版本： 6.8-7.5
简而言之，当在快照还原过程中尝试删除快照时，就会出现此错误。Elasticsearch不允许此操作，因为这可能导致数据不一致或丢失。要解决此问题，您可以等到还原过程完成后再删除快照，或者在继续删除之前取消正在进行的还原操作。在执行此类操作之前，务必确保拥有数据备份，以防止任何潜在的数据丢失。
日志上下文 #
日志"cannot delete snapshot during a restore"类名是 SnapshotsService.java。 我们从Elasticsearch源代码中提取了以下内容，供那些寻求深入上下文的人使用：
if (restoreInProgress != null) {
// don't allow snapshot deletions while a restore is taking place;
// otherwise we could end up deleting a snapshot that is being restored
// and the files the restore depends on would all be gone
if (restoreInProgress.isEmpty() == false) {
throw new ConcurrentSnapshotExecutionException(snapshot; "cannot delete snapshot during a restore");
}
}
ClusterState.Builder clusterStateBuilder = ClusterState.builder(currentState);
SnapshotsInProgress snapshots = currentState.custom(SnapshotsInProgress.TYPE);
SnapshotsInProgress.Entry snapshotEntry = snapshots != null ? snapshots.snapshot(snapshot) : null;
