Failed to reroute routing table current state n – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to update the routing table, which is responsible for directing search requests to the appropriate shards. This could be due to network issues, node failures, or configuration errors. To resolve this, you can try restarting the nodes, checking the network connectivity, or reviewing the cluster settings. If the issue persists, consider reindexing the data or increasing the cluster’s capacity to handle more requests. Always ensure to backup your data before making significant changes to avoid data loss.

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This guide will help you check for common problems that cause the log ” failed to reroute routing table; 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 “failed to reroute routing table; current state:\n{}” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                if (pendingRerouteListeners == currentListeners) {
                    pendingRerouteListeners = null;
            ClusterState state = clusterService.state();
            logger.warn(() -> new ParameterizedMessage("failed to reroute routing table; current state:\n{}"; state); e);
                new OpenSearchException("delayed reroute [" + reason + "] could not be submitted"; e)


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