原网址：https://github.com/facebook/rocksdb/wiki/Atomic-flush（有道）RocksDBsupportsatomicflushofmultiplecolumnfamiliesiftheDBoptionatomic_flushissettotrue.TheexecutionresultofflushingmultiplecolumnfamiliesiswrittentotheMANIFESTwith'all-or-nothing'guarantee(logically).Withatomicflush,eitherallornomemtableso
