The field name cannot have index = false – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.9-7.1

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Briefly, this error occurs when a field in Elasticsearch is set to “index = false”. This means that the field is not searchable and cannot be used in queries. To resolve this issue, you can change the field’s mapping to “index = true”, which will make it searchable. Alternatively, if the field is not needed for searching, you can remove it from the query. Another solution is to use the “_source” field in your queries, which includes all fields regardless of their “index” setting.

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This guide will help you check for common problems that cause the log ” The field [” + name + “] cannot have index = false ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, index.

Log Context

Log “The field [” + name + “] cannot have index = false” class name is WildcardFieldMapper.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  @Override
 public Builder index(boolean index) {
 if (index == false) {
 throw new MapperParsingException("The field [" + name + "] cannot have index = false");
 }
 return this;
 }  public Builder nullValue(String nullValue) {

 

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