[jira] [Created] (YARN-8729) Node status updater thread could be lost after it restarted

["Tao Yang (JIRA)" <ji...@apache.org>]

Tao Yang created YARN-8729:
------------------------------

             Summary: Node status updater thread could be lost after it restarted
                 Key: YARN-8729
                 URL: https://issues.apache.org/jira/browse/YARN-8729
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 3.2.0
            Reporter: Tao Yang
            Assignee: Tao Yang


Today I found a lost NM whose node status updater thread was not exist after this thread restarted. In {{NodeStatusUpdaterImpl#rebootNodeStatusUpdaterAndRegisterWithRM}}, isStopped flag is not updated to be false before executing {{statusUpdater.start()}}, so that if the thread is immediately started and found isStopped==true, it will exit without any log.

Key codes in {{NodeStatusUpdaterImpl#rebootNodeStatusUpdaterAndRegisterWithRM}}:
{code:java}
 statusUpdater.join();
 registerWithRM();
 statusUpdater = new Thread(statusUpdaterRunnable, "Node Status Updater");
 statusUpdater.start();
 this.isStopped = false;   //this line should be moved before statusUpdater.start();
 LOG.info("NodeStatusUpdater thread is reRegistered and restarted");

{code}



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org