You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@tez.apache.org by "junbiao chen (Jira)" <ji...@apache.org> on 2021/06/24 08:31:00 UTC

[jira] [Created] (TEZ-4315) There is potential risk of ConcurrentModificationException when scheduling task for container

junbiao chen created TEZ-4315:
---------------------------------

             Summary: There is potential risk of ConcurrentModificationException when scheduling task for container
                 Key: TEZ-4315
                 URL: https://issues.apache.org/jira/browse/TEZ-4315
             Project: Apache Tez
          Issue Type: Improvement
    Affects Versions: 0.10.0, 0.9.1
            Reporter: junbiao chen


When assigning task to container,YarnTaskSchedulerService need to traverse pending  cookieContainerRequests(stored in LinkedHashSet) to select one that mathing the container. In the meantime, YarnTaskSchedulerService will also remove the completed cookieContainerRequest from LinkedHashSet.This may cause ConcurrentModificationException,because  LinkedHashSet is not thread-safe.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)