Fix core at plan cache ObCacheObject::pre_calculation

src/sql/engine/ob_physical_plan_ctx.cpp

@@ -86,6 +86,13 @@ ObPhysicalPlanCtx::ObPhysicalPlanCtx(common::ObIAllocator& allocator)
 ObPhysicalPlanCtx::~ObPhysicalPlanCtx()
 {}
 
+void ObPhysicalPlanCtx::restore_param_store(const int64_t original_param_cnt)
+{
+  for (int64_t i = param_store_.count(); i > original_param_cnt; --i) {
+    param_store_.pop_back();
+  }
+}
+
 int ObPhysicalPlanCtx::reserve_param_space(int64_t param_count)
 {
   int ret = OB_SUCCESS;

src/sql/engine/ob_physical_plan_ctx.h

@@ -135,6 +135,7 @@ public:
   {
     return consistency_level_;
   }
+  void restore_param_store(const int64_t param_count);
   // param store
   int reserve_param_space(int64_t param_count);
   const ParamStore& get_param_store() const

src/sql/plan_cache/ob_plan_cache.cpp

@@ -1496,6 +1496,7 @@ int ObPlanCache::get_ps_plan(
   UNUSED(stmt_id);
   ObSqlTraits sql_traits;
   ObCacheObject* cache_obj = NULL;
+  int64_t original_param_cnt = 0;
   pc_ctx.handle_id_ = ref_handle;
   if (OB_ISNULL(pc_ctx.sql_ctx_.session_info_) || OB_ISNULL(pc_ctx.sql_ctx_.schema_guard_) ||
       OB_ISNULL(pc_ctx.exec_ctx_.get_physical_plan_ctx())) {
@@ -1509,6 +1510,8 @@ int ObPlanCache::get_ps_plan(
   } else if (FALSE_IT(pc_ctx.fp_result_.cache_params_ =
                           &(pc_ctx.exec_ctx_.get_physical_plan_ctx()->get_param_store_for_update()))) {
     // do nothing
+  } else if (FALSE_IT(original_param_cnt = pc_ctx.fp_result_.cache_params_->count())) {
+    // do nothing
   } else if (OB_FAIL(construct_plan_cache_key(pc_ctx, NS_CRSR))) {
     LOG_WARN("fail to construnct plan cache key", K(ret));
   } else if (OB_FAIL(get_cache_obj(pc_ctx, cache_obj))) {
@@ -1528,6 +1531,7 @@ int ObPlanCache::get_ps_plan(
     ObPsStmtId new_stmt_id = pc_ctx.fp_result_.pc_key_.key_id_;
     pc_ctx.fp_result_.pc_key_.key_id_ = OB_INVALID_ID;
     pc_ctx.fp_result_.pc_key_.name_ = pc_ctx.raw_sql_;
+    pc_ctx.exec_ctx_.get_physical_plan_ctx()->restore_param_store(original_param_cnt);
     SQL_PC_LOG(
         DEBUG, "start to get plan by sql", K(new_stmt_id), K(pc_ctx.fp_result_.pc_key_), K(sql_pcvs_map_.size()));
     if (OB_FAIL(get_cache_obj(pc_ctx, cache_obj))) {