Failed to receive packet throttling – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch is unable to manage the data flow due to network congestion or high data transfer rates, leading to packet loss. This can be caused by insufficient resources or improper configuration. To resolve this issue, you can: 1) Increase the network bandwidth or upgrade the hardware to handle higher data transfer rates. 2) Adjust the Elasticsearch configuration to optimize data flow. 3) Monitor and manage the data flow to prevent network congestion. 4) Check for any network issues that might be causing packet loss.

This guide will help you check for common problems that cause the log ” failed to receive packet; throttling… ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery, discovery-multicast and Plugin.

Log Context

Log “failed to receive packet; throttling…” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (running) {
                                    if (multicastSocket.isClosed()) {
                                        logger.warn("multicast socket closed while running; restarting...");
                                        multicastSocket = buildMulticastSocket(config);
                                    } else {
                                        logger.warn("failed to receive packet; throttling..."; e);


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