[doris] 02/03: [bugfix](memoryleak) close expr after it is pushdown to storage layer (#18849) (#18852)

[morningman]

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morningman pushed a commit to branch branch-2.0-alpha
in repository https://gitbox.apache.org/repos/asf/doris.git

commit 1920da60013bd7ec45a45a8ee1762a88592d577a
Author: yiguolei <676222...@qq.com>
AuthorDate: Fri Apr 21 05:21:16 2023 +0800

    [bugfix](memoryleak) close expr after it is pushdown to storage layer 
(#18849) (#18852)
    
    Co-authored-by: yiguolei <yiguo...@gmail.com>
---
 be/src/vec/exec/scan/vscan_node.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/be/src/vec/exec/scan/vscan_node.cpp 
b/be/src/vec/exec/scan/vscan_node.cpp
index 22378d2744..553a611076 100644
--- a/be/src/vec/exec/scan/vscan_node.cpp
+++ b/be/src/vec/exec/scan/vscan_node.cpp
@@ -638,6 +638,16 @@ Status VScanNode::_normalize_predicate(VExpr* 
conjunct_expr_root, VExpr** output
                 *output_expr = conjunct_expr_root;
                 return Status::OK();
             } else {
+                if (left_child == nullptr) {
+                    conjunct_expr_root->children()[0]->close(
+                            _state, *_vconjunct_ctx_ptr,
+                            (*_vconjunct_ctx_ptr)->get_function_state_scope());
+                }
+                if (right_child == nullptr) {
+                    conjunct_expr_root->children()[1]->close(
+                            _state, *_vconjunct_ctx_ptr,
+                            (*_vconjunct_ctx_ptr)->get_function_state_scope());
+                }
                 // here only close the and expr self, do not close the child
                 conjunct_expr_root->set_children({});
                 conjunct_expr_root->close(_state, *_vconjunct_ctx_ptr,


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