Golang kv.RunInNewTxn函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Golang中github.com/pingcap/tidb/kv.RunInNewTxn函数的典型用法代码示例。如果您正苦于以下问题：Golang RunInNewTxn函数的具体用法？Golang RunInNewTxn怎么用？Golang RunInNewTxn使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了RunInNewTxn函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestBoltDBDeadlock

func (s *testKVSuite) TestBoltDBDeadlock(c *C) {
	d := Driver{
		boltdb.Driver{},
	}
	path := "boltdb_test"
	defer os.Remove(path)
	store, err := d.Open(path)
	c.Assert(err, IsNil)
	defer store.Close()

	kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		txn.Set([]byte("a"), []byte("0"))
		txn.Inc([]byte("a"), 1)

		kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
			txn.Set([]byte("b"), []byte("0"))
			txn.Inc([]byte("b"), 1)

			return nil
		})

		return nil
	})

	kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		n, err := txn.GetInt64([]byte("a"))
		c.Assert(err, IsNil)
		c.Assert(n, Equals, int64(1))

		n, err = txn.GetInt64([]byte("b"))
		c.Assert(err, IsNil)
		c.Assert(n, Equals, int64(1))
		return nil
	})
}

开发者ID:zebozhuang，项目名称:tidb，代码行数:35，代码来源:kv_test.go

示例2: TestUpdateMultipleTable

func (s *testDBSuite) TestUpdateMultipleTable(c *C) {
	defer testleak.AfterTest(c)
	store, err := tidb.NewStore("memory://update_multiple_table")
	c.Assert(err, IsNil)
	tk := testkit.NewTestKit(c, store)
	tk.MustExec("use test")
	tk.MustExec("create table t1 (c1 int, c2 int)")
	tk.MustExec("insert t1 values (1, 1), (2, 2)")
	tk.MustExec("create table t2 (c1 int, c2 int)")
	tk.MustExec("insert t2 values (1, 3), (2, 5)")
	ctx := tk.Se.(context.Context)
	domain := sessionctx.GetDomain(ctx)
	is := domain.InfoSchema()
	db, ok := is.SchemaByName(model.NewCIStr("test"))
	c.Assert(ok, IsTrue)
	t1Tbl, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t1"))
	c.Assert(err, IsNil)
	t1Info := t1Tbl.Meta()

	// Add a new column in write only state.
	newColumn := &model.ColumnInfo{
		ID:           100,
		Name:         model.NewCIStr("c3"),
		Offset:       2,
		DefaultValue: 9,
		FieldType:    *types.NewFieldType(mysql.TypeLonglong),
		State:        model.StateWriteOnly,
	}
	t1Info.Columns = append(t1Info.Columns, newColumn)

	kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		m := meta.NewMeta(txn)
		_, err = m.GenSchemaVersion()
		c.Assert(err, IsNil)
		c.Assert(m.UpdateTable(db.ID, t1Info), IsNil)
		return nil
	})
	err = domain.Reload()
	c.Assert(err, IsNil)

	tk.MustExec("update t1, t2 set t1.c1 = 8, t2.c2 = 10 where t1.c2 = t2.c1")
	tk.MustQuery("select * from t1").Check(testkit.Rows("8 1", "8 2"))
	tk.MustQuery("select * from t2").Check(testkit.Rows("1 10", "2 10"))

	newColumn.State = model.StatePublic

	kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		m := meta.NewMeta(txn)
		_, err = m.GenSchemaVersion()
		c.Assert(err, IsNil)
		c.Assert(m.UpdateTable(db.ID, t1Info), IsNil)
		return nil
	})
	err = domain.Reload()
	c.Assert(err, IsNil)

	tk.MustQuery("select * from t1").Check(testkit.Rows("8 1 9", "8 2 9"))
}

开发者ID:XuHuaiyu，项目名称:tidb，代码行数:58，代码来源:ddl_db_test.go

示例3: dropTableIndex

func (d *ddl) dropTableIndex(t table.Table, indexInfo *model.IndexInfo) error {
	prefix := kv.GenIndexPrefix(t.IndexPrefix(), indexInfo.Name.L)
	prefixBytes := []byte(prefix)

	keys := make([]string, maxBatchSize)

	for {
		keys := keys[0:0]
		err := kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
			iter, err := txn.Seek(prefixBytes)
			if err != nil {
				return errors.Trace(err)
			}

			defer iter.Close()
			for i := 0; i < maxBatchSize; i++ {
				if iter.Valid() && strings.HasPrefix(iter.Key(), prefix) {
					keys = append(keys, iter.Key())
					err = iter.Next()
					if err != nil {
						return errors.Trace(err)
					}
				} else {
					break
				}
			}

			return nil
		})

