(doris) branch spill_and_reserve updated: [fix](scanner) should check _scanner_ctx is nullptr (#47195)

[yiguolei]

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yiguolei pushed a commit to branch spill_and_reserve
in repository https://gitbox.apache.org/repos/asf/doris.git


The following commit(s) were added to refs/heads/spill_and_reserve by this push:
     new 1164a063abe [fix](scanner) should check _scanner_ctx is nullptr 
(#47195)
1164a063abe is described below

commit 1164a063abe05130f7256c526849fafebf855a1f
Author: Jerry Hu <hushengg...@selectdb.com>
AuthorDate: Sat Jan 18 19:29:40 2025 +0800

    [fix](scanner) should check _scanner_ctx is nullptr (#47195)
---
 be/src/pipeline/exec/scan_operator.cpp | 1 +
 be/src/pipeline/exec/scan_operator.h   | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/be/src/pipeline/exec/scan_operator.cpp 
b/be/src/pipeline/exec/scan_operator.cpp
index 58f9c9b755c..4860dbc4d63 100644
--- a/be/src/pipeline/exec/scan_operator.cpp
+++ b/be/src/pipeline/exec/scan_operator.cpp
@@ -1276,6 +1276,7 @@ Status 
ScanOperatorX<LocalStateType>::get_block(RuntimeState* state, vectorized:
         return Status::OK();
     }
 
+    DCHECK(local_state._scanner_ctx != nullptr);
     RETURN_IF_ERROR(local_state._scanner_ctx->get_block_from_queue(state, 
block, eos, 0));
 
     local_state.reached_limit(block, eos);
diff --git a/be/src/pipeline/exec/scan_operator.h 
b/be/src/pipeline/exec/scan_operator.h
index d6cd2806db5..fdab332893f 100644
--- a/be/src/pipeline/exec/scan_operator.h
+++ b/be/src/pipeline/exec/scan_operator.h
@@ -389,7 +389,10 @@ public:
 
     void set_low_memory_mode(RuntimeState* state) override {
         auto& local_state = get_local_state(state);
-        local_state._scanner_ctx->clear_free_blocks();
+
+        if (local_state._scanner_ctx) {
+            local_state._scanner_ctx->clear_free_blocks();
+        }
     }
 
     int64_t get_push_down_count() const { return _push_down_count; }


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