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chaosju commented on YARN-10806: -------------------------------- I dont know why rmApp.getAppAttempts() is empty? > Dispatcher thread crash caused by NoSuchElementException > --------------------------------------------------------- > > Key: YARN-10806 > URL: https://issues.apache.org/jira/browse/YARN-10806 > Project: Hadoop YARN > Issue Type: Bug > Affects Versions: 3.1.2 > Reporter: chaosju > Priority: Major > > line 1091: RMAppAttempt previousFailedAttempt = > rmApp.getAppAttempts().values().iterator().next(); > if rmApp.getAppAttempts() is empty , the values().iterator().next() will > throw java.util.NoSuchElementException; > Error Stack: > 2021-06-03 08:18:18,586 FATAL org.apache.hadoop.yarn.event.AsyncDispatcher: > Error in dispatcher thread > java.util.NoSuchElementException > at > java.base/java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:721) > at > java.base/java.util.LinkedHashMap$LinkedValueIterator.next(LinkedHashMap.java:746) > at > java.base/java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1047) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$ApplicationAttemptEventDispatcher.handle(ResourceManager.java:1091) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$ApplicationAttemptEventDispatcher.handle(ResourceManager.java:1055) > at > org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:219) > at > org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:133) > at java.base/java.lang.Thread.run(Thread.java:834) -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org