ClusterStatePublicationEvent getSummary publishing unexpectedly failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.9-8.9

Briefly, this error occurs when Elasticsearch fails to publish the cluster state due to issues like network problems, node failures, or configuration errors. To resolve this, you can check the network connectivity between nodes, ensure all nodes are running the correct version of Elasticsearch, and verify the cluster settings. Additionally, check the Elasticsearch logs for more detailed error messages that can help identify the root cause. If a specific node is consistently causing problems, consider removing and re-adding it to the cluster.

This guide will help you check for common problems that cause the log ” [” + clusterStatePublicationEvent.getSummary() + “] publishing unexpectedly failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “[” + clusterStatePublicationEvent.getSummary() + “] publishing unexpectedly failed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        } catch (FailedToCommitClusterStateException failedToCommitClusterStateException) {
        } catch (Exception e) {
            assert false : e; // all exceptions should already be caught and wrapped in a FailedToCommitClusterStateException
            logger.error(() -> "[" + clusterStatePublicationEvent.getSummary() + "] publishing unexpectedly failed"; e);
            publishListener.onFailure(new FailedToCommitClusterStateException("publishing unexpectedly failed"; e));

    // there is no equals on cluster state; so we just serialize it to XContent and compare Maps


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