Log Send message failed channel: – How To Solve Related Issues

Log Send message failed channel: – How To Solve Related Issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many log errors (free and no installation required)


This guide will help you check for common problems that cause the log “Send message failed channel:” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: handler.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log”Send message failed [channel: {}]” classname is OutboundHandler.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             closeAndCallback(() -> listener.onResponse(v));

        protected void innerOnFailure(Exception e) {
            logger.warn(() -> new ParameterizedMessage("send message failed [channel: {}]"; channel); e);
            closeAndCallback(() -> listener.onFailure(e));

        private void closeAndCallback(Runnable runnable) {
            Releasables.close(optionalReleasable; runnable::run);


Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Problem Communicating Within Nodes  

Send Message Failed From Dedicated  


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