Failed to analyze value fieldValue of field fieldName – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch fails to analyze a specific field value during indexing or searching. This could be due to incorrect data type, analyzer issues, or malformed data. To resolve this, ensure that the data type of the field value matches the mapping. If you’re using a custom analyzer, check its configuration for errors. Also, validate the data to ensure it’s correctly formatted and doesn’t contain any illegal characters or values that exceed the field’s limit.

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This guide will help you check for common problems that cause the log ” Failed to analyze value [” + fieldValue + “] of field [” + fieldName + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Failed to analyze value [” + fieldValue + “] of field [” + fieldName + “]” class name is CategorizationAnalyzer.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 tokens.add(term.toString());
 }
 }
 stream.end();
 } catch (IOException e) {
 throw new ElasticsearchException("Failed to analyze value [" + fieldValue + "] of field [" + fieldName + "]"; e);
 }
 return tokens;
 }  /**

 

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