diff --git a/src/rootserver/ddl_task/ob_column_redefinition_task.cpp b/src/rootserver/ddl_task/ob_column_redefinition_task.cpp
index 36070951d6..be8721694c 100644
--- a/src/rootserver/ddl_task/ob_column_redefinition_task.cpp
+++ b/src/rootserver/ddl_task/ob_column_redefinition_task.cpp
@@ -327,9 +327,10 @@ int ObColumnRedefinitionTask::copy_table_indexes()
             } else if (OB_ISNULL(index_schema)) {
               ret = OB_ERR_SYS;
               LOG_WARN("error sys, index schema must not be nullptr", K(ret), K(tenant_id_), K(index_ids.at(i)));
-            } else if (index_schema->can_read_index()) {
-              // index is already built
+            } else if (is_final_index_status(index_schema->get_index_status())) {
+              // index status is final
               need_rebuild_index = false;
+              LOG_INFO("index status is final", K(ret), K(task_id_), K(index_id), K(need_rebuild_index));
             } else {
               create_index_arg.index_type_ = index_schema->get_index_type();
               ObCreateDDLTaskParam param(tenant_id_,
diff --git a/src/rootserver/ddl_task/ob_ddl_task.cpp b/src/rootserver/ddl_task/ob_ddl_task.cpp
index 961367db6d..70d68938fe 100644
--- a/src/rootserver/ddl_task/ob_ddl_task.cpp
+++ b/src/rootserver/ddl_task/ob_ddl_task.cpp
@@ -947,12 +947,15 @@ int ObDDLTask::switch_status(const ObDDLTaskStatus new_status, const bool enable
   const ObDDLTaskStatus old_status = task_status_;
   const bool error_need_retry = OB_SUCCESS != ret_code && is_error_need_retry(ret_code);
   if (OB_TMP_FAIL(check_ddl_task_is_cancel(trace_id_, is_cancel))) {
-    LOG_WARN("check ddl task is cancel failed", K(tmp_ret), K_(trace_id));
+    LOG_WARN("check ddl task is cancel failed", K(tmp_ret), K(task_id_), K(parent_task_id_), K_(trace_id));
   }
   if (is_cancel) {
     real_ret_code = (OB_SUCCESS == ret_code || error_need_retry) ? OB_CANCELED : ret_code;
+    FLOG_INFO("ddl task is canceled", K(task_id_), K(parent_task_id_), K(object_id_),
+        K(target_object_id_), K(ret_code), K(error_need_retry), K(real_ret_code));
   } else if (SUCCESS == old_status || error_need_retry) {
-    LOG_INFO("error code found, but execute again", K(ret_code), K(ret_code_), K(old_status), K(new_status), K(err_code_occurence_cnt_));
+    LOG_INFO("error code found, but execute again", K(task_id_), K(parent_task_id_),
+        K(ret_code), K(ret_code_), K(old_status), K(new_status), K(err_code_occurence_cnt_));
     real_new_status = old_status;
     real_ret_code = OB_SUCCESS;
   }
@@ -967,12 +970,12 @@ int ObDDLTask::switch_status(const ObDDLTaskStatus new_status, const bool enable
     LOG_WARN("check if tenant has been dropped failed", K(ret), K(tenant_id_));
   } else if (is_tenant_dropped) {
     need_retry_ = false;
-    LOG_INFO("tenant has been dropped, exit anyway", K(ret), K(tenant_id_));
+    LOG_INFO("tenant has been dropped, exit anyway", K(ret), K(task_id_), K(parent_task_id_), K(tenant_id_));
   } else if (OB_FAIL(ObAllTenantInfoProxy::is_standby_tenant(&root_service->get_sql_proxy(), tenant_id_, is_standby_tenant))) {
     LOG_WARN("check is standby tenant failed", K(ret), K(tenant_id_));
   } else if (is_standby_tenant) {
     need_retry_ = false;
-    LOG_INFO("tenant is standby, exit anyway", K(ret), K(tenant_id_));
+    LOG_INFO("tenant is standby, exit anyway", K(ret), K(task_id_), K(parent_task_id_), K(tenant_id_));
   } else if (OB_FAIL(trans.start(&root_service->get_sql_proxy(), tenant_id_))) {
     LOG_WARN("start transaction failed", K(ret));
   } else {
diff --git a/src/rootserver/ddl_task/ob_table_redefinition_task.cpp b/src/rootserver/ddl_task/ob_table_redefinition_task.cpp
index b809f60c59..d5eefd7920 100755
--- a/src/rootserver/ddl_task/ob_table_redefinition_task.cpp
+++ b/src/rootserver/ddl_task/ob_table_redefinition_task.cpp
@@ -461,9 +461,10 @@ int ObTableRedefinitionTask::copy_table_indexes()
             } else if (OB_ISNULL(index_schema)) {
               ret = OB_ERR_SYS;
               LOG_WARN("error sys, index schema must not be nullptr", K(ret), K(index_ids.at(i)));
-            } else if (index_schema->can_read_index()) {
-              // index is already built
+            } else if (is_final_index_status(index_schema->get_index_status())) {
+              // index status is final
               need_rebuild_index = false;
+              LOG_INFO("index status is final", K(ret), K(task_id_), K(index_id), K(need_rebuild_index));
             } else {
               create_index_arg.index_type_ = index_schema->get_index_type();
               ObCreateDDLTaskParam param(tenant_id_,
diff --git a/src/share/ob_ddl_error_message_table_operator.cpp b/src/share/ob_ddl_error_message_table_operator.cpp
index 3ca6c3267f..8b6379259e 100644
--- a/src/share/ob_ddl_error_message_table_operator.cpp
+++ b/src/share/ob_ddl_error_message_table_operator.cpp
@@ -331,7 +331,7 @@ int ObDDLErrorMessageTableOperator::report_ddl_error_message(const ObBuildDDLErr
       ret = OB_ERR_UNEXPECTED;
       LOG_WARN("unexpected affected rows", K(ret), K(affected_rows));
     } else {
-      LOG_INFO("process ddl error message report success", K(ret), K(schema_version), K(table_id), K(addr), K(error_message), K(update_sql.ptr()));
+      LOG_INFO("process ddl error message report success", K(ret), K(task_id), K(schema_version), K(table_id), K(addr), K(error_message), K(update_sql.ptr()));
     }
   }
   return ret;