diff --git a/src/sql/das/ob_das_group_scan_op.cpp b/src/sql/das/ob_das_group_scan_op.cpp
index 570c042826..6a194f7265 100644
--- a/src/sql/das/ob_das_group_scan_op.cpp
+++ b/src/sql/das/ob_das_group_scan_op.cpp
@@ -56,6 +56,12 @@ int ObDASGroupScanOp::release_op()
 {
   int ret = OB_SUCCESS;
   OZ(ObDASScanOp::release_op());
+  if (nullptr != group_lookup_op_) {
+    ObITabletScan &tsc_service = get_tsc_service();
+    if (OB_FAIL(tsc_service.revert_scan_iter(group_lookup_op_->get_lookup_storage_iter()))) {
+      LOG_WARN("revert scan iterator failed", K(ret));
+    } 
+  }
   group_lookup_op_ = NULL;
   iter_.reset();
   result_iter_ = &iter_;
@@ -97,7 +103,6 @@ int ObDASGroupScanOp::do_local_index_lookup()
     op->set_rowkey_iter(&this->iter_);
     group_lookup_op_ = op;
     result_iter_ = group_lookup_op_;
-    result_ = group_lookup_op_; //release scan iterator by result_, so need to hold lookup op by result_
     OZ(op->init(get_lookup_ctdef(),
              get_lookup_rtdef(),
              scan_ctdef_,