[ https://issues.apache.org/jira/browse/YARN-5901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Haibo Chen updated YARN-5901: ----------------------------- Attachment: YARN-5901.03.patch > 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, YARN-5901.03.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