Unexpected error creating default query – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-6.8

Briefly, this error occurs when Elasticsearch fails to create a default query due to issues like incorrect query syntax, missing or incorrect field names, or data type mismatches. To resolve this, ensure your query syntax is correct and all field names exist in your index. Also, check if the data types in your query match those in your index. If you’re using a custom analyzer, ensure it’s properly configured. Lastly, check your Elasticsearch logs for more specific error details.

This guide will help you check for common problems that cause the log ” Unexpected error creating default query ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, query.

Log Context

Log “Unexpected error creating default query” classname is QueryProvider.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        try {
            QueryBuilder parsedQuery = QueryBuilders.matchAllQuery();
            Map query = XContentObjectTransformer.queryBuilderTransformer(NamedXContentRegistry.EMPTY).toMap(parsedQuery);
            return new QueryProvider(query; parsedQuery; null);
        } catch (IOException ex) {
            logger.error("Unexpected error creating default query"; ex);
            throw new ElasticsearchException("Unexpected error creating default query"; ex);

    static QueryProvider fromXContent(XContentParser parser; boolean lenient) throws IOException {


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