Briefly, this error occurs when Elasticsearch receives an HTTP request that it cannot parse due to an unexpected token. This usually happens when the request body contains invalid JSON. To resolve this issue, you should first check the JSON syntax in your HTTP request. Make sure that all brackets, commas, and quotation marks are correctly placed. If the syntax is correct, check if the Elasticsearch version you’re using supports the features used in your request. Lastly, ensure that the HTTP method (GET, POST, etc.) is appropriate for your request.
This guide will help you check for common problems that cause the log ” could not parse http request. unexpected token [{}] ” 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 token [{}]” class name is HttpRequest.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
"could not parse http request. unexpected numeric field [{}]";
currentFieldName
);
}
} else {
throw new ElasticsearchParseException("could not parse http request. unexpected token [{}]"; token);
}
} if (builder.host == null) {
throw new ElasticsearchParseException(
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