new ParameterizedMessage("failed to update cluster state for weighted routing weights [{}]"; e));

            public void clusterStateProcessed(String source; ClusterState oldState; ClusterState newState) {


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