Exception during single stale index delete – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch attempts to delete an index that is stale (outdated or no longer in use) and encounters an issue. This could be due to insufficient permissions, a network issue, or the index being locked or in use. To resolve this, ensure that the user has the necessary permissions to delete indices. Check the network connectivity between the nodes. Also, ensure that the index is not being used or locked by another process. If the issue persists, consider restarting the OpenSearch service.

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

Log Context

Log “[{}] Exception during single stale index delete” classname is BlobStoreRepository.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                } catch (Exception e) {
                    assert false : e;
                    logger.warn(new ParameterizedMessage("[{}] Exception during single stale index delete"; metadata.name()); e);

                executeOneStaleIndexDelete(staleIndicesToDelete; remoteStoreLockManagerFactory; listener);
                return deleteResult;


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