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Briefly, this error occurs when an Elasticsearch request is made without a required body. This typically happens when you’re trying to perform an operation that needs additional information, like creating or updating a document. To resolve this issue, ensure that your request includes a valid JSON body with all the necessary information. If you’re using a tool or library to make the request, check its documentation to ensure you’re using it correctly. Also, ensure that the content type of your request is set to ‘application/json’.
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This guide will help you check for common problems that cause the log ” request body is required ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest, request.
Log Context
Log “request body is required” class name is RestRequest.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
/**
* @return content of the request body or throw an exception if the body or content type is missing
*/
public final BytesReference requiredContent() {
if (hasContent() == false) {
throw new ElasticsearchParseException("request body is required");
} else if (xContentType.get() == null) {
throw new IllegalStateException("unknown content type");
}
return content();
}
