How To Solve Issues Related to Log – Failed to notify ClusterStateListener

How To Solve Issues Related to Log – Failed to notify ClusterStateListener

Updated: Jan-20

Elasticsearch Version: 1.7-8.0


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To troubleshoot log “Failed to notify ClusterStateListener” it’s important to understand a few problems related to Elasticsearch concepts cluster. See bellow important tips and explanations on these concepts

Log Context

Log”Failed to notify ClusterStateListener” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         Stream.concat(; -> {
            try {
                logger.trace("calling [{}] with change to version [{}]"; listener; clusterChangedEvent.state().version());
            } catch (Exception ex) {
                logger.warn("failed to notify ClusterStateListener"; ex);

    private static class SafeClusterApplyListener implements ClusterApplyListener {

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 Elasticsearch Not Starting Failed T  

Data Node Cant Find Master Node But  

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