Failed to parse action unexpected string field – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

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Briefly, this error occurs when Elasticsearch is unable to parse a specific action due to an unexpected string field. This could be due to incorrect data types, incorrect field names, or malformed JSON. To resolve this issue, you can: 1) Check the data types of your fields and ensure they match with your Elasticsearch mappings. 2) Verify the field names in your JSON document and ensure they match with your Elasticsearch mappings. 3) Validate your JSON document to ensure it’s correctly formatted.

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This guide will help you check for common problems that cause the log ” failed to parse [{}] action [{}/{}]. unexpected string field [{}] ” 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 parse [{}] action [{}/{}]. unexpected string field [{}]” class name is LoggingAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } catch (IllegalArgumentException iae) {
 throw new ElasticsearchParseException("failed to parse [{}] action [{}/{}]. unknown logging level [{}]"; TYPE;
 watchId; actionId; parser.text());
 }
 } else {
 throw new ElasticsearchParseException("failed to parse [{}] action [{}/{}]. unexpected string field [{}]"; TYPE;
 watchId; actionId; currentFieldName);
 }
 } else {
 throw new ElasticsearchParseException("failed to parse [{}] action [{}/{}]. unexpected token [{}]"; TYPE; watchId;
 actionId; token);

 

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