chore: k way merge sort add boundary check to prevent process crash (#16934)

assert

Signed-off-by: coldWater <[email protected]>

Author: forsaken628

src/query/pipeline/transforms/src/processors/transforms/sort/k_way_merge_sort_partition.rs

@@ -223,11 +223,15 @@ impl<R: Rows> List for Option<R> {
     }
 
     fn cmp_value<'a>(&'a self, i: usize, target: &R::Item<'a>) -> Ordering {
-        self.as_ref().unwrap().row(i).cmp(target)
+        let rows = self.as_ref().unwrap();
+        assert!(i < rows.len(), "len {}, index {}", rows.len(), i);
+        rows.row(i).cmp(target)
     }
 
     fn index(&self, i: usize) -> R::Item<'_> {
-        self.as_ref().unwrap().row(i)
+        let rows = self.as_ref().unwrap();
+        assert!(i < rows.len(), "len {}, index {}", rows.len(), i);
+        rows.row(i)
     }
 }