Failed to parse action /. unexpected string field – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

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.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “failed to parse [{}] action [{}/{}]. unexpected string field [{}]”classname  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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