Failed to validate incoming join request from node – How to solve related issues

Opster Team

Feb-21, Version: 1.7-8.0

To understand why Elasticsearch failed to validate incoming join requests from certain nodes, and what impact this will have on your system, you should run the Elasticsearch Error Check-Up. It’ll give you a better grasp of what is happening in your system and assist you in resolving issues.

This guide will help you check for common problems that cause the log “Failed to validate incoming join request from node” to appear. It’s important to understand the issues related to it, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: discovery, join, node and request.

Log Context

Log “Failed to validate incoming join request from node [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             // validate the join request; will throw a failure if it fails; which will get back to the
            // node calling the join request
            try {
                membership.sendValidateJoinRequestBlocking(node; state; joinTimeout);
            } catch (Exception e) {
                logger.warn(() -> new ParameterizedMessage("failed to validate incoming join request from node [{}]"; node);
                callback.onFailure(new IllegalStateException("failure when sending a validation request to node"; e));
            nodeJoinController.handleJoinRequest(node; callback);


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