Log unable to lock JVM memory – How To Solve Related Issues



Log unable to lock JVM memory – How To Solve Related Issues

Opster Team

Feb-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 causing many log errors (free and no installation required)

 

This guide will help you check for common problems that cause the log “unable to lock JVM memory” 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, memory.


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 discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log”Unable to lock JVM memory (ENOMEM).” classname is JNANatives.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             return;
        }

        if (errno != Integer.MIN_VALUE) {
            if (errno == JNACLibrary.ENOMEM && System.getProperty("os.name").toLowerCase(Locale.ROOT).contains("linux")) {
                logger.warn("Unable to lock JVM memory (ENOMEM)."
                        + " This can result in part of the JVM being swapped out."
                        + " Increase RLIMIT_MEMLOCK (ulimit).");
            } else if (!System.getProperty("os.name").toLowerCase(Locale.ROOT).contains("mac")) {
                // OS X allows mlockall to be called; but always returns an error
                logger.warn("Unknown mlockall error " + errno);




 

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Unable to lock JVM Memory: error=12, reason=Cannot allocate memory – Elasticsearch 6.2.4 -views 6.34 K ,score 5

   

 

About Opster

Opster line of products and support services detects, prevents, optimizes and automates everything needed to manage mission-critical Elasticsearch.

Find Configuration Errors

Analyze Now