Failed to get binary value – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to retrieve a binary value from a field. This could be due to the field not existing, the field not being of binary type, or the data being corrupted. To resolve this issue, you can check if the field exists and is of binary type. If it is, ensure that the data is not corrupted. If the field is not of binary type, you need to reindex your data with the correct mapping. If the field does not exist, you need to add it to your index.

This guide will help you check for common problems that cause the log ” Failed to get binary value ” 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 get binary value” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 out.writeBytes(value; 0; valueLength);
 return out.bytes().toBytesRef();
 } catch (IOException e) {
 throw new ElasticsearchException("Failed to get binary value"; e);
 }  }


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