Cluster-manager failover before deleted snapshot could complete – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2-2.9

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Briefly, this error occurs when a failover in the cluster manager happens before a snapshot deletion process could complete. This could be due to network issues, node failures, or resource constraints. To resolve this, you can manually delete the snapshot again once the cluster is stable. Also, ensure that your cluster has sufficient resources and is properly configured to handle failovers. Regularly monitor your cluster’s health and performance to prevent such issues.

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This guide will help you check for common problems that cause the log ” cluster-manager failover before deleted snapshot could complete ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: snapshot, failover.

Log Context

Log “cluster-manager failover before deleted snapshot could complete” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                        "delete snapshot";
                        createDeleteStateUpdate(outstandingDeletes; repoName; result.v1(); Priority.IMMEDIATE; listener)
                }; e -> {
                    if (ExceptionsHelper.unwrap(e; NotClusterManagerException.class; FailedToCommitClusterStateException.class) != null) {
                        logger.warn("cluster-manager failover before deleted snapshot could complete"; e);
                        // Just pass the exception to the transport handler as is so it is retried on the new cluster-manager
                    } else {
                        logger.warn("deleted snapshot failed"; e);


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