Not remove rocksdb folder when close and init (#5974)

Signed-off-by: Nfishpenguin <kun.yu@zilliz.com>

internal/util/rocksmq/server/rocksmq/global_rmq.go

@@ -12,7 +12,6 @@
 package rocksmq
 
 import (
-	"os"
 	"sync"
 
 	"github.com/milvus-io/milvus/internal/allocator"
@@ -33,9 +32,6 @@ func InitRocksMQ(rocksdbName string) error {
 	var err error
 	once.Do(func() {
 		kvname := rocksdbName + "_kv"
-		if _, err := os.Stat(kvname); !os.IsNotExist(err) {
-			_ = os.RemoveAll(kvname)
-		}
 		rocksdbKV, err := rocksdbkv.NewRocksdbKV(kvname)
 		if err != nil {
 			panic(err)
@@ -43,9 +39,6 @@ func InitRocksMQ(rocksdbName string) error {
 		idAllocator := allocator.NewGlobalIDAllocator("rmq_id", rocksdbKV)
 		_ = idAllocator.Initialize()
 
-		if _, err := os.Stat(rocksdbName); !os.IsNotExist(err) {
-			_ = os.RemoveAll(rocksdbName)
-		}
 		Rmq, err = NewRocksMQ(rocksdbName, idAllocator)
 		if err != nil {
 			panic(err)
@@ -57,9 +50,5 @@ func InitRocksMQ(rocksdbName string) error {
 func CloseRocksMQ() {
 	if Rmq != nil && Rmq.store != nil {
 		Rmq.store.Close()
-		rocksdbName := Rmq.store.Name()
-		_ = os.RemoveAll(rocksdbName)
-		kvname := rocksdbName + "_kv"
-		os.RemoveAll(kvname)
 	}
 }