diff --git a/src/rootserver/ddl_task/ob_ddl_task.cpp b/src/rootserver/ddl_task/ob_ddl_task.cpp
index 1d976f8416..b727500d8a 100644
--- a/src/rootserver/ddl_task/ob_ddl_task.cpp
+++ b/src/rootserver/ddl_task/ob_ddl_task.cpp
@@ -802,6 +802,18 @@ int ObDDLTask::get_ddl_type_str(const int64_t ddl_type, const char *&ddl_type_st
     case DDL_DROP_MLOG:
       ddl_type_str = "drop materialized view log";
       break;
+    case DDL_AUTO_SPLIT_BY_RANGE:
+      ddl_type_str = "auto split by range";
+      break;
+    case DDL_AUTO_SPLIT_NON_RANGE:
+      ddl_type_str = "auto split non range";
+      break;
+    case DDL_MANUAL_SPLIT_BY_RANGE:
+      ddl_type_str = "manual split by range";
+      break;
+    case DDL_MANUAL_SPLIT_NON_RANGE:
+      ddl_type_str = "manual split non range";
+      break;
     default:
       ret = OB_ERR_UNEXPECTED;
   }
diff --git a/src/rootserver/ob_ddl_service.cpp b/src/rootserver/ob_ddl_service.cpp
index 6f9f96d91b..cfc2b439e1 100755
--- a/src/rootserver/ob_ddl_service.cpp
+++ b/src/rootserver/ob_ddl_service.cpp
@@ -11267,6 +11267,14 @@ const char* ObDDLService::ddl_type_str(const ObDDLType ddl_type)
     str = "create materialized view log";
   } else if (DDL_DROP_MLOG == ddl_type) {
     str = "drop materialized view log";
+  } else if (DDL_AUTO_SPLIT_BY_RANGE == ddl_type) {
+    str = "auto split by range";
+  } else if (DDL_AUTO_SPLIT_NON_RANGE == ddl_type) {
+    str = "auto split by non range";
+  } else if (DDL_MANUAL_SPLIT_BY_RANGE == ddl_type) {
+    str = "manual split by range";
+  } else if (DDL_MANUAL_SPLIT_NON_RANGE == ddl_type) {
+    str = "manual split non range";
   }
 
   return str;
diff --git a/src/share/ob_ddl_common.h b/src/share/ob_ddl_common.h
index db5aeef6bf..0820019abe 100644
--- a/src/share/ob_ddl_common.h
+++ b/src/share/ob_ddl_common.h
@@ -64,6 +64,11 @@ enum ObDDLType
   DDL_DROP_MLOG = 9,
   DDL_CREATE_PARTITIONED_LOCAL_INDEX = 10,
   DDL_DROP_LOB = 11,
+  ///< @note tablet split.
+  DDL_AUTO_SPLIT_BY_RANGE = 100,
+  DDL_AUTO_SPLIT_NON_RANGE = 101,
+  DDL_MANUAL_SPLIT_BY_RANGE = 102,
+  DDL_MANUAL_SPLIT_NON_RANGE = 103,
   ///< @note Drop schema, and refuse concurrent trans.  
   DDL_DROP_SCHEMA_AVOID_CONCURRENT_TRANS = 500,
   DDL_DROP_DATABASE = 501,
@@ -143,6 +148,11 @@ enum ObDDLTaskStatus {
   WAIT_CHILD_TASK_FINISH = 16,
   REPENDING = 17,
   START_REFRESH_MVIEW_TASK = 18,
+  WAIT_FROZE_END = 19,
+  WAIT_COMPACTION_END = 20,
+  WAIT_DATA_TABLE_SPLIT_END = 21,
+  WAIT_LOCAL_INDEX_SPLIT_END = 22,
+  WAIT_LOB_TABLE_SPLIT_END = 23,
   FAIL = 99,
   SUCCESS = 100
 };
@@ -217,6 +227,21 @@ static const char* ddl_task_status_to_str(const ObDDLTaskStatus &task_status) {
     case ObDDLTaskStatus::START_REFRESH_MVIEW_TASK:
       str = "START_REFRESH_MVIEW_TASK";
       break;
+    case ObDDLTaskStatus::WAIT_FROZE_END:
+      str = "WAIT_FROZE_END";
+      break;
+    case ObDDLTaskStatus::WAIT_COMPACTION_END:
+      str = "WAIT_COMPACTION_END";
+      break;
+    case ObDDLTaskStatus::WAIT_DATA_TABLE_SPLIT_END:
+      str = "WAIT_DATA_TABLE_SPLIT_END";
+      break;
+    case ObDDLTaskStatus::WAIT_LOCAL_INDEX_SPLIT_END:
+      str = "WAIT_LOCAL_INDEX_SPLIT_END";
+      break;
+    case ObDDLTaskStatus::WAIT_LOB_TABLE_SPLIT_END:
+      str = "WAIT_LOB_TABLE_SPLIT_END";
+      break;
     case ObDDLTaskStatus::FAIL:
       str = "FAIL";
       break;
diff --git a/src/share/ob_debug_sync_point.h b/src/share/ob_debug_sync_point.h
index b9ef358be6..8bee2a0ccc 100755
--- a/src/share/ob_debug_sync_point.h
+++ b/src/share/ob_debug_sync_point.h
@@ -338,6 +338,11 @@ class ObString;
     ACT(COLUMN_REDEFINITION_COPY_TABLE_CONSTRAINTS,)\
     ACT(COLUMN_REDEFINITION_COPY_TABLE_FOREIGN_KEYS,)\
     ACT(COLUMN_REDEFINITION_TAKE_EFFECT,)\
+    ACT(PARTITION_SPLIT_WAIT_FREEZE_END,)\
+    ACT(PARTITION_SPLIT_WAIT_COMPACTION_END,)\
+    ACT(PARTITION_SPLIT_WAIT_DATA_TABLET_SPLIT_END,)\
+    ACT(PARTITION_SPLIT_WAIT_LOCAL_INDEX_SPLIT_END,)\
+    ACT(PARTITION_SPLIT_WAIT_LOB_TABLET_SPLIT_END,)\
     ACT(CREATE_INDEX_WAIT_TRANS_END,)\
     ACT(CREATE_INDEX_REPLICA_BUILD,)\
     ACT(CREATE_INDEX_VERIFY_CHECKSUM,)\