How To Solve Issues Related to Log – Cannot notify file changes listener

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Troubleshooting background

To troubleshoot Elasticsearch log “Cannot notify file changes listener” it’s important to know common problems related to Elasticsearch concepts: discovery-file. See below-detailed explanations complete with common problems, examples and useful tips.

To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

1. unable to compile groovy – elasticsearch – Stats : ♥ 0.95 K  Ι √ –

2. Cannot Notify File Changes Listener      

Log Context

Log ”Cannot notify file changes listener” classname is
We have extracted the following from Elasticsearch source code to get an in-depth context :

         private void onFileChanged() {
            for (FileChangesListener listener : listeners()) {
                try {
                } catch (Exception e) {
                    logger.warn("cannot notify file changes listener"; e);


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