chore: Adjust default large query memory

src/compute/src/memory/config.rs

@@ -35,7 +35,7 @@ const STORAGE_SHARED_BUFFER_MEMORY_PROPORTION: f64 = 0.3;
 const STORAGE_DEFAULT_HIGH_PRIORITY_BLOCK_CACHE_RATIO: usize = 50;
 
 /// Since the new feature prefetch does not cost much memory, we set a large value by default for performance. If we meet OOM during long time batch query, we shall reduce this configuration.
-const STORAGE_DEFAULT_LARGE_QUERY_MEMORY_USAGE_MB: usize = 32 * 1024;
+const STORAGE_DEFAULT_LARGE_QUERY_MEMORY_USAGE_MB: usize = 2 * 1024;
 
 /// Each compute node reserves some memory for stack and code segment of processes, allocation
 /// overhead, network buffer, etc. based on `SYSTEM_RESERVED_MEMORY_PROPORTION`. The reserve memory
@@ -118,6 +118,7 @@ pub fn storage_memory_config(
     );
 
     let total_calculated_mb = block_cache_capacity_mb
+        + large_query_memory_usage_mb
         + meta_cache_capacity_mb
         + shared_buffer_capacity_mb
         + data_file_cache_ring_buffer_capacity_mb