Loaded all extensions – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.5-2.8

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Briefly, this error occurs when OpenSearch has successfully loaded all the extensions. It’s not an error message but an informational log indicating that all extensions have been loaded correctly. If you’re seeing issues, they’re likely unrelated to this message. To resolve potential issues, ensure your configuration files are correct, check for any other error messages in your logs, and verify that your system resources are sufficient for OpenSearch’s operations.

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This guide will help you check for common problems that cause the log ” Loaded all extensions ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: .

Log Context

Log “Loaded all extensions” classname is ExtensionsManager.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            for (Extension extension : extensions) {
            if (!extensionIdMap.isEmpty()) {
                logger.info("Loaded all extensions");
        } else {
            logger.warn("Extensions.yml file is not present.  No extensions will be loaded.");


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