Failed to parse mapping definition – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

Briefly, this error occurs when Elasticsearch encounters an issue while trying to parse the mapping definition. This could be due to incorrect syntax, unsupported field types, or invalid parameters in the mapping. To resolve this, you should first check the mapping definition for any syntax errors. Ensure that all field types are supported and all parameters are valid. If the error persists, try to simplify the mapping definition by removing complex or nested fields. Lastly, ensure that the Elasticsearch version you’re using supports the features used in your mapping definition.

This guide will help you check for common problems that cause the log ” failed to parse mapping definition ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: mapping, index.

Log Context

Log “failed to parse mapping definition” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 try (
 XContentParser parser = XContentType.JSON.xContent().createParser(xContentRegistry; LoggingDeprecationHandler.INSTANCE; source)
 ) {
 root = parser.mapOrdered();
 } catch (Exception e) {
 throw new MapperParsingException("failed to parse mapping definition"; e);
 return extractMapping(type; root);
 }  /**


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