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

Get an Elasticsearch Check-Up

Check if your ES issues are caused from misconfigured settings
(Free 2 min process)


Last update: Jan-20

Elasticsearch Error Guide In Page Navigation (click to jump) :

Troubleshooting Background – start here to get the full picture       
Related Issues – selected resources on related issues  
Log Context – usefull for experts
About Opster – offering a diffrent approach to troubleshoot Elasticsearch

Check Your Elasticsearch Settings for Painfull Mistakes 

Troubleshooting background

To troubleshoot Elasticsearch log “JNA not found. native methods and handlers will be disabled.” it’s important to know common problems related to Elasticsearch concepts: bootstrap. See below-detailed explanations complete with common problems, examples and useful tips.

To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

1. JNA not found. native methods will be disabled. java.lang.ClassNotFoundException: com.sun.jna.Native – Stats : ♥ 3.60 K  Ι √ 3

2. Unable to load JNA native support library Elasticsearch 6.x – Stats : ♥ 5.82 K  Ι √    6

Log Context

Log ”JNA not found. native methods and handlers will be disabled.” classname is
We have extracted the following from Elasticsearch source code to get an in-depth context :

         if (Constants.WINDOWS) {
            try {
                logger.debug("windows/Kernel32 library loaded");
            } catch (NoClassDefFoundError e) {
                logger.warn("JNA not found. native methods and handlers will be disabled.");
            } catch (UnsatisfiedLinkError e) {
                logger.warn("unable to link Windows/Kernel32 library. native methods and handlers will be disabled.");

About Opster

Incorporating deep knowledge and broad history of Elasticsearch issues. Opster’s solution identifies and predicts root causes of Elasticsearch problems, provides recommendations and can automatically perform various actions to manage, troubleshoot and prevent issues

Learn more: Glossary | Blog| Troubleshooting guides | Error Repository

Need help with any Elasticsearch issue ? Contact Opster

Did this page help you?