Unknown context type type – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

Briefly, this error occurs when Elasticsearch encounters an unknown context type in the mapping of a context suggester. This could be due to a typo or unsupported context type. To resolve this issue, you should verify the context type in your mapping. Ensure it’s either ‘category’ or ‘geo’. If it’s a custom type, make sure it’s properly defined and supported. Also, check for any spelling or syntax errors in your mapping.

This guide will help you check for common problems that cause the log ” unknown context type[” + type + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “unknown context type[” + type + “]” class name is ContextMappings.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 case GEO:
 contextMapping = GeoContextMapping.load(name; contextConfig);
 throw new ElasticsearchParseException("unknown context type[" + type + "]");
 MappingParser.checkNoRemainingFields(name; contextConfig);
 return contextMapping;


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