Building cluster state with weighted routing weights deleted – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.5-2.9

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Briefly, this error occurs when OpenSearch is trying to build a cluster state but encounters issues due to deleted weighted routing weights. This could be due to a misconfiguration or an issue with the cluster state. To resolve this, you could try to restore the deleted weighted routing weights if possible. Alternatively, you could try to rebuild the cluster state. If the issue persists, it may be necessary to check the OpenSearch logs for more detailed error messages and troubleshoot accordingly.

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

Log Context

Log “building cluster state with weighted routing weights deleted” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :


                mdBuilder.putCustom(WeightedRoutingMetadata.TYPE; weightedRoutingMetadata);
      "building cluster state with weighted routing weights deleted");
                return ClusterState.builder(currentState).metadata(mdBuilder).build();

            public void onFailure(String source; Exception e) {


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