Unexpected failure during current state n – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.1

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 OpenSearch encounters an unexpected issue during a specific operation, which could be due to various reasons such as network issues, hardware failures, or software bugs. To resolve this, you can start by checking the OpenSearch logs for more detailed error messages. If it’s a network issue, ensure that all nodes are reachable. If it’s a hardware issue, check the server’s health. If it’s a software bug, consider updating OpenSearch to the latest version or rolling back to a stable version.

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 ” unexpected failure during [{}]; current state:\n{} ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: routing, cluster.

Log Context

Log “unexpected failure during [{}]; current state:\n{}” classname is BatchedRerouteService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                                pendingRerouteListeners = null;
                        final ClusterState state = clusterService.state();
                        if (logger.isTraceEnabled()) {
                            logger.error(() -> new ParameterizedMessage("unexpected failure during [{}]; current state:\n{}";
                                source; state); e);
                        } else {
                            logger.error(() -> new ParameterizedMessage("unexpected failure during [{}]; current state version [{}]";
                                source; state.version()); e);


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