Could not parse trigger event for for watch . expected trigger type string – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” could not parse trigger event for for watch . expected trigger type string ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.


Log Context

Log “could not parse trigger event for [{}] for watch [{}]. expected trigger type string”classname  is TriggerService.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

public TriggerEvent parseTriggerEvent(String watchId; String context; XContentParser parser) throws IOException {
 XContentParser.Token token = parser.currentToken();
 assert token == XContentParser.Token.START_OBJECT;
 token = parser.nextToken();
 if (token != XContentParser.Token.FIELD_NAME) {
 throw new ElasticsearchParseException("could not parse trigger event for [{}] for watch [{}]. expected trigger type string " +
 "field; but found [{}]"; context; watchId; token);
 }
 String type = parser.currentName();
 token = parser.nextToken();
 if (token != XContentParser.Token.START_OBJECT) {

 

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