diff --git a/dm/pkg/schema/tracker.go b/dm/pkg/schema/tracker.go
index eb9325ba743..631fcce9f85 100644
--- a/dm/pkg/schema/tracker.go
+++ b/dm/pkg/schema/tracker.go
@@ -21,6 +21,7 @@ import (
 	"sync"
 
 	"github.com/pingcap/errors"
+<<<<<<< HEAD
 	"github.com/pingcap/tidb/ddl"
 	"github.com/pingcap/tidb/ddl/schematracker"
 	"github.com/pingcap/tidb/executor"
@@ -36,6 +37,25 @@ import (
 	"github.com/pingcap/tidb/util/filter"
 	"github.com/pingcap/tidb/util/mock"
 	"github.com/pingcap/tidb/util/sqlexec"
+=======
+	"github.com/pingcap/tidb/pkg/ddl"
+	"github.com/pingcap/tidb/pkg/ddl/schematracker"
+	"github.com/pingcap/tidb/pkg/executor"
+	"github.com/pingcap/tidb/pkg/infoschema"
+	"github.com/pingcap/tidb/pkg/kv"
+	"github.com/pingcap/tidb/pkg/meta/autoid"
+	"github.com/pingcap/tidb/pkg/parser"
+	"github.com/pingcap/tidb/pkg/parser/ast"
+	"github.com/pingcap/tidb/pkg/parser/model"
+	"github.com/pingcap/tidb/pkg/parser/mysql"
+	"github.com/pingcap/tidb/pkg/sessionctx"
+	"github.com/pingcap/tidb/pkg/sessionctx/variable"
+	"github.com/pingcap/tidb/pkg/util/chunk"
+	"github.com/pingcap/tidb/pkg/util/filter"
+	"github.com/pingcap/tidb/pkg/util/mock"
+	"github.com/pingcap/tidb/pkg/util/sqlexec"
+	"github.com/pingcap/tiflow/dm/pkg/conn"
+>>>>>>> 2e729efee1 (dm: set enable cluster index to off for downstream tracker (#10346))
 	tcontext "github.com/pingcap/tiflow/dm/pkg/context"
 	fr "github.com/pingcap/tiflow/dm/pkg/func-rollback"
 	"github.com/pingcap/tiflow/dm/pkg/log"
@@ -464,6 +484,17 @@ func (dt *downstreamTracker) getTableInfoByCreateStmt(tctx *tcontext.Context, ta
 		return nil, dmterror.ErrSchemaTrackerInvalidCreateTableStmt.Delegate(err, createStr)
 	}
 
+	// suppress ErrTooLongKey
+	strictSQLModeBackup := dt.se.GetSessionVars().StrictSQLMode
+	dt.se.GetSessionVars().StrictSQLMode = false
+	// support drop PK
+	enableClusteredIndexBackup := dt.se.GetSessionVars().EnableClusteredIndex
+	dt.se.GetSessionVars().EnableClusteredIndex = variable.ClusteredIndexDefModeOff
+	defer func() {
+		dt.se.GetSessionVars().StrictSQLMode = strictSQLModeBackup
+		dt.se.GetSessionVars().EnableClusteredIndex = enableClusteredIndexBackup
+	}()
+
 	ti, err := ddl.BuildTableInfoWithStmt(dt.se, stmtNode.(*ast.CreateTableStmt), mysql.DefaultCharset, "", nil)
 	if err != nil {
 		return nil, dmterror.ErrSchemaTrackerCannotMockDownstreamTable.Delegate(err, createStr)
diff --git a/dm/pkg/schema/tracker_test.go b/dm/pkg/schema/tracker_test.go
index 373c9b841db..3b013184535 100644
--- a/dm/pkg/schema/tracker_test.go
+++ b/dm/pkg/schema/tracker_test.go
@@ -613,7 +613,7 @@ func TestGetDownStreamIndexInfo(t *testing.T) {
 
 	mock.ExpectQuery("SHOW CREATE TABLE " + tableID).WillReturnRows(
 		sqlmock.NewRows([]string{"Table", "Create Table"}).
-			AddRow("test", "create table t(a int primary key, b int, c varchar(20000), key(c(20000)))"))
+			AddRow("test", "create table t(a int, b int, c varchar(20000), primary key(a, b), key(c(20000)))/*!90000 SHARD_ROW_ID_BITS=6 */"))
 	dti, err := tracker.GetDownStreamTableInfo(tcontext.Background(), tableID, oriTi)
 	require.NoError(t, err)
 	require.NotNil(t, dti.WhereHandle.UniqueNotNullIdx)