Failed to refresh-mapping in cluster state – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.11

Briefly, this error occurs when Elasticsearch is unable to update the mapping in the cluster state. This could be due to a variety of reasons such as network issues, insufficient resources, or a problem with the cluster state. To resolve this issue, you can try restarting the Elasticsearch cluster, ensuring there are sufficient resources available, or checking the network connectivity. If the problem persists, you may need to investigate the cluster state and mappings for any inconsistencies or errors.

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 “[{}] failed to refresh-mapping in cluster state” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        builder.putMapping(new MappingMetadata(mapper));
        } catch (Exception e) {
            logger.warn(() -> new ParameterizedMessage("[{}] failed to refresh-mapping in cluster state"; index); e);
        return dirty;



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