Version of mappings for not found recreating – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch cannot find the mapping version for a specific index. Mappings define the types of data in your index and how they are stored and indexed. If they are not found, Elasticsearch may attempt to recreate them. To resolve this issue, you can 1) Ensure that the mappings are correctly defined and saved in your Elasticsearch setup. 2) Check if the index exists and if it’s accessible. 3) If the index was deleted, you may need to recreate it with the correct mappings. 4) Ensure that your Elasticsearch cluster is running and healthy.

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 “Version of mappings for [{}] not found; recreating” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    Map meta = (Map) metadata.sourceAsMap().get("_meta");
                    if (meta != null) {
                        String versionString = (String) meta.get("version");
                        if (versionString == null) {
                  "Version of mappings for [{}] not found; recreating"; index);

                        Version mappingVersion = Version.fromString(versionString);


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