Field name of type CONTENT TYPE – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.6-7.9

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Briefly, this error occurs when Elasticsearch encounters a field of an unexpected type during indexing or querying. This could be due to a mismatch between the data type defined in the mapping and the actual data type of the field. To resolve this, you can either modify the data type in the mapping to match the actual data type of the field, or convert the data type of the field to match the mapping. Additionally, ensure that the field name is correctly spelled and exists in your index.

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This guide will help you check for common problems that cause the log ” field ” + name() + ” of type [” + CONTENT_TYPE + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “field ” + name() + ” of type [” + CONTENT_TYPE + “] ” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public Query existsQuery(QueryShardContext context) {
 if (hasDocValues()) {
 return new DocValuesFieldExistsQuery(name());
 } else {
 throw new QueryShardException(context; "field  " + name() + " of type [" + CONTENT_TYPE + "] " +
 "has no doc values and cannot be searched");
 }  @Override


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