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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1201) TestAMAuthorization fails with local hostname cannot be resolved
Date Thu, 01 May 2014 22:37:23 GMT

    [ https://issues.apache.org/jira/browse/YARN-1201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13987102#comment-13987102
] 

Wangda Tan commented on YARN-1201:
----------------------------------

[~vinodkv], localhost cannot be resolved would be happened when it doesn't contain a proper
domain name, the mechanism used by Java to resolve a host is similar to "nslookup <hostname>".
Domain name not configured is a common case when user try Hadoop in local(vm).
As [~djp] suggested, I think we'd better throw a meaningful message rather than NPE when hostname
cannot be resolved.

> TestAMAuthorization fails with local hostname cannot be resolved
> ----------------------------------------------------------------
>
>                 Key: YARN-1201
>                 URL: https://issues.apache.org/jira/browse/YARN-1201
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.1.0-beta
>         Environment: SUSE Linux Enterprise Server 11 (x86_64)
>            Reporter: Nemon Lou
>            Assignee: Wangda Tan
>            Priority: Minor
>         Attachments: YARN-1201.patch
>
>
> When hostname is 158-1-131-10, TestAMAuthorization fails.
> {code}
> Running org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization
> Tests run: 4, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 14.034 sec <<<
FAILURE! - in org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization
> testUnauthorizedAccess[0](org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization)
 Time elapsed: 3.952 sec  <<< ERROR!
> java.lang.NullPointerException: null
>         at org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.testUnauthorizedAccess(TestAMAuthorization.java:284)
> testUnauthorizedAccess[1](org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization)
 Time elapsed: 3.116 sec  <<< ERROR!
> java.lang.NullPointerException: null
>         at org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.testUnauthorizedAccess(TestAMAuthorization.java:284)
> Results :
> Tests in error:
>   TestAMAuthorization.testUnauthorizedAccess:284 NullPointer
>   TestAMAuthorization.testUnauthorizedAccess:284 NullPointer
> Tests run: 4, Failures: 0, Errors: 2, Skipped: 0
> {code}



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