Briefly, this error occurs when Elasticsearch encounters a numeric field in the HTTP request that it doesn’t expect. This could be due to incorrect data types or malformed JSON in the request body. To resolve this issue, you can: 1) Check the request body for any unexpected numeric fields and correct them. 2) Ensure that the data types in your request match the data types defined in your Elasticsearch index. 3) Validate your JSON before sending the request to ensure it’s correctly formatted.
This guide will help you check for common problems that cause the log ” could not parse http request. unexpected numeric field [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request.
Log Context
Log “could not parse http request. unexpected numeric field [{}]” class name is HttpRequest.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
} else if (token == XContentParser.Token.VALUE_NUMBER) {
if (Field.PORT.match(currentFieldName; parser.getDeprecationHandler())) {
builder.port = parser.intValue();
} else {
throw new ElasticsearchParseException("could not parse http request. unexpected numeric field [{}]";
currentFieldName);
}
} else {
throw new ElasticsearchParseException("could not parse http request. unexpected token [{}]"; token);
}
