Meta can t have more than 5 entries but got meta size on field name – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.9

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Briefly, this error occurs when the number of metadata fields in an Elasticsearch index exceeds the maximum limit of 5. This limit is set to prevent excessive use of memory. To resolve this issue, you can either reduce the number of metadata fields in your index or increase the limit by adjusting the ‘index.mapping.meta_fields.limit’ setting in the Elasticsearch configuration. However, be cautious as increasing the limit may lead to higher memory usage.

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This guide will help you check for common problems that cause the log ” [meta] can’t have more than 5 entries; but got ” + meta.size() + ” on field [” + name + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “[meta] can’t have more than 5 entries; but got ” + meta.size() + ” on field [” + name + “]” class name is TypeParsers.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 );
 }
 @SuppressWarnings("unchecked")
 Map meta = (Map) metaObject;
 if (meta.size() > 5) {
 throw new MapperParsingException("[meta] can't have more than 5 entries; but got " + meta.size() + " on field [" + name + "]");
 }
 for (String key : meta.keySet()) {
 if (key.codePointCount(0; key.length()) > 20) {
 throw new MapperParsingException(
 "[meta] keys can't be longer than 20 chars; but got [" + key + "] for field [" + name + "]"

 

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