fix reserve_mem_mode for mini compaction

src/storage/compaction/ob_tablet_merge_task.cpp

@@ -1160,6 +1160,14 @@ int ObTabletMergeTask::process()
   return ret;
 }
 
+ObTxTableMergeDag::~ObTxTableMergeDag()
+{
+  if (param_.is_reserve_mode_) {
+    MTL(ObTenantCompactionMemPool *)->release_reserve_mem();
+    FLOG_INFO("TxTable Compaction Leave the Reserve Mode", K(param_));
+  }
+}
+
 ObTabletMiniMergeDag::~ObTabletMiniMergeDag()
 {
   if (param_.is_reserve_mode_) {

src/storage/compaction/ob_tablet_merge_task.h

@@ -331,18 +331,25 @@ static void prepare_allocator(
   class DAG_NAME : public ObTabletMergeDag {                                   \
   public:                                                                      \
     DAG_NAME() : ObTabletMergeDag(DAG_TYPE) {}                                 \
-    ~DAG_NAME() = default;                                                     \
+    virtual ~DAG_NAME() = default;                                             \
   };
 
-DEFINE_MERGE_DAG(ObTxTableMergeDag, share::ObDagType::DAG_TYPE_TX_TABLE_MERGE);
 DEFINE_MERGE_DAG(ObTabletMajorMergeDag, share::ObDagType::DAG_TYPE_MAJOR_MERGE);
 
+class ObTxTableMergeDag : public ObTabletMergeDag {
+public:
+  ObTxTableMergeDag()
+    : ObTabletMergeDag(share::ObDagType::DAG_TYPE_TX_TABLE_MERGE)
+  {}
+  virtual ~ObTxTableMergeDag();
+};
+
 class ObTabletMiniMergeDag : public ObTabletMergeDag {
 public:
   ObTabletMiniMergeDag()
     : ObTabletMergeDag(share::ObDagType::DAG_TYPE_MINI_MERGE)
   {}
-  ~ObTabletMiniMergeDag();
+  virtual ~ObTabletMiniMergeDag();
 };
 
 } // namespace compaction