fix active_set bug in min tso scheduler (#7693) (#7709)

close #7692
pingcap · Jun 28, 2023 · 8765fe9 · 8765fe9
1 parent c7255f7
commit 8765fe9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/dbms/src/Flash/Mpp/MinTSOScheduler.cpp b/dbms/src/Flash/Mpp/MinTSOScheduler.cpp
@@ -186,7 +186,7 @@ bool MinTSOScheduler::scheduleImp(const UInt64 tso, const MPPQueryTaskSetPtr & q
 {
     auto needed_threads = task->getNeededThreads();
     auto check_for_new_min_tso = tso <= min_tso && estimated_thread_usage + needed_threads <= thread_hard_limit;
-    auto check_for_not_min_tso = (active_set.size() < active_set_soft_limit || tso <= *active_set.rbegin()) && (estimated_thread_usage + needed_threads <= thread_soft_limit);
+    auto check_for_not_min_tso = (active_set.size() < active_set_soft_limit || active_set.find(tso) != active_set.end()) && (estimated_thread_usage + needed_threads <= thread_soft_limit);
     if (check_for_new_min_tso || check_for_not_min_tso)
     {
         updateMinTSO(tso, false, isWaiting ? "from the waiting set" : "when directly schedule it");