| enable_nereids_planner | Whether to enable the new optimizer | TRUE | For scenarios such as low-version upgrades, initially set to false; after upgrading, it can be set to true |
| enable_nereids_dml | Whether to enable DML support for the new optimizer | TRUE | For scenarios such as low-version upgrades, initially set to false; after upgrading, it can be set to true |
| parallel_pipeline_task_num | Pipeline parallelism | 0 | For scenarios such as low-version upgrades, this value was previously set to a fixed value; after upgrading, it can be set to 0, indicating that the system's adaptive strategy determines the parallelism |
| runtime_filter_mode | Runtime Filter type | GLOBAL | For scenarios such as low-version upgrades, this value was NONE, indicating that Runtime Filter was not enabled; after upgrading, it can be set to GLOBAL, indicating that Runtime Filter is enabled by default |