executeQuery: Code: 240, e.displayText() = DB::ErrnoException: Allocator: Cannot mremap memory chunk from 64.00 MiB to 128.00 MiB., errno: 12, strerror: Cannot allocate memory (version 21.1.9.41 (official build))
服务器的内存足够的，max_memory_usage ，max_bytes_before_external_group_by ，max_server——memory_usage 都改过，没效果
