lightning, ddl: set TS to engineMeta after ResetEngineSkipAllocTS (#5…

…7998)

close #57980

pkg/ddl/ingest/backend.go

@@ -229,7 +229,10 @@ func (bc *litBackendCtx) Flush(ctx context.Context, mode FlushMode) (flushed, im
 		newTS, err = mgr.refreshTSAndUpdateCP()
 		if err == nil {
 			for _, ei := range bc.engines {
-				ei.openedEngine.SetTS(newTS)
+				err = bc.backend.SetTSAfterResetEngine(ei.uuid, newTS)
+				if err != nil {
+					return false, false, err
+				}
 			}
 		}
 	}

pkg/lightning/backend/backend.go

@@ -98,7 +98,10 @@ type EngineConfig struct {
 	// when opening the engine, instead of removing it.
 	KeepSortDir bool
 	// TS is the preset timestamp of data in the engine. When it's 0, the used TS
-	// will be set lazily.
+	// will be set lazily. This is used by local backend. This field will be written
+	// to engineMeta.TS and take effect in below cases:
+	// - engineManager.openEngine
+	// - engineManager.closeEngine only for an external engine
 	TS uint64
 }
 
@@ -319,13 +322,6 @@ func (engine *OpenedEngine) LocalWriter(ctx context.Context, cfg *LocalWriterCon
 	return engine.backend.LocalWriter(ctx, cfg, engine.uuid)
 }
 
-// SetTS sets the TS of the engine. In most cases if the caller wants to specify
-// TS it should use the TS field in EngineConfig. This method is only used after
-// a ResetEngine.
-func (engine *OpenedEngine) SetTS(ts uint64) {
-	engine.config.TS = ts
-}
-
 // UnsafeCloseEngine closes the engine without first opening it.
 // This method is "unsafe" as it does not follow the normal operation sequence
 // (Open -> Write -> Close -> Import). This method should only be used when one

pkg/lightning/backend/local/engine_test.go

@@ -23,6 +23,7 @@ import (
 	"path/filepath"
 	"sync"
 	"testing"
+	"time"
 
 	"github.com/cockroachdb/pebble"
 	"github.com/cockroachdb/pebble/objstorage/objstorageprovider"
@@ -34,6 +35,7 @@ import (
 	"github.com/pingcap/tidb/pkg/lightning/common"
 	"github.com/pingcap/tidb/pkg/lightning/log"
 	"github.com/stretchr/testify/require"
+	"github.com/tikv/client-go/v2/oracle"
 )
 
 func makePebbleDB(t *testing.T, opt *pebble.Options) (*pebble.DB, string) {
@@ -68,6 +70,7 @@ func TestGetEngineSizeWhenImport(t *testing.T) {
 		keyAdapter:   common.NoopKeyAdapter{},
 		logger:       log.L(),
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	// simulate import
 	f.lock(importMutexStateImport)
@@ -106,6 +109,7 @@ func TestIngestSSTWithClosedEngine(t *testing.T) {
 		keyAdapter:   common.NoopKeyAdapter{},
 		logger:       log.L(),
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	f.sstIngester = dbSSTIngester{e: f}
 	sstPath := path.Join(tmpPath, uuid.New().String()+".sst")
@@ -142,6 +146,7 @@ func TestGetFirstAndLastKey(t *testing.T) {
 	f := &Engine{
 		sstDir: tmpPath,
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	err := db.Set([]byte("a"), []byte("a"), nil)
 	require.NoError(t, err)
@@ -184,6 +189,7 @@ func TestIterOutputHasUniqueMemorySpace(t *testing.T) {
 	f := &Engine{
 		sstDir: tmpPath,
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	err := db.Set([]byte("a"), []byte("a"), nil)
 	require.NoError(t, err)

pkg/lightning/backend/local/local.go

@@ -1602,12 +1602,25 @@ func (local *Backend) ResetEngine(ctx context.Context, engineUUID uuid.UUID) err
 }
 
 // ResetEngineSkipAllocTS is like ResetEngine but the inner TS of the engine is
-// invalid. Caller must use OpenedEngine.SetTS to set a valid TS before import
+// invalid. Caller must use SetTSAfterResetEngine to set a valid TS before import
 // the engine.
 func (local *Backend) ResetEngineSkipAllocTS(ctx context.Context, engineUUID uuid.UUID) error {
 	return local.engineMgr.resetEngine(ctx, engineUUID, true)
 }
 
