Briefly, this error occurs when Elasticsearch is unable to monitor a specific file for changes, due to issues like incorrect file path, insufficient permissions, or the file not existing. To resolve this, ensure the file path in the setting is correct, the file exists, and Elasticsearch has the necessary permissions to access and watch the file. If the file is on a network drive, ensure the network connection is stable. Also, check if the file system watching service is enabled and properly configured in your operating system.
This guide will help you check for common problems that cause the log ” Failed to watch file [{}] (from setting [{}]) ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “Failed to watch file [{}] (from setting [{}])” class name is WildcardServiceProviderResolver.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
});
try {
resourceWatcherService.add(fileWatcher);
} catch (IOException e) {
throw new ElasticsearchException("Failed to watch file [{}] (from setting [{}])";
e; path.toAbsolutePath(); FILE_PATH_SETTING.getKey());
}
return resolver;
}
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