Failed to encode ranges – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to encode the range values specified in a range query. This could be due to incorrect data types, incorrect range format, or a bug in the Elasticsearch version you’re using. To resolve this issue, ensure that the range values match the field’s data type. If the error persists, try updating Elasticsearch to the latest version or consider reindexing your data.

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

Log Context

Log “failed to encode ranges” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public BytesRef binaryValue() {
 try {
 return rangeType.encodeRanges(ranges);
 } catch (IOException e) {
 throw new ElasticsearchException("failed to encode ranges"; e);