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Briefly, this error occurs when OpenSearch is trying to load extensions but can’t find any, hence the empty brackets {}. This could be due to missing or incorrectly configured extensions. To resolve this issue, you can check if the required extensions are properly installed and configured. If they are missing, install them and ensure they are correctly configured. If the extensions are not needed, you can ignore this message as it’s more of an informational message rather than an error.
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This guide will help you check for common problems that cause the log ” Loading extensions : {} ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: .
Log Context
Log “Loading extensions : {}” classname is ExtensionsManager.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
/*
* Load and populate all extensions
*/
protected void discover() throws IOException {
logger.info("Loading extensions : {}"; extensionsPath);
if (!FileSystemUtils.isAccessibleDirectory(extensionsPath; logger)) {
return;
}
List extensions = new ArrayList();
