Failed to remove weighted routing metadata from cluster state – 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 delete the weighted routing metadata from the cluster state. This could be due to issues with the cluster state, network connectivity problems, or insufficient permissions. To resolve this, you can try the following: 1) Check and ensure the cluster state is healthy and stable. 2) Verify network connectivity between nodes. 3) Confirm that the user has the necessary permissions to modify the cluster state. 4) Restart the OpenSearch service to refresh the system. Always remember to backup your data before making any significant changes.

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

Log Context

Log “failed to remove weighted routing metadata from cluster state” 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.error("failed to remove weighted routing metadata from cluster state"; e);

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


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