Failed to serialize cluster state before publishing it to node – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.17

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Briefly, this error occurs when Elasticsearch is unable to serialize the cluster state before publishing it to a node. This could be due to a lack of resources, network issues, or a problem with the cluster state. To resolve this issue, you can try increasing the resources allocated to Elasticsearch, checking your network connection, or investigating the cluster state for any inconsistencies or corruption. Additionally, ensure that all nodes in the cluster are running the same version of Elasticsearch, as version mismatches can cause serialization issues.

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This guide will help you check for common problems that cause the log ” failed to serialize cluster_state before publishing it to node {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: node, discovery.

Log Context

Log “failed to serialize cluster_state before publishing it to node {}” classname is PublishClusterStateAction.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        if (bytes == null) {
            try {
                bytes = serializeFullClusterState(clusterState; node.getVersion());
                serializedStates.put(node.getVersion(); bytes);
            } catch (Exception e) {
                logger.warn(() -> new ParameterizedMessage("failed to serialize cluster_state before publishing it to node {}"; node); e);
                sendingController.onNodeSendFailed(node; e);
                return;
            }
        }
        sendClusterStateToNode(clusterState; bytes; node; publishTimeout; sendingController; false; serializedStates);

 

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