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fix: create TaskTracker failed causes HashMap to deadlock

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tjq 2023-01-27 13:13:56 +08:00
parent fb2046649e
commit a25eac67c7
1 changed files with 5 additions and 2 deletions
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7
powerjob-worker/src/main/java/tech/powerjob/worker/core/tracker/manager/LightTaskTrackerManager.java
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@ -21,8 +21,11 @@ public class LightTaskTrackerManager {
return INSTANCE_ID_2_TASK_TRACKER.get(instanceId); return INSTANCE_ID_2_TASK_TRACKER.get(instanceId);
} }
public static LightTaskTracker removeTaskTracker(Long instanceId) { public static void removeTaskTracker(Long instanceId) {
return INSTANCE_ID_2_TASK_TRACKER.remove(instanceId); // 忽略印度的 IDE 警告，这个判断非常有用！！！不加这个判断会导致：如果创建 TT（先执行 computeIfAbsent 正在将TT添加到 HashMap） 时报错，TT 主动调用 destroy 销毁（从 HashMap移除该 TT）时死锁
if (INSTANCE_ID_2_TASK_TRACKER.containsKey(instanceId)) {
INSTANCE_ID_2_TASK_TRACKER.remove(instanceId);
}
} }
public static void atomicCreateTaskTracker(Long instanceId, Function<Long, LightTaskTracker> creator) { public static void atomicCreateTaskTracker(Long instanceId, Function<Long, LightTaskTracker> creator) {