del kvmvcc roll back limit

plugin/store/kvmvcc/kvmvccdb.go

@@ -16,7 +16,6 @@ import (
 )
 
 var klog = log.New("module", "kvmvccdb")
-var maxRollbackNum = 200
 
 // SetLogLevel set log level
 func SetLogLevel(level string) {
@@ -272,11 +271,6 @@ func (mvccs *KVMVCCStore) checkVersion(height int64) ([]*types.KeyValue, error)
 			kvset = append(kvset, kvlist...)
 
 			klog.Debug("store kvmvcc checkVersion DelMVCC4Height", "height", i, "maxVersion", maxVersion)
-			//为避免高度差过大时出现异常，做一个保护，一次最多回滚200个区块
-			count++
-			if count >= maxRollbackNum {
-				break
-			}
 		}
 	}
 

plugin/store/kvmvccmavl/kvmvccdb.go

@@ -15,6 +15,7 @@ import (
 	"github.com/33cn/chain33/queue"
 	"github.com/33cn/chain33/types"
 	"github.com/golang/protobuf/proto"
+	"time"
 )
 
 const (
@@ -26,7 +27,6 @@ const (
 )
 
 var (
-	maxRollbackNum = 200
 	// 是否开启裁剪
 	enablePrune bool
 	// 每个10000裁剪一次
@@ -294,7 +294,6 @@ func (mvccs *KVMVCCStore) checkVersion(height int64) ([]*types.KeyValue, error)
 	} else if maxVersion == height-1 {
 		return nil, nil
 	} else {
-		count := 1
 		for i := maxVersion; i >= height; i-- {
 			hash, err := mvccs.mvcc.GetVersionHash(i)
 			if err != nil {
@@ -309,11 +308,6 @@ func (mvccs *KVMVCCStore) checkVersion(height int64) ([]*types.KeyValue, error)
 			kvset = append(kvset, kvlist...)
 
 			kmlog.Debug("store kvmvcc checkVersion DelMVCC4Height", "height", i, "maxVersion", maxVersion)
-			//为避免高度差过大时出现异常，做一个保护，一次最多回滚200个区块
-			count++
-			if count >= maxRollbackNum {
-				break
-			}
 		}
 	}
 
@@ -345,7 +339,10 @@ func pruning(db dbm.DB, height int64) {
 func pruningMVCC(db dbm.DB, height int64) {
 	setPruning(pruningStateStart)
 	defer setPruning(pruningStateEnd)
+	start := time.Now()
 	pruningFirst(db, height)
+	end := time.Now()
+	kmlog.Debug("pruningMVCC", "height", height, "cost", end.Sub(start))
 }
 
 func pruningFirst(db dbm.DB, curHeight int64) {