[
https://issues.apache.org/jira/browse/TEZ-4315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
junbiao chen updated TEZ-4315:
------------------------------
Summary: There is potential risk of ConcurrentModificationException when
assigning pending task to container (was: There is potential risk of
ConcurrentModificationException when scheduling task for container)
> There is potential risk of ConcurrentModificationException when assigning
> pending task to container
> ---------------------------------------------------------------------------------------------------
>
> Key: TEZ-4315
> URL: https://issues.apache.org/jira/browse/TEZ-4315
> Project: Apache Tez
> Issue Type: Improvement
> Affects Versions: 0.9.1, 0.10.0
> Reporter: junbiao chen
> Priority: Major
>
> When assigning task to container,YarnTaskSchedulerService need to traverse
> pending cookieContainerRequests(stored in LinkedHashSet) to select one that
> mathing the container by calling method getMatchingRequestWithoutPriority. In
> the meantime, YarnTaskSchedulerService will also remove the completed
> cookieContainerRequest from LinkedHashSet by calling method
> removeTaskRequest.This may cause ConcurrentModificationException,because
> LinkedHashSet is not thread-safe.
>
> [https://github.com/apache/tez/pull/133]
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
