Can not be imported as a dangling index as there is already another index – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.15

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch tries to import an index that is already existing in the system. This is often due to a conflict between the index names. To resolve this issue, you can either delete the existing index if it’s no longer needed or rename the index you’re trying to import. Another solution is to use the reindex API to copy the contents of the dangling index to a new index with a different name.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” [{}] can not be imported as a dangling index; as there is already another index ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, dangling.

Log Context

Log “[{}] can not be imported as a dangling index; as there is already another index ” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    void cleanupAllocatedDangledIndices(Metadata metadata) {
        for (Index index : danglingIndices.keySet()) {
            final IndexMetadata indexMetadata = metadata.index(index);
            if (indexMetadata != null && indexMetadata.getIndex().getName().equals(index.getName())) {
                if (indexMetadata.getIndex().getUUID().equals(index.getUUID()) == false) {
                    logger.warn("[{}] can not be imported as a dangling index; as there is already another index " +
                        "with the same name but a different uuid. local index will be ignored (but not deleted)"; index);
                } else {
                    logger.debug("[{}] no longer dangling (created); removing from dangling list"; index);


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch