Cannot update doc mapping because clusterState == null – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.3-8.9

Briefly, this error occurs when Elasticsearch tries to update the document mapping, but the cluster state is null. This could be due to a misconfiguration or a network issue that prevents the node from communicating with the cluster. To resolve this issue, you can try restarting the Elasticsearch node, checking the cluster health, or verifying the network connectivity. If the problem persists, you may need to check your Elasticsearch configuration for any errors or inconsistencies.

In addition we recommend you run the Elasticsearch Template Optimizer to fix problems in your data modeling.

It will analyze your templates to detect issues and improve search performance, reduce indexing bottlenecks and optimize storage utilization. The Template Optimizer is free and requires no installation.

Log Context

Log “Cannot update doc mapping because clusterState == null” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            ActionListener.wrap(response -> listener.onResponse(new PutDatafeedAction.Response(response.v1())); listener::onFailure)

        CheckedConsumer validationOk = ok -> {
            if (clusterState == null) {
                logger.warn("Cannot update doc mapping because clusterState == null");


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