diff --git a/be/src/exec/assert_num_rows_node.cpp b/be/src/exec/assert_num_rows_node.cpp
index 26112f65d1..407aeb0d95 100644
--- a/be/src/exec/assert_num_rows_node.cpp
+++ b/be/src/exec/assert_num_rows_node.cpp
@@ -45,6 +45,8 @@ Status AssertNumRowsNode::prepare(RuntimeState* state) {
 Status AssertNumRowsNode::open(RuntimeState* state) {
     SCOPED_TIMER(_runtime_profile->total_time_counter());
     RETURN_IF_ERROR(ExecNode::open(state));
+    // ISSUE-3435
+    RETURN_IF_ERROR(child(0)->open(state));
     return Status::OK();
 }