+// SetTSAfterResetEngine allocates a new TS for the engine after it's reset.
+// This is typically called after persisting the chosen TS of the engine to make
+// sure TS is not changed after task failover.
+func (local *Backend) SetTSAfterResetEngine(engineUUID uuid.UUID, ts uint64) error {
+	e := local.engineMgr.lockEngine(engineUUID, importMutexStateClose)
+	if e == nil {
+		return errors.Errorf("engine %s not found in SetTSAfterResetEngine", engineUUID.String())
+	}
+	defer e.unlock()
+	e.engineMeta.TS = ts
+	return e.saveEngineMeta()
+}
+
 // CleanupEngine cleanup the engine and reclaim the space.
 func (local *Backend) CleanupEngine(ctx context.Context, engineUUID uuid.UUID) error {
 	return local.engineMgr.cleanupEngine(ctx, engineUUID)

pkg/lightning/backend/local/local_test.go

@@ -60,6 +60,7 @@ import (
 	"github.com/pingcap/tidb/pkg/util/hack"
 	"github.com/pingcap/tidb/pkg/util/mathutil"
 	"github.com/stretchr/testify/require"
+	"github.com/tikv/client-go/v2/oracle"
 	"github.com/tikv/client-go/v2/tikv"
 	pd "github.com/tikv/pd/client"
 	"github.com/tikv/pd/client/http"
@@ -353,6 +354,7 @@ func testLocalWriter(t *testing.T, needSort bool, partitialSort bool) {
 		keyAdapter:   common.NoopKeyAdapter{},
 		logger:       log.L(),
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	f.sstIngester = dbSSTIngester{e: f}
 	f.wg.Add(1)
@@ -587,6 +589,7 @@ func testMergeSSTs(t *testing.T, kvs [][]common.KvPair, meta *sstMeta) {
 		},
 		logger: log.L(),
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 
 	createSSTWriter := func() (*sstWriter, error) {
@@ -1176,7 +1179,7 @@ func (m mockIngestData) NewIter(_ context.Context, lowerBound, upperBound []byte
 	return &mockIngestIter{data: m, startIdx: i, endIdx: j, curIdx: i}
 }
 
-func (m mockIngestData) GetTS() uint64 { return 0 }
+func (m mockIngestData) GetTS() uint64 { return oracle.GoTimeToTS(time.Now()) }
 
 func (m mockIngestData) IncRef() {}
 
@@ -1565,6 +1568,7 @@ func TestPartialWriteIngestBusy(t *testing.T) {
 		keyAdapter:   common.NoopKeyAdapter{},
 		logger:       log.L(),
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	err = db.Set([]byte("a"), []byte("a"), nil)
 	require.NoError(t, err)
@@ -1708,6 +1712,7 @@ func TestSplitRangeAgain4BigRegion(t *testing.T) {
 		regionSplitKeysCache: [][]byte{{1}, {11}},
 		regionSplitSize:      1 << 30,
 	}
+	f.TS = oracle.GoTimeToTS(time.Now())
 	f.db.Store(db)
 	// keys starts with 0 is meta keys, so we start with 1.
 	for i := byte(1); i <= 10; i++ {

pkg/lightning/backend/local/region_job.go

@@ -43,6 +43,7 @@ import (
 	util2 "github.com/pingcap/tidb/pkg/util"
 	"github.com/pingcap/tidb/pkg/util/codec"
 	"github.com/pingcap/tidb/pkg/util/intest"
+	"github.com/tikv/client-go/v2/oracle"
 	"github.com/tikv/client-go/v2/util"
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
@@ -436,6 +437,20 @@ func (local *Backend) doWrite(ctx context.Context, j *regionJob) error {
 		allPeers = append(allPeers, peer)
 	}
 	dataCommitTS := j.ingestData.GetTS()
+	intest.AssertFunc(func() bool {
+		timeOfTS := oracle.GetTimeFromTS(dataCommitTS)
+		now := time.Now()
+		if timeOfTS.After(now) {
+			return false
+		}
+		if now.Sub(timeOfTS) > 24*time.Hour {
+			return false
+		}
+		return true
+	}, "TS used in import should in [now-1d, now], but got %d", dataCommitTS)
+	if dataCommitTS == 0 {
+		return errors.New("data commitTS is 0")
+	}
 	req.Chunk = &sst.WriteRequest_Batch{
 		Batch: &sst.WriteBatch{
 			CommitTs: dataCommitTS,

