Tsuyoshi OZAWA commented on YARN-2304:

Hi Zhijie, thank you for the comment.

 Is it likely that some other test which uses JerseyTest has hung, such that 
the following tests cannot bind the same port?

Yes, I thought other test which uses JerseyTest has hung and fails to cleanup. 
I checked recents commits to confirm it since the end of June, but cannot find 
the reason for now. I wrote my thought on YARN-2304: 

I think there are two kind of possibility - 1. new added tests recently on 
Web-Services didn't do proper cleanup as you mentioned 2. infra change for 
Jenkins CI influences and the problem appear.
As I mentioned on YARN-2304, we don't support parallel test now because 
JerseyTest 1.9 doesn't support it. If the test run in parallel on single 
machine, it fails.

I don't know how Jenkins infra changed, so it's one of possibility and just my 

> TestRMWebServices* fails intermittently
> ---------------------------------------
>                 Key: YARN-2304
>                 URL: https://issues.apache.org/jira/browse/YARN-2304
>             Project: Hadoop YARN
>          Issue Type: Test
>            Reporter: Tsuyoshi OZAWA
>         Attachments: test-failure-log-RMWeb.txt
> The test fails intermittently because of bind exception.

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