hdfs dfsadmin -createSnapshot /path snapshot_namehdfs dfs -listSnapshots /pathhdfs dfs -restoreSnapshot /path snapshot_namehadoop distcp source_path destination_pathhdfs dfs -get /hdfs_path /local_path，恢復時用hdfs dfs -put /local_path /hdfs_pathhadoop archive -archiveName name.har -p /source_path /dest_path.Trash目錄恢復誤刪文件：hdfs dfs -mv /user/.Trash/Current/file /original_path注意：操作前確保集群正常運行，優先在測試環境驗證備份恢復流程。
參考來源：[1,2,3,4,5,6,7,8,10,11]
