Can only use wildcard queries on keyword and text fields – not on – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.8

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Briefly, this error occurs when a wildcard query is used on a field type that doesn’t support it. Elasticsearch only supports wildcard queries on keyword and text fields. To resolve this issue, you can either change the field type to keyword or text if possible, or use a different type of query that is supported by the current field type. Alternatively, you can create a keyword or text sub-field for the current field and perform the wildcard query on that sub-field.

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This guide will help you check for common problems that cause the log ” Can only use wildcard queries on keyword and text fields – not on [ ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “Can only use wildcard queries on keyword and text fields – not on [” class name is MappedFieldType.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  public Query wildcardQuery(String value;
 @Nullable MultiTermQuery.RewriteMethod method;
 QueryShardContext context) {
 throw new QueryShardException(context; "Can only use wildcard queries on keyword and text fields - not on [" + name
 + "] which is of type [" + typeName() + "]");
 }  public Query regexpQuery(String value; int flags; int maxDeterminizedStates; @Nullable MultiTermQuery.RewriteMethod method;
 QueryShardContext context) {

 

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