Failed to delete metadata for index – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.4

Briefly, this error occurs when Elasticsearch is unable to delete the metadata for a specific index. This could be due to insufficient permissions, a locked index, or a network issue. To resolve this, you can try the following: 1) Check and adjust the user permissions to ensure they have the necessary rights to delete metadata. 2) Unlock the index if it’s locked. 3) Check your network connection and ensure Elasticsearch cluster is accessible. 4) If the issue persists, consider restarting the Elasticsearch node.

This guide will help you check for common problems that cause the log ” [{}] failed to delete metadata for index [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: metadata, blobstore, delete, repositories, index.

Log Context

Log “[{}] failed to delete metadata for index [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private void deleteIndexMetaDataBlobIgnoringErrors(SnapshotId snapshotId; IndexId indexId) {
        try {
            indexMetaDataFormat.delete(indexContainer(indexId); snapshotId.getUUID());
        } catch (IOException ex) {
            logger.warn(() -> new ParameterizedMessage("[{}] failed to delete metadata for index [{}]";
                snapshotId; indexId.getName()); ex);



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