Unknown context type type – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

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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.

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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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