ConcurrentModificationException in TriggerValidatorRunnable stops trigger processing

<12>1 2019-11-14T00:31:12.187Z hiveserver2-0.hiveserver2-service.compute-1572769905-6965.svc.cluster.local hiveserver2 1 fa2f30b6-ffb3-11e9-93ba-0a257c2413a2 [mdc@18060 class="tez.TriggerValidatorRunnable" level="WARN" thread="TriggerValidator"] TriggerValidatorRunnable caught exception.<12>1 2019-11-14T00:31:12.187Z hiveserver2-0.hiveserver2-service.compute-1572769905-6965.svc.cluster.local hiveserver2 1 fa2f30b6-ffb3-11e9-93ba-0a257c2413a2 [mdc@18060 class="tez.TriggerValidatorRunnable" level="WARN" thread="TriggerValidator"] TriggerValidatorRunnable caught exception.java.util.ConcurrentModificationException at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966) at java.util.LinkedList$ListItr.next(LinkedList.java:888) at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1044) at org.apache.hadoop.hive.ql.exec.tez.TriggerValidatorRunnable.run(TriggerValidatorRunnable.java:49) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)