		// if err or delete no keys, return.
		if err != nil || len(keys) == 0 {
			return errors.Trace(err)
		}

		// delete index key one by one
		for _, key := range keys {
			err = kv.RunInNewTxn(d.store, true, func(txn kv.Transaction) error {
				if err := d.isReorgRunnable(txn); err != nil {
					return errors.Trace(err)
				}

				err1 := txn.Delete([]byte(key))
				// if key doesn't exist, skip this error.
				if err1 != nil && !terror.ErrorEqual(err1, kv.ErrNotExist) {
					return errors.Trace(err1)
				}

				return nil
			})

			if err != nil {
				return errors.Trace(err)
			}
		}
	}
}

开发者ID:yzl11，项目名称:vessel，代码行数:57，代码来源:index.go

示例4: Reload

// Reload reloads InfoSchema.
func (do *Domain) Reload() error {
	// for test
	if do.SchemaValidity.MockReloadFailed {
		err := kv.RunInNewTxn(do.store, false, func(txn kv.Transaction) error {
			do.SchemaValidity.setLastFailedTS(txn.StartTS())
			return nil
		})
		if err != nil {
			log.Errorf("mock reload failed err:%v", err)
			return errors.Trace(err)
		}
		return errors.New("mock reload failed")
	}

	// lock here for only once at same time.
	do.m.Lock()
	defer do.m.Unlock()

	timeout := do.ddl.GetLease() / 2
	if timeout < defaultMinReloadTimeout {
		timeout = defaultMinReloadTimeout
	}

	exit := int32(0)
	done := make(chan error, 1)
	go func() {
		var err error

		for {
			err = kv.RunInNewTxn(do.store, false, do.loadInfoSchema)
			if err == nil {
				atomic.StoreInt64(&do.lastLeaseTS, time.Now().UnixNano())
				break
			}

			log.Errorf("[ddl] load schema err %v, retry again", errors.ErrorStack(err))
			if atomic.LoadInt32(&exit) == 1 {
				return
			}
			// TODO: use a backoff algorithm.
			time.Sleep(500 * time.Millisecond)
			continue
		}

		done <- err
	}()

	select {
	case err := <-done:
		return errors.Trace(err)
	case <-time.After(timeout):
		atomic.StoreInt32(&exit, 1)
		return ErrLoadSchemaTimeOut
	}
}

开发者ID:yangxuanjia，项目名称:tidb，代码行数:56，代码来源:domain.go

示例5: TestMultiInc

func (t *testIsolationSuite) TestMultiInc(c *C) {
	store, err := tidb.NewStore("memory://test/test_isolation")
	c.Assert(err, IsNil)
	defer store.Close()

	threadCnt := 4
	incCnt := 100
	keyCnt := 4

	keys := make([][]byte, 0, keyCnt)
	for i := 0; i < keyCnt; i++ {
		keys = append(keys, []byte(fmt.Sprintf("test_key_%d", i)))
	}

	var wg sync.WaitGroup

	wg.Add(threadCnt)
	for i := 0; i < threadCnt; i++ {
		go func() {
			defer wg.Done()
			for j := 0; j < incCnt; j++ {
				err1 := kv.RunInNewTxn(store, true, func(txn kv.Transaction) error {
					for _, key := range keys {
						_, err2 := kv.IncInt64(txn, key, 1)
						if err2 != nil {
							return err2
						}
					}

					return nil
				})
				c.Assert(err1, IsNil)
			}
		}()
	}

	wg.Wait()

	for i := 0; i < keyCnt; i++ {
		err = kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
			for _, key := range keys {
				id, err1 := kv.GetInt64(txn, key)
				if err1 != nil {
					return err1
				}
				c.Assert(id, Equals, int64(threadCnt*incCnt))
			}
			return nil
		})
		c.Assert(err, IsNil)
	}
}

开发者ID:lovedboy，项目名称:tidb，代码行数:52，代码来源:isolation_test.go

示例6: TestIsolationMultiInc

func (s *testKVSuite) TestIsolationMultiInc(c *C) {
	defer testleak.AfterTest(c)()
	threadCnt := 4
	incCnt := 100
	keyCnt := 4

	keys := make([][]byte, 0, keyCnt)
	for i := 0; i < keyCnt; i++ {
		keys = append(keys, []byte(fmt.Sprintf("test_key_%d", i)))
	}

	var wg sync.WaitGroup

	wg.Add(threadCnt)
	for i := 0; i < threadCnt; i++ {
		go func() {
			defer wg.Done()
			for j := 0; j < incCnt; j++ {
				err := kv.RunInNewTxn(s.s, true, func(txn kv.Transaction) error {
					for _, key := range keys {
						_, err1 := kv.IncInt64(txn, key, 1)
						if err1 != nil {
							return err1
						}
					}

					return nil
				})
				c.Assert(err, IsNil)
			}
		}()
	}

	wg.Wait()

	err := kv.RunInNewTxn(s.s, false, func(txn kv.Transaction) error {
		for _, key := range keys {
			id, err1 := kv.GetInt64(txn, key)
			if err1 != nil {
				return err1
			}
			c.Assert(id, Equals, int64(threadCnt*incCnt))
			txn.Delete(key)
		}
		return nil
	})
	c.Assert(err, IsNil)
}

开发者ID:yangxuanjia，项目名称:tidb，代码行数:48，代码来源:store_test.go

示例7: TestT

func (*testSuite) TestT(c *C) {
	driver := localstore.Driver{Driver: goleveldb.MemoryDriver{}}
	store, err := driver.Open("memory")
	c.Assert(err, IsNil)
	defer store.Close()

	err = kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		m := meta.NewMeta(txn)
		err = m.CreateDatabase(&model.DBInfo{ID: 1, Name: model.NewCIStr("a")})
		c.Assert(err, IsNil)
		err = m.CreateTable(1, &model.TableInfo{ID: 1, Name: model.NewCIStr("t")})
		c.Assert(err, IsNil)
		return nil
	})
	c.Assert(err, IsNil)

	alloc := autoid.NewAllocator(store, 1)
	c.Assert(alloc, NotNil)

	id, err := alloc.Alloc(1)
	c.Assert(err, IsNil)
	c.Assert(id, Equals, int64(1))
	id, err = alloc.Alloc(1)
	c.Assert(err, IsNil)
	c.Assert(id, Equals, int64(2))
	id, err = alloc.Alloc(0)
	c.Assert(err, NotNil)
}

开发者ID:lovedboy，项目名称:tidb，代码行数:28，代码来源:autoid_test.go

示例8: Alloc

// Alloc allocs the next autoID for table with tableID.
// It gets a batch of autoIDs at a time. So it does not need to access storage for each call.
func (alloc *allocator) Alloc(tableID int64) (int64, error) {
	if tableID == 0 {
		return 0, errors.New("Invalid tableID")
	}
	metaKey := meta.AutoIDKey(tableID)
	alloc.mu.Lock()
	defer alloc.mu.Unlock()
	if alloc.base == alloc.end { // step
		err := kv.RunInNewTxn(alloc.store, true, func(txn kv.Transaction) error {
			end, err := meta.GenID(txn, []byte(metaKey), step)
			if err != nil {
				return errors.Trace(err)
			}

			alloc.end = end
			alloc.base = alloc.end - step
			return nil
		})

		if err != nil {
			return 0, errors.Trace(err)
		}
	}

	alloc.base++
	log.Infof("Alloc id %d, table ID:%d, from %p, store ID:%s", alloc.base, tableID, alloc, alloc.store.UUID())
	return alloc.base, nil
}

开发者ID:ninefive，项目名称:tidb，代码行数:30，代码来源:autoid.go

示例9: TestDropSchemaError

func (s *testDDLSuite) TestDropSchemaError(c *C) {
	defer testleak.AfterTest(c)()
	store := testCreateStore(c, "test_drop_schema")
	defer store.Close()

	lease := 50 * time.Millisecond
	d := newDDL(store, nil, nil, lease)
	defer d.close()

	job := &model.Job{
		SchemaID: 1,
		Type:     model.ActionDropSchema,
		Args: []interface{}{&model.DBInfo{
			Name: model.CIStr{O: "test"},
		}},
	}
	err := kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		t := meta.NewMeta(txn)
		return d.prepareBgJob(t, job)
	})
	c.Check(err, IsNil)
	d.startBgJob(job.Type)

	time.Sleep(lease)
	verifyBgJobState(c, d, job, model.JobDone)
}

开发者ID:duzhanyuan，项目名称:tidb，代码行数:26，代码来源:bg_worker_test.go

示例10: dropTableColumn

func (d *ddl) dropTableColumn(t table.Table, colInfo *model.ColumnInfo, reorgInfo *reorgInfo) error {
	version := reorgInfo.SnapshotVer
	seekHandle := reorgInfo.Handle

	col := &column.Col{ColumnInfo: *colInfo}
	for {
		handles, err := d.getSnapshotRows(t, version, seekHandle)
		if err != nil {
			return errors.Trace(err)
		} else if len(handles) == 0 {
			return nil
		}

		seekHandle = handles[len(handles)-1] + 1

		err = kv.RunInNewTxn(d.store, true, func(txn kv.Transaction) error {
			if err1 := d.isReorgRunnable(txn); err1 != nil {
				return errors.Trace(err1)
			}

			var h int64
			for _, h = range handles {
				key := t.RecordKey(h, col)
				err1 := txn.Delete(key)
				if err1 != nil && !terror.ErrorEqual(err1, kv.ErrNotExist) {
					return errors.Trace(err1)
				}
			}
			return errors.Trace(reorgInfo.UpdateHandle(txn, h))
		})
		if err != nil {
			return errors.Trace(err)
		}
	}
}

开发者ID:youprofit，项目名称:tidb，代码行数:35，代码来源:column.go

示例11: CreateSchema

func (d *ddl) CreateSchema(ctx context.Context, schema model.CIStr) (err error) {
	is := d.GetInformationSchema()
	_, ok := is.SchemaByName(schema)
	if ok {
		return errors.Trace(ErrExists)
	}
	info := &model.DBInfo{Name: schema}
	info.ID, err = d.genGlobalID()
	if err != nil {
		return errors.Trace(err)
	}

	err = kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
		t := meta.NewMeta(txn)
		err := d.verifySchemaMetaVersion(t, is.SchemaMetaVersion())
		if err != nil {
			return errors.Trace(err)
		}

		err = t.CreateDatabase(info)

		log.Warnf("save schema %s", info)
		return errors.Trace(err)
	})
	if d.onDDLChange != nil {
		err = d.onDDLChange(err)
	}
	return errors.Trace(err)
}

开发者ID:botvs，项目名称:tidb，代码行数:29，代码来源:ddl.go

示例12: isBoostrapped

func isBoostrapped(store kv.Storage) bool {
	// check in memory
	_, ok := storeBootstrapped[store.UUID()]
	if ok {
		return true
	}

	// check in kv store
	err := kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		var err error
		t := meta.NewMeta(txn)
		ok, err = t.IsBootstrapped()
		return errors.Trace(err)
	})

	if err != nil {
		log.Fatalf("check bootstrapped err %v", err)
	}

	if ok {
		// here mean memory is not ok, but other server has already finished it
		storeBootstrapped[store.UUID()] = true
	}

	return ok
}

开发者ID:losas，项目名称:tidb，代码行数:26，代码来源:session.go

示例13: Alloc

// Alloc allocs the next autoID for table with tableID.
// It gets a batch of autoIDs at a time. So it does not need to access storage for each call.
func (alloc *allocator) Alloc(tableID int64) (int64, error) {
	if tableID == 0 {
		return 0, errors.New("Invalid tableID")
	}
	alloc.mu.Lock()
	defer alloc.mu.Unlock()
	if alloc.base == alloc.end { // step
		err := kv.RunInNewTxn(alloc.store, true, func(txn kv.Transaction) error {
			m := meta.NewMeta(txn)
			// err1 is used for passing `go tool vet --shadow` check.
			end, err1 := m.GenAutoTableID(alloc.dbID, tableID, step)
			if err1 != nil {
				return errors.Trace(err1)
			}

			alloc.end = end
			alloc.base = alloc.end - step
			return nil
		})

		if err != nil {
			return 0, errors.Trace(err)
		}
	}

	alloc.base++
	log.Infof("Alloc id %d, table ID:%d, from %p, database ID:%d", alloc.base, tableID, alloc, alloc.dbID)
	return alloc.base, nil
}

