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 ” 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.
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();
}
}
}
Find & fix Elasticsearch problems
