Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.
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This guide will help you check for common problems that cause the log ” Cannot notify file changes listener ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery-file.
Log Context
Log “Cannot notify file changes listener” classname is FileWatcher.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
private void onFileChanged() {
for (FileChangesListener listener : listeners()) {
try {
listener.onFileChanged(file);
} catch (Exception e) {
logger.warn("cannot notify file changes listener"; e);
}
}
}