开发者ID:yzl11，项目名称:vessel，代码行数:31，代码来源:autoid.go

示例14: TestDropTableError

func (s *testDDLSuite) TestDropTableError(c *C) {
	defer testleak.AfterTest(c)()
	store := testCreateStore(c, "test_drop_table")
	defer store.Close()

	d := newDDL(store, nil, nil, testLease)
	defer d.close()

	dbInfo := testSchemaInfo(c, d, "test")
	testCreateSchema(c, mock.NewContext(), d, dbInfo)

	job := &model.Job{
		SchemaID: dbInfo.ID,
		Type:     model.ActionDropTable,
		Args: []interface{}{&model.TableInfo{
			ID:   1,
			Name: model.CIStr{O: "t"},
		}},
	}
	err := kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		t := meta.NewMeta(txn)
		return d.prepareBgJob(t, job)
	})
	c.Check(err, IsNil)
	d.startBgJob(job.Type)

	time.Sleep(testLease * 3)
	verifyBgJobState(c, d, job, model.JobDone)
}

开发者ID:yubobo，项目名称:tidb，代码行数:29，代码来源:bg_worker_test.go

示例15: TestInc

func (t *testIsolationSuite) TestInc(c *C) {
	store, err := tidb.NewStore("memory://test/test_isolation")
	c.Assert(err, IsNil)
	defer store.Close()

	threadCnt := 4

	ids := make(map[int64]struct{}, threadCnt*100)
	var m sync.Mutex
	var wg sync.WaitGroup

	wg.Add(threadCnt)
	for i := 0; i < threadCnt; i++ {
		go func() {
			defer wg.Done()
			for j := 0; j < 100; j++ {
				var id int64
				err := kv.RunInNewTxn(store, true, func(txn kv.Transaction) error {
					var err1 error
					id, err1 = kv.IncInt64(txn, []byte("key"), 1)
					return err1
				})
				c.Assert(err, IsNil)

				m.Lock()
				_, ok := ids[id]
				ids[id] = struct{}{}
				m.Unlock()
				c.Assert(ok, IsFalse)
			}
		}()
	}

	wg.Wait()
}

开发者ID:lovedboy，项目名称:tidb，代码行数:35，代码来源:isolation_test.go

示例16: testCheckSchemaState

func testCheckSchemaState(c *C, d *ddl, dbInfo *model.DBInfo, state model.SchemaState) {
	isDropped := true

	for {
		kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
			t := meta.NewMeta(txn)
			info, err := t.GetDatabase(dbInfo.ID)
			c.Assert(err, IsNil)

			if state == model.StateNone {
				isDropped = checkDrop(c, t)
				if !isDropped {
					return nil
				}
				c.Assert(info, IsNil)
				return nil
			}

			c.Assert(info.Name, DeepEquals, dbInfo.Name)
			c.Assert(info.State, Equals, state)
			return nil
		})

		if isDropped {
			break
		}
	}
}

开发者ID:youprofit，项目名称:tidb，代码行数:28，代码来源:schema_test.go

示例17: CreateSchema

func (d *ddl) CreateSchema(ctx context.Context, schema model.CIStr) (err error) {
	is := d.GetInformationSchema()
	_, ok := is.SchemaByName(schema)
	if ok {
		return errors.Trace(ErrExists)
	}
	info := &model.DBInfo{Name: schema}
	info.ID, err = meta.GenGlobalID(d.store)
	if err != nil {
		return errors.Trace(err)
	}

	err = kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
		err := d.verifySchemaMetaVersion(txn, is.SchemaMetaVersion())
		if err != nil {
			return errors.Trace(err)
		}
		err = d.writeSchemaInfo(info, txn)
		return errors.Trace(err)
	})
	if d.onDDLChange != nil {
		err = d.onDDLChange(err)
	}
	return errors.Trace(err)
}

