Check index failure – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.14-8.9

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 is unable to access or read an index due to reasons like incorrect index name, corrupted index, insufficient permissions, or network issues. To resolve this, you can verify the index name and its existence, check the health of the index, ensure the user has appropriate permissions, or troubleshoot network connectivity. If the index is corrupted, you may need to restore it from a backup.

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 ” check index [failure] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, shard.

Log Context

Log “check index [failure]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            IOException corrupt = null;
            final MetadataSnapshot metadata;
            try {
                metadata = snapshotStoreMetadata();
            } catch (IOException e) {
                logger.warn("check index [failure]"; e);
                throw e;
            final List checkedFiles = new ArrayList(metadata.size());
            for (Map.Entry entry : metadata.fileMetadataMap().entrySet()) {
                try {


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?