Briefly, this error occurs when Elasticsearch is unable to parse the input for a watch because it expects a string value but is receiving a different data type. This could be due to incorrect formatting or data type mismatch in the input. To resolve this issue, you should check the input data for the watch and ensure it is in the correct format and data type. If the input is coming from an external source, you may need to add a data transformation step to convert it to a string before passing it to the watch.
This guide will help you check for common problems that cause the log ” could not parse [{}] input for watch [{}]. expected a string value as ” 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 [{}] input for watch [{}]. expected a string value as” class name is HttpInput.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
extract = new HashSet<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
if (token == XContentParser.Token.VALUE_STRING) {
extract.add(parser.text());
} else {
throw new ElasticsearchParseException("could not parse [{}] input for watch [{}]. expected a string value as " +
"an [{}] item but found [{}] instead"; TYPE; watchId; currentFieldName; token);
}
}
} else {
throw new ElasticsearchParseException("could not parse [{}] input for watch [{}]. unexpected array field [{}]"; TYPE;
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