Briefly, this error occurs when Elasticsearch’s Watcher feature encounters a parsing issue with a condition in a watch. The error suggests that an empty object was expected, but a different object was found. To resolve this, you should review the watch definition and ensure that the condition field is correctly formatted. If the condition is not required, you can remove it or ensure it’s an empty object. Also, validate the JSON syntax of your watch definition to avoid parsing errors.
This guide will help you check for common problems that cause the log ” could not parse [{}] condition for watch [{}]. expected an empty object but found [{}] ” 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 [{}]. expected an empty object but found [{}]” class name is NeverCondition.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
private NeverCondition() { } public static NeverCondition parse(String watchId; XContentParser parser) throws IOException {
if (parser.currentToken() != XContentParser.Token.START_OBJECT) {
throw new ElasticsearchParseException("could not parse [{}] condition for watch [{}]. expected an empty object but found [{}]";
TYPE; watchId; parser.currentName());
}
XContentParser.Token token = parser.nextToken();
if (token != XContentParser.Token.END_OBJECT) {
throw new ElasticsearchParseException("could not parse [{}] condition for watch [{}]. expected an empty object but found [{}]";
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