Briefly, this error occurs when Elasticsearch tries to parse a condition for a watch but encounters an unknown condition type. This usually happens when the condition type specified in the watch definition is not recognized by Elasticsearch. To resolve this issue, you should verify the condition type in your watch definition. Make sure it is one of the condition types supported by Elasticsearch, such as ‘compare’, ‘range’, ‘script’, or ‘always’. If the condition type is custom, ensure that the corresponding plugin is properly installed and loaded.
This guide will help you check for common problems that cause the log ” could not parse condition for watch [{}]. unknown condition type [{}] ” 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 condition for watch [{}]. unknown condition type [{}]” class name is ConditionRegistry.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
throw new ElasticsearchParseException("could not parse condition for watch [{}]. invalid definition. expected a field " +
"indicating the condition type; but found"; watchId; token);
} else {
factory = factories.get(type);
if (factory == null) {
throw new ElasticsearchParseException("could not parse condition for watch [{}]. unknown condition type [{}]";
watchId; type);
}
condition = factory.parse(clock; watchId; parser);
}
}
