Failed to fetch fs stats returning empty instance – How to solve related issues

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Failed to fetch fs stats returning empty instance – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

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();
            }
        }
    }




 

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