Log JNA not found. native methods will be disabled. – How To Solve Related Issues


Log JNA not found. native methods will be disabled. – How To Solve Related Issues

Opster Team

Jan-20, Version: 1.7-8.0

 

Before you begin reading this guide, we recommend you try running the 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 ” JNA not found. native methods will be disabled. ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: bootstrap.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log context

Log “JNA not found. native methods will be disabled.” classname is Natives.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             // load one of the main JNA classes to see if the classes are available. this does not ensure that all native
            // libraries are available; only the ones necessary by JNA to function
            Class.forName("com.sun.jna.Native");
            v = true;
        } catch (ClassNotFoundException e) {
            logger.warn("JNA not found. native methods will be disabled."; e);
        } catch (UnsatisfiedLinkError e) {
            logger.warn("unable to load JNA native support library; native methods will be disabled."; e);
        }
        JNA_AVAILABLE = v;
    }




 

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