Failure updating cluster state – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is unable to update the cluster state due to issues like network problems, insufficient resources, or node failures. To resolve this, you can check the network connectivity between nodes, ensure there are enough resources (CPU, memory, disk space) for OpenSearch to operate, and verify the health of all nodes in the cluster. If a node is down, it may need to be restarted or replaced. Also, check the OpenSearch logs for more specific error messages that can help pinpoint the problem.

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This guide will help you check for common problems that cause the log ” failure updating cluster state ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cluster, repositories.

Log Context

Log “failure updating cluster state” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            repositories = Collections.unmodifiableMap(builder);
        } catch (Exception ex) {
            assert false : new AssertionError(ex);
            logger.warn("failure updating cluster state "; ex);

     * Gets the {@link RepositoryData} for the given repository.


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