[ 
https://issues.apache.org/jira/browse/YARN-5901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15713216#comment-15713216
 ] 

Haibo Chen commented on YARN-5901:
----------------------------------

Will update the patch shortly.

> Fix race condition in TestGetGroups beforeclass setup()
> -------------------------------------------------------
>
>                 Key: YARN-5901
>                 URL: https://issues.apache.org/jira/browse/YARN-5901
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>              Labels: unittest
>         Attachments: YARN-5901.02.patch, yarn5901.001.patch
>
>
> In TestGetGroups, the class-level setup method spins up, in a child thread, a 
> resource manager that Yarn clients can talk to. But it checks whether the 
> resource manager is fully started by doing resourcemanager.getServiceState() 
> == STATE.STARTED. This is not reliable since resourcemanager.start() will 
> first trigger service state change in RM, and then starts up all the services 
> added to RM. We need to wait for RM to fully start before YARN clients  can 
> send requests. Otherwise, the tests can fail due to "connection refused"  
> exception when the main thread sends out client requests to RM and if the RPC 
> server has not fired up in the child thread.  



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

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

Reply via email to