Error sending cluster state to – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch has trouble sending the cluster state to a node. This could be due to network issues, node failure, or the node being overwhelmed with requests. To resolve this, you can check the network connectivity between nodes, ensure the node is functioning properly, or scale up the node’s resources. Additionally, you can also check the cluster’s health and logs for more detailed information about the issue.

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

Log Context

Log “error sending cluster state to {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            } catch (Exception e) {
                assert false : e;
                logger.warn(() -> new ParameterizedMessage("error sending cluster state to {}"; destination); e);



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