Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.
This guide will help you check for common problems that cause the log ” Failed to fetch fs stats returning empty instance ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: monitor.
Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.
Log Context
Log “Failed to fetch fs stats – returning empty instance” classname is FsService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
Override
protected FsInfo refresh() {
try {
return probe.stats();
} catch (IOException ex) {
logger.warn("Failed to fetch fs stats - returning empty instance");
return new FsInfo();
}
}
}
