Briefly, this error occurs when Elasticsearch tries to execute a bulk request for monitoring purposes, but the request body is missing. This could be due to a malformed request or an issue with the monitoring system. To resolve this, ensure that the bulk request is correctly formatted with the necessary body content. Also, check the monitoring system to ensure it’s properly configured to send the correct requests. If the issue persists, consider debugging the request to identify any potential issues.
This guide will help you check for common problems that cause the log ” no body content for monitoring bulk request ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest, bulk, request, plugin.
Overview
In Elasticsearch, when using the Bulk API it is possible to perform many write operations in a single API call, which increases the indexing speed. Using the Bulk API is more efficient than sending multiple separate requests. This can be done for the following four actions:
- Index
- Update
- Create
- Delete
Examples
The bulk request below will index a document, delete another document, and update an existing document.
POST _bulk
{ "index" : { "_index" : "myindex", "_id" : "1" } }
{ "field1" : "value" }
{ "delete" : { "_index" : "myindex", "_id" : "2" } }
{ "update" : {"_id" : "1", "_index" : "myindex"} }
{ "doc" : {"field2" : "value5"} }Notes
- Bulk API is useful when you need to index data streams that can be queued up and indexed in batches of hundreds or thousands, such as logs.
- There is no correct number of actions or limits to perform on a single bulk call, but you will need to figure out the optimum number by experimentation, given the cluster size, number of nodes, hardware specs etc.
Log Context
Log “no body content for monitoring bulk request” class name is RestMonitoringBulkAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
if (Strings.isEmpty(intervalAsString)) {
throw new IllegalArgumentException("no [" + INTERVAL + "] for monitoring bulk request");
} if (false == request.hasContentOrSourceParam()) {
throw new ElasticsearchParseException("no body content for monitoring bulk request");
} final MonitoredSystem system = MonitoredSystem.fromSystem(id);
if (isSupportedSystemVersion(system; version) == false) {
throw new IllegalArgumentException(
