Could not parse transform for watch failed to parse must be a – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when Elasticsearch is unable to parse a transform for a watch due to incorrect or missing syntax. The transform is a script that processes the data before the action is executed. To resolve this, ensure that the transform script is correctly written and formatted. Check for any missing or misplaced brackets, commas, or quotation marks. Also, verify that the correct data types are used. If the script is complex, consider breaking it down into simpler parts for easier debugging.

This guide will help you check for common problems that cause the log ” could not parse [{}] transform for watch [{}]. failed to parse [{}]. must be a ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, search.

Log Context

Log “could not parse [{}] transform for watch [{}]. failed to parse [{}]. must be a” class name is SearchTransform.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 timeout = WatcherDateTimeUtils.parseTimeValue(parser; Field.TIMEOUT_HUMAN.toString());
 } else if (Field.DYNAMIC_NAME_TIMEZONE.match(currentFieldName; parser.getDeprecationHandler())) {
 if (token == XContentParser.Token.VALUE_STRING) {
 dynamicNameTimeZone = DateUtils.of(parser.text());
 } else {
 throw new ElasticsearchParseException("could not parse [{}] transform for watch [{}]. failed to parse [{}]. must be a" +
 " string value (e.g. 'UTC' or '+01:00')."; TYPE; watchId; currentFieldName);
 }
 } else {
 throw new ElasticsearchParseException("could not parse [{}] transform for watch [{}]. unexpected field [{}]"; TYPE;
 watchId; currentFieldName);

 

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