Briefly, this error occurs when you try to delete a snapshot in Elasticsearch while another snapshot operation is still running. Elasticsearch doesn’t allow simultaneous snapshot operations to prevent data inconsistencies. To resolve this issue, you can either wait for the current snapshot operation to complete before deleting, or you can manually stop the running snapshot operation using the ‘Delete Snapshot API’. However, be cautious as interrupting a snapshot operation can lead to incomplete snapshots.
This guide will help you check for common problems that cause the log ” another snapshot is currently running cannot delete ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: snapshot, delete.
Overview
DELETE is an Elasticsearch API which removes a document from a specific index. This API requires an index name and _id document to delete the document.
Delete a document
DELETE /my_index/_doc/1
Notes
- A delete request throws 404 error code if the document does not already exist in the index.
- If you want to delete a set of documents that matches a query, you need to use delete by query API.
Log Context
Log “another snapshot is currently running cannot delete” class name is SnapshotsService.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
SnapshotsInProgress.Entry snapshotEntry = snapshots != null ? snapshots.snapshot(snapshot) : null;
if (snapshotEntry == null) {
// This snapshot is not running - delete
if (snapshots != null && !snapshots.entries().isEmpty()) {
// However other snapshots are running - cannot continue
throw new ConcurrentSnapshotExecutionException(snapshot; "another snapshot is currently running cannot delete");
}
// add the snapshot deletion to the cluster state
SnapshotDeletionsInProgress.Entry entry = new SnapshotDeletionsInProgress.Entry(
snapshot;
threadPool.absoluteTimeInMillis();
