[YARN-9461] TestRMWebServicesDelegationTokenAuthentication.testCancelledDelegationToken fails with HTTP 400

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Component/s: resourcemanager, test
• Hadoop Flags: Reviewed
• Assignee: Peter Bacsko
• Reporter: Peter Bacsko
• Created: 08/Apr/19 13:56
• Updated: 27/Aug/19 07:51
• Resolved: 16/Aug/19 10:32

Description

The test TestRMWebServicesDelegationTokenAuthentication.testCancelledDelegationToken sometimes fails with the following error:

java.io.IOException: Server returned HTTP response code: 400 for URL: http://localhost:8088/ws/v1/cluster/delegation-token
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesDelegationTokenAuthentication.cancelDelegationToken(TestRMWebServicesDelegationTokenAuthentication.java:462)
	at org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesDelegationTokenAuthentication.testCancelledDelegationToken(TestRMWebServicesDelegationTokenAuthentication.java:283)

The problem is that for whatever reason, Jetty seems to execute the token cancellation REST call twice. First we get HTTP 200 OK, but the second request fails with HTTP 400 Bad Request.

The MockRM instance is static. Something could be a problem in this class and it turned out that using separate MockRM instances solves the flakiness.

Issue Links

• is duplicated by: YARN-9786 testCancelledDelegationToken fails intermittently