executor,session: reimplement lock->put by SetLockedKeyValue (pingc…

…ap#42642)

ref pingcap#28011

Signed-off-by: zyguan <zhongyangguan@gmail.com>

executor/batch_point_get.go

@@ -450,15 +450,16 @@ func (e *BatchPointGetExec) initialize(ctx context.Context) error {
 			if !e.txn.Valid() {
 				return kv.ErrInvalidTxn
 			}
-			membuf := e.txn.GetMemBuffer()
-			for _, idxKey := range indexKeys {
-				handleVal := handleVals[string(idxKey)]
-				if len(handleVal) == 0 {
-					continue
-				}
-				err = membuf.Set(idxKey, handleVal)
-				if err != nil {
-					return err
+			txn, ok := e.txn.(interface {
+				ChangeLockIntoPut(context.Context, kv.Key, []byte) bool
+			})
+			if ok {
+				for _, idxKey := range indexKeys {
+					handleVal := handleVals[string(idxKey)]
+					if len(handleVal) == 0 {
+						continue
+					}
+					txn.ChangeLockIntoPut(ctx, idxKey, handleVal)
 				}
 			}
 		}

executor/point_get.go

@@ -270,10 +270,11 @@ func (e *PointGetExecutor) Next(ctx context.Context, req *chunk.Chunk) error {
 					if !e.txn.Valid() {
 						return kv.ErrInvalidTxn
 					}
-					memBuffer := e.txn.GetMemBuffer()
-					err = memBuffer.Set(e.idxKey, e.handleVal)
-					if err != nil {
-						return err
+					txn, ok := e.txn.(interface {
+						ChangeLockIntoPut(context.Context, kv.Key, []byte) bool
+					})
+					if ok {
+						txn.ChangeLockIntoPut(ctx, e.idxKey, e.handleVal)
 					}
 				}
 			}

go.mod

@@ -63,7 +63,7 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.2-0.20220504104629-106ec21d14df
 	github.com/tiancaiamao/appdash v0.0.0-20181126055449-889f96f722a2
-	github.com/tikv/client-go/v2 v2.0.1-0.20230117081319-35a262e90d9b
+	github.com/tikv/client-go/v2 v2.0.1-0.20230329072435-fc18f677df02
 	github.com/tikv/pd/client v0.0.0-20220307081149-841fa61e9710
 	github.com/twmb/murmur3 v1.1.3
 	github.com/uber/jaeger-client-go v2.22.1+incompatible

go.sum

@@ -755,8 +755,8 @@ github.com/stretchr/testify v1.7.2-0.20220504104629-106ec21d14df/go.mod h1:6Fq8o
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/tiancaiamao/appdash v0.0.0-20181126055449-889f96f722a2 h1:mbAskLJ0oJfDRtkanvQPiooDH8HvJ2FBh+iKT/OmiQQ=
 github.com/tiancaiamao/appdash v0.0.0-20181126055449-889f96f722a2/go.mod h1:2PfKggNGDuadAa0LElHrByyrz4JPZ9fFx6Gs7nx7ZZU=
-github.com/tikv/client-go/v2 v2.0.1-0.20230117081319-35a262e90d9b h1:IUH/4BrP9BJm7to+XUJslcwaZONuIEwwClBnlrO7zJM=
-github.com/tikv/client-go/v2 v2.0.1-0.20230117081319-35a262e90d9b/go.mod h1:VTlli8fRRpcpISj9I2IqroQmcAFfaTyBquiRhofOcDs=
+github.com/tikv/client-go/v2 v2.0.1-0.20230329072435-fc18f677df02 h1:5dBj57AfcdDSU6uV2RzGZcZDYOHIi+6aUbwREkVggxg=
+github.com/tikv/client-go/v2 v2.0.1-0.20230329072435-fc18f677df02/go.mod h1:VTlli8fRRpcpISj9I2IqroQmcAFfaTyBquiRhofOcDs=
 github.com/tikv/pd/client v0.0.0-20220307081149-841fa61e9710 h1:jxgmKOscXSjaFEKQGRyY5qOpK8hLqxs2irb/uDJMtwk=
 github.com/tikv/pd/client v0.0.0-20220307081149-841fa61e9710/go.mod h1:AtvppPwkiyUgQlR1W9qSqfTB+OsOIu19jDCOxOsPkmU=
 github.com/tklauser/go-sysconf v0.3.9 h1:JeUVdAOWhhxVcU6Eqr/ATFHgXk/mmiItdKeJPev3vTo=

session/txn.go

@@ -408,6 +408,24 @@ func (txn *LazyTxn) LockKeysFunc(ctx context.Context, lockCtx *kv.LockCtx, fn fu
 	return txn.Transaction.LockKeysFunc(ctx, lockCtx, lockFunc, keys...)
 }
 
+// ChangeLockIntoPut tries to cache a locked key-value pair that might be converted to PUT on commit, returns true if
+// the key-value pair has been cached.
+func (txn *LazyTxn) ChangeLockIntoPut(ctx context.Context, key kv.Key, value []byte) bool {
+	if len(value) == 0 {
+		return false
+	}
+	cache, ok := txn.Transaction.(interface{ SetLockedKeyValue([]byte, []byte) })
+	if !ok {
+		return false
+	}
+	_, err := txn.GetMemBuffer().Get(ctx, key)
+	if !kv.IsErrNotFound(err) {
+		return false
+	}
+	cache.SetLockedKeyValue(key, value)
+	return true
+}
+
 func (txn *LazyTxn) reset() {
 	txn.cleanup()
 	txn.changeToInvalid()

tests/realtikvtest/pessimistictest/pessimistic_test.go

@@ -2913,6 +2913,40 @@ func TestChangeLockToPut(t *testing.T) {
 	tk.MustExec("admin check table t1")
 }
 
+func TestIssue28011(t *testing.T) {
+	store, clean := realtikvtest.CreateMockStoreAndSetup(t)
+	defer clean()
+
+	tk := testkit.NewTestKit(t, store)
+	tk.MustExec("use test")
+
+	for _, tt := range []struct {
+		name      string
+		lockQuery string
+		finalRows [][]interface{}
+	}{
+		{"Update", "update t set b = 'x' where a = 'a'", testkit.Rows("a x", "b y", "c z")},
+		{"BatchUpdate", "update t set b = 'x' where a in ('a', 'b', 'c')", testkit.Rows("a x", "b y", "c x")},
+		{"SelectForUpdate", "select a from t where a = 'a' for update", testkit.Rows("a x", "b y", "c z")},
+		{"BatchSelectForUpdate", "select a from t where a in ('a', 'b', 'c') for update", testkit.Rows("a x", "b y", "c z")},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			tk.MustExec("drop table if exists t")
+			tk.MustExec("create table t (a varchar(10) primary key nonclustered, b varchar(10))")
+			tk.MustExec("insert into t values ('a', 'x'), ('b', 'x'), ('c', 'z')")
+			tk.MustExec("begin pessimistic")
+			tk.MustExec(tt.lockQuery)
+			tk.MustQuery("select a from t").Check(testkit.Rows("a", "b", "c"))
+			tk.MustExec("replace into t values ('b', 'y')")
+			tk.MustQuery("select a from t").Check(testkit.Rows("a", "b", "c"))
+			tk.MustQuery("select a, b from t order by a").Check(tt.finalRows)
+			tk.MustExec("commit")
+			tk.MustQuery("select a, b from t order by a").Check(tt.finalRows)
+			tk.MustExec("admin check table t")
+		})
+	}
+}
+
 func createTable(part bool, columnNames []string, columnTypes []string) string {
 	var str string
 	str = "create table t("