Missing explanation description – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to find a description for an explanation in a query. This could be due to a malformed query or a bug in the system. To resolve this issue, you can try the following: 1) Review and correct your query syntax; 2) Update Elasticsearch to the latest version to fix potential bugs; 3) If the error persists, consider contacting Elasticsearch support or community forums for further assistance.

This guide will help you check for common problems that cause the log ” missing explanation description ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “missing explanation description” class name is SearchHit.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (value == null) {
 throw new ParsingException(parser.getTokenLocation(); "missing explanation value");
 if (description == null) {
 throw new ParsingException(parser.getTokenLocation(); "missing explanation description");
 return Explanation.match(value; description; details);
 }  private static void buildExplanation(XContentBuilder builder; Explanation explanation) throws IOException {


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