Reloading search analyzers – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.3-8.9

Briefly, this error occurs when Elasticsearch is trying to reload search analyzers, which are used to convert text into tokens or terms that are added to the inverted index for searching. This could be due to a change in the analyzer configuration or an issue with the analyzer itself. To resolve this, ensure that the analyzer configuration is correct and compatible with your Elasticsearch version. If the problem persists, consider restarting Elasticsearch or reindexing your data. Also, check for any underlying issues such as insufficient memory or disk space that could be causing the reload to fail.

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Log Context

Log “reloading search analyzers” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    public boolean isMultiField(String field) {
        return mappingLookup().isMultiField(field);

    public synchronized List reloadSearchAnalyzers(AnalysisRegistry registry) throws IOException {"reloading search analyzers");
        // TODO this should bust the cache somehow. Tracked in
        return indexAnalyzers.reload(registry; indexSettings);