Update tiflash/tiflash-mintso-scheduler.md

Co-authored-by: Grace Cai <[email protected]>

Author: 2 people

tiflash/tiflash-mintso-scheduler.md

@@ -55,7 +55,7 @@ To avoid deadlock, TiFlash introduces the following two levels of thread limits:
 
 The soft limit and hard limit work together to avoid deadlock as follows: the soft limit restricts the total number of threads used by all queries, enabling full use of resources while avoiding thread resource exhaustion; the hard limit ensures that in any situation, at least one query in the system can break the soft limit and continue to acquire thread resources and run, thus avoiding deadlock. As long as the number of threads does not exceed the hard limit, there will always be one query in the system where all its MPP tasks can be executed normally, thus preventing deadlock.
 
-The goal of the MinTSO scheduler is to control the number of system threads while ensuring that there is always one and only one special query in the system, where all its MPP tasks can be scheduled. The MinTSO Scheduler is a fully distributed scheduler, with each TiFlash node scheduling MPP tasks based only on its own information. Therefore, all MinTSO schedulers on TiFlash nodes need to identify the same "special" query. In TiDB, each query carries a read timestamp (`start_ts`), and the MinTSO scheduler defines the "special" query as the query with the smallest `start_ts` on the current TiFlash node. Based on the principle that the global minimum is also the local minimum, the "special" query selected by all TiFlash nodes must be the same, called the MinTSO query.
+The goal of the MinTSO scheduler is to control the number of system threads while ensuring that there is always one and only one special query in the system, where all its MPP tasks can be scheduled. The MinTSO scheduler is a fully distributed scheduler, with each TiFlash node scheduling MPP tasks based only on its own information. Therefore, all MinTSO schedulers on TiFlash nodes need to identify the same "special" query. In TiDB, each query carries a read timestamp (`start_ts`), and the MinTSO scheduler defines the "special" query as the query with the smallest `start_ts` on the current TiFlash node. Based on the principle that the global minimum is also the local minimum, the "special" query selected by all TiFlash nodes must be the same, called the MinTSO query.
 
 The scheduling process of the MinTSO Scheduler is as follows: