Internal repository already registered this prevented the registration of – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.1

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Briefly, this error occurs when there’s an attempt to register a repository in OpenSearch that already exists. This could be due to a configuration issue or a script error. To resolve this, you can first check the repository settings to ensure there are no duplicates. If the issue persists, you may need to review your scripts or applications that interact with OpenSearch to ensure they are not trying to create an already existing repository. Lastly, ensure that your OpenSearch version is up-to-date as this could also be a bug that’s fixed in a newer version.

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This guide will help you check for common problems that cause the log ” internal repository [{}][{}] already registered. this prevented the registration of ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: repositories, repository.

Log Context

Log “internal repository [{}][{}] already registered. this prevented the registration of” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

        Repository repository = internalRepositories.computeIfAbsent(name; (n) -> {
            logger.debug("put internal repository [{}][{}]"; name; type);
            return createRepository(metadata; internalTypesRegistry);
        if (type.equals(repository.getMetadata().type()) == false) {
            logger.warn(new ParameterizedMessage("internal repository [{}][{}] already registered. this prevented the registration of " +
                "internal repository [{}][{}]."; name; repository.getMetadata().type(); name; type));
        } else if (repositories.containsKey(name)) {
            logger.warn(new ParameterizedMessage("non-internal repository [{}] already registered. this repository will block the " +
                "usage of internal repository [{}][{}]."; name; metadata.type(); name));


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