tests/realtikvtest/addindextest2/BUILD.bazel

@@ -25,5 +25,6 @@ go_test(
         "@com_github_phayes_freeport//:freeport",
         "@com_github_pingcap_failpoint//:failpoint",
         "@com_github_stretchr_testify//require",
+        "@com_github_tikv_client_go_v2//oracle",
     ],
 )

tests/realtikvtest/addindextest2/global_sort_test.go

@@ -20,6 +20,7 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/fsouza/fake-gcs-server/fakestorage"
 	"github.com/phayes/freeport"
@@ -37,6 +38,7 @@ import (
 	"github.com/pingcap/tidb/pkg/types"
 	"github.com/pingcap/tidb/tests/realtikvtest"
 	"github.com/stretchr/testify/require"
+	"github.com/tikv/client-go/v2/oracle"
 )
 
 func init() {
@@ -320,7 +322,11 @@ func TestIngestUseGivenTS(t *testing.T) {
 	t.Cleanup(func() {
 		tk.MustExec("set @@global.tidb_cloud_storage_uri = '';")
 	})
-	err = failpoint.Enable("github.com/pingcap/tidb/pkg/ddl/mockTSForGlobalSort", `return(123456789)`)
+
+	presetTS := oracle.GoTimeToTS(time.Now())
+	failpointTerm := fmt.Sprintf(`return(%d)`, presetTS)
+
+	err = failpoint.Enable("github.com/pingcap/tidb/pkg/ddl/mockTSForGlobalSort", failpointTerm)
 	require.NoError(t, err)
 
 	tk.MustExec("create table t (a int);")
@@ -336,10 +342,10 @@ func TestIngestUseGivenTS(t *testing.T) {
 	require.NoError(t, err)
 	tikvStore := dom.Store().(helper.Storage)
 	newHelper := helper.NewHelper(tikvStore)
-	mvccResp, err := newHelper.GetMvccByEncodedKeyWithTS(idxKey, 123456789)
+	mvccResp, err := newHelper.GetMvccByEncodedKeyWithTS(idxKey, presetTS)
 	require.NoError(t, err)
 	require.NotNil(t, mvccResp)
 	require.NotNil(t, mvccResp.Info)
 	require.Greater(t, len(mvccResp.Info.Writes), 0)
-	require.Equal(t, uint64(123456789), mvccResp.Info.Writes[0].CommitTs)
+	require.Equal(t, presetTS, mvccResp.Info.Writes[0].CommitTs)
 }

tests/realtikvtest/addindextest3/ingest_test.go

@@ -448,6 +448,34 @@ func TestAddIndexMockFlushError(t *testing.T) {
 	require.True(t, strings.Contains(jobTp, "ingest"), jobTp)
 }
 
+func TestAddIndexDiskQuotaTS(t *testing.T) {
+	store := realtikvtest.CreateMockStoreAndSetup(t)
+	tk := testkit.NewTestKit(t, store)
+
+	tk.MustExec("set @@global.tidb_enable_dist_task = 0;")
+	testAddIndexDiskQuotaTS(t, tk)
+	tk.MustExec("set @@global.tidb_enable_dist_task = 1;")
+	testAddIndexDiskQuotaTS(t, tk)
+}
+
+func testAddIndexDiskQuotaTS(t *testing.T, tk *testkit.TestKit) {
+	tk.MustExec("drop database if exists addindexlit;")
+	tk.MustExec("create database addindexlit;")
+	tk.MustExec("use addindexlit;")
+	tk.MustExec(`set global tidb_ddl_enable_fast_reorg=on;`)
+	tk.MustExec("set @@tidb_ddl_reorg_worker_cnt=1;")
+
+	tk.MustExec("create table t(id int primary key, b int, k int);")
+	tk.MustQuery("split table t by (30000);").Check(testkit.Rows("1 1"))
+	tk.MustExec("insert into t values(1, 1, 1);")
+	tk.MustExec("insert into t values(100000, 1, 1);")
+
+	ingest.ForceSyncFlagForTest = true
+	tk.MustExec("alter table t add index idx_test(b);")
+	ingest.ForceSyncFlagForTest = false
+	tk.MustExec("update t set b = b + 1;")
+}
+
 func TestAddIndexRemoteDuplicateCheck(t *testing.T) {
 	store := realtikvtest.CreateMockStoreAndSetup(t)
 	tk := testkit.NewTestKit(t, store)