Failed to serialize cluster state for publishing to node – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to serialize the cluster state for publishing to a specific node. This could be due to a network issue, a node failure, or a problem with the cluster state. To resolve this issue, you can try restarting the node, checking the network connection, or investigating the cluster state for any inconsistencies or corruption. If the problem persists, consider increasing the cluster state size limit or upgrading Elasticsearch to a version that handles larger cluster states more efficiently.

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

Log Context

Log “failed to serialize cluster state for publishing to node {}” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 ) {
 } catch (IOException e) {
 throw new ElasticsearchException("failed to serialize cluster state for publishing to node {}"; e; discoveryNode);
 final var newBytes = new ReleasableBytesReference(bytesStream.bytes(); bytesStream);
 "serialized join validation cluster state version [{}] for transport version [{}] with size [{}]";


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