Unexpected failure occurred during decommission status update – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.4-2.9

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Briefly, this error occurs when the system fails to update the decommission status of a node in an OpenSearch cluster. This could be due to network issues, insufficient permissions, or a problem with the node itself. To resolve this issue, you can try the following: 1) Check the network connectivity between the nodes; 2) Verify that the user has the necessary permissions to update the decommission status; 3) Investigate the health and status of the node in question; 4) Restart the node or the entire cluster if necessary.

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This guide will help you check for common problems that cause the log ” unexpected failure occurred during decommission status update ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cluster.

Log Context

Log “unexpected failure occurred during decommission status update” classname is DecommissionService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                logger.info("updated the decommission status to [{}]"; status);

            public void onFailure(Exception e) {
                logger.error("unexpected failure occurred during decommission status update"; e);

    public void startRecommissionAction(final ActionListener listener) {


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