[SCN] fix farm failure

src/sql/executor/ob_executor.cpp

@@ -59,6 +59,7 @@ int ObExecutor::execute_plan(ObExecContext &ctx)
   ObSQLSessionInfo *session_info = ctx.get_my_session();
   ObPhysicalPlanCtx *plan_ctx = ctx.get_physical_plan_ctx();
   int64_t batched_stmt_cnt = ctx.get_sql_ctx()->multi_stmt_item_.get_batched_stmt_cnt();
+  ctx.set_use_temp_expr_ctx_cache(true);
   // If the batch execution is rewritten by insert multi values, there is no need to repack multiple times
   if (ctx.get_sql_ctx()->multi_stmt_item_.is_ins_multi_val_opt()) {
     batched_stmt_cnt = 0;

src/sql/executor/ob_remote_executor_processor.cpp

@@ -183,6 +183,10 @@ int ObRemoteBaseExecuteP<T>::base_before_process(int64_t tenant_schema_version,
       if (is_schema_error(ret)) {
         ret = OB_ERR_WAIT_REMOTE_SCHEMA_REFRESH; // 重写错误码，使得scheduler端能等待远端schema刷新并重试
       }
+    } else if (-1 == tenant_schema_version && ret == OB_TENANT_NOT_EXIST) {
+      // fix bug: https://work.aone.alibaba-inc.com/issue/45890226
+      // 控制端重启observer，导致租户schema没刷出来，发送过来的schema_version异常, 让对端重试
+      ret = OB_ERR_WAIT_REMOTE_SCHEMA_REFRESH;
     } else {
       if (OB_SCHEMA_ERROR == ret || OB_SCHEMA_EAGAIN == ret) {
         ret = OB_ERR_WAIT_REMOTE_SCHEMA_REFRESH; // 针对OB_SCHEMA_ERROR 和OB_SCHEMA_EAGAIN这两个错误码，远程执行暂时先考虑重写，等待远端schema刷新并重试
@@ -422,6 +426,7 @@ int ObRemoteBaseExecuteP<T>::execute_remote_plan(ObExecContext &exec_ctx,
   ObSQLSessionInfo *session = exec_ctx.get_my_session();
   ObPhysicalPlanCtx *plan_ctx = exec_ctx.get_physical_plan_ctx();
   ObOperator *se_op = nullptr; // static engine operator
+  exec_ctx.set_use_temp_expr_ctx_cache(true);
   if (OB_ISNULL(plan_ctx) || OB_ISNULL(session)) {
     ret = OB_ERR_UNEXPECTED;
     LOG_ERROR("op is NULL", K(ret), K(plan_ctx), K(session));
@@ -629,6 +634,7 @@ int ObRemoteBaseExecuteP<T>::execute_with_sql(ObRemoteTask &task)
   bool enable_sql_audit = GCONF.enable_sql_audit;
   ObPhysicalPlan *plan = nullptr;
   ObPhysicalPlanCtx *plan_ctx = nullptr;
+  exec_ctx_.set_use_temp_expr_ctx_cache(false);
   int inject_err_no = EVENT_CALL(EventTable::EN_REMOTE_EXEC_ERR);
   if (0 != inject_err_no) {
     ret = inject_err_no;

src/sql/executor/ob_remote_executor_processor.h

@@ -14,12 +14,13 @@
 #define OBDEV_SRC_SQL_EXECUTOR_OB_REMOTE_EXECUTOR_PROCESSOR_H_
 #include "sql/executor/ob_executor_rpc_processor.h"
 #include "sql/plan_cache/ob_cache_object_factory.h"
+
+namespace oceanbase
+{
 namespace observer
 {
 struct ObGlobalContext;
 }
-namespace oceanbase
-{
 namespace sql
 {
 template <typename T>

src/sql/executor/ob_task_info.cpp

@@ -19,6 +19,10 @@
 using namespace oceanbase::common;
 using namespace oceanbase::sql;
 
+namespace oceanbase
+{
+namespace sql
+{
 ObTaskInfo::ObTaskInfo(common::ObIAllocator &allocator)
   : range_location_(allocator),
     task_split_type_(ObTaskSpliter::INVALID_SPLIT),
@@ -88,3 +92,5 @@ int ObTaskInfo::ObRangeLocation::assign(const ObTaskInfo::ObRangeLocation &range
   return ret;
 }
 
+}
+}