JNA not found native methods will be disabled – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch cannot find the Java Native Access (JNA) library, which is used to call native system functions. This could lead to reduced performance or disabled features. To resolve this issue, ensure that the JNA library is correctly installed and the classpath is properly set. If the problem persists, you may need to reinstall or update your Java environment. Also, check your system’s permissions to ensure OpenSearch has access to the required libraries.

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This guide will help you check for common problems that cause the log ” JNA not found. native methods will be disabled. ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: bootstrap.

Log Context

Log “JNA not found. native methods will be disabled.” classname is Natives.java.
We extracted the following from OpenSearch 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
            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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