utils: skip workload schema hack

pkg/filter/filter.go

@@ -38,6 +38,8 @@ const (
 	TiCDCSystemSchema = "tidb_cdc"
 	// LightningTaskInfoSchema is the schema only generated by Lightning
 	LightningTaskInfoSchema = "lightning_task_info"
+	// TiDBWorkloadSchema is the schema that needs to be skipped by TiCDC.
+	TiDBWorkloadSchema = "workload_schema"
 )
 
 // Filter are safe for concurrent use.

pkg/filter/filter_test.go

@@ -0,0 +1,28 @@
+// Copyright 2025 PingCAP, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filter
+
+import (
+	"testing"
+
+	"github.com/pingcap/ticdc/pkg/config"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFilterValue(t *testing.T) {
+	ft, err := NewFilter(&config.FilterConfig{}, "", false, false)
+	require.Nil(t, err)
+	ok := ft.ShouldIgnoreSchema(TiDBWorkloadSchema)
+	require.True(t, ok)
+}

pkg/filter/utils.go

@@ -33,6 +33,9 @@ func IsSysSchema(db string) bool {
 		return true
 	case LightningTaskInfoSchema:
 		return true
+	// TODO: skip workload schema, ref https://github.com/pingcap/ticdc/issues/1105 .
+	case TiDBWorkloadSchema:
+		return true
 	default:
 		return tifilter.IsSystemSchema(db)
 	}