开发者ID:H0bby，项目名称:tidb，代码行数:25，代码来源:ddl.go

示例18: getStoreBootstrapVersion

func getStoreBootstrapVersion(store kv.Storage) int64 {
	// check in memory
	_, ok := storeBootstrapped[store.UUID()]
	if ok {
		return currentBootstrapVersion
	}

	var ver int64
	// check in kv store
	err := kv.RunInNewTxn(store, false, func(txn kv.Transaction) error {
		var err error
		t := meta.NewMeta(txn)
		ver, err = t.GetBootstrapVersion()
		return errors.Trace(err)
	})

	if err != nil {
		log.Fatalf("check bootstrapped err %v", err)
	}

	if ver > notBootstrapped {
		// here mean memory is not ok, but other server has already finished it
		storeBootstrapped[store.UUID()] = true
	}

	return ver
}

开发者ID:pingcap，项目名称:tidb，代码行数:27，代码来源:session.go

示例19: DropTable

// DropTable will proceed even if some table in the list does not exists.
func (d *ddl) DropTable(ctx context.Context, ti table.Ident) (err error) {
	is := d.GetInformationSchema()
	schema, ok := is.SchemaByName(ti.Schema)
	if !ok {
		return errors.Trace(qerror.ErrDatabaseNotExist)
	}

	tb, err := is.TableByName(ti.Schema, ti.Name)
	if err != nil {
		return errors.Trace(err)
	}

	err = kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
		t := meta.NewMeta(txn)
		err := d.verifySchemaMetaVersion(t, is.SchemaMetaVersion())
		if err != nil {
			return errors.Trace(err)
		}

		err = t.DropTable(schema.ID, tb.Meta().ID)
		return errors.Trace(err)
	})
	if d.onDDLChange != nil {
		err = d.onDDLChange(err)
		if err != nil {
			return errors.Trace(err)
		}
	}
	err = d.deleteTableData(ctx, tb)
	return errors.Trace(err)
}

开发者ID:botvs，项目名称:tidb，代码行数:32，代码来源:ddl.go

示例20: startJob

func (d *ddl) startJob(ctx context.Context, job *model.Job) error {
	// for every DDL, we must commit current transaction.
	if err := ctx.FinishTxn(false); err != nil {
		return errors.Trace(err)
	}

	// Create a new job and queue it.
	err := kv.RunInNewTxn(d.store, true, func(txn kv.Transaction) error {
		t := meta.NewMeta(txn)
		var err error
		job.ID, err = t.GenGlobalID()
		if err != nil {
			return errors.Trace(err)
		}

		err = t.EnQueueDDLJob(job)
		return errors.Trace(err)
	})

	if err != nil {
		return errors.Trace(err)
	}

	// notice worker that we push a new job and wait the job done.
	asyncNotify(d.jobCh)

	log.Warnf("start DDL job %v", job)

	jobID := job.ID

	var historyJob *model.Job

	// for a job from start to end, the state of it will be none -> delete only -> write only -> reorganization -> public
	// for every state change, we will wait as lease 2 * lease time, so here the ticker check is 10 * lease.
	ticker := time.NewTicker(chooseLeaseTime(10*d.lease, 10*time.Second))
	defer ticker.Stop()
	for {
		select {
		case <-d.jobDoneCh:
		case <-ticker.C:
		}

		historyJob, err = d.getHistoryJob(jobID)
		if err != nil {
			log.Errorf("get history job err %v, check again", err)
			continue
		} else if historyJob == nil {
			log.Warnf("job %d is not in history, maybe not run", jobID)
			continue
		}

		// if a job is a history table, the state must be JobDone or JobCancel.
		if historyJob.State == model.JobDone {
			return nil
		}

		return errors.Errorf(historyJob.Error)
	}
}

开发者ID:yzl11，项目名称:vessel，代码行数:59，代码来源:worker.go

注：本文中的github.com/pingcap/tidb/kv.RunInNewTxn函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。