Master failure notification was rejected it s highly likely the node is shutting down – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.3

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.

Briefly, this error occurs when a node in the OpenSearch cluster is in the process of shutting down and cannot accept any more master failure notifications. This could be due to a planned shutdown or an unexpected issue causing the node to fail. To resolve this, you can restart the node if it was an unplanned shutdown. If it’s a planned shutdown, ensure that the node is properly removed from the cluster before shutting down. Also, check the cluster’s health and rebalance the load if necessary. Lastly, consider increasing the node’s resources if it’s frequently shutting down due to high load.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” master failure notification was rejected; it’s highly likely the node is shutting down ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: master, discovery, node.

Log Context

Log “master failure notification was rejected; it’s highly likely the node is shutting down” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                    for (Listener listener : listeners) {
                        listener.onMasterFailure(masterNode; cause; reason);
            } catch (OpenSearchRejectedExecutionException e) {
                logger.error("master failure notification was rejected; it's highly likely the node is shutting down"; e);
            stop("master failure; " + reason);


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch