Classpath System getProperty java class path – 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 required Java classes in the classpath. The classpath is a parameter that tells the JVM where to look for user-defined classes and packages. The error message indicates that the system property “java.class.path” is empty or not correctly set. To resolve this issue, you can: 1) Check your JAVA_HOME environment variable to ensure it’s correctly set. 2) Verify your classpath to ensure it includes the necessary Java classes. 3) If you’re running OpenSearch from a script, ensure the script correctly sets the classpath.

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This guide will help you check for common problems that cause the log ” Classpath: {}”; System.getProperty(“java.class.path ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: .

Log Context

Log “Classpath: {}”; System.getProperty(“java.class.path” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :


    public String getResourcesClasspath() {
        // This will make sure the task is not considered up to date if the resources are changed."Classpath: {}"; System.getProperty("java.class.path"));
        return System.getProperty("java.class.path");

    public void setOutputDir(File outputDir) {


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