[jira] [Updated] (YARN-2894) When ACL's are enabled, if RM switches then application can not be viewed from web.

["Rohith (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-2894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rohith updated YARN-2894:
-------------------------
    Summary: When ACL's are enabled, if RM switches then application can not be viewed from web.  (was: Disallow binding of aclManagers while starting RMWebApp)

I updated summary as per defect description.

> When ACL's are enabled, if RM switches then application can not be viewed from web.
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-2894
>                 URL: https://issues.apache.org/jira/browse/YARN-2894
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Rohith
>            Assignee: Rohith
>             Fix For: 2.7.0
>
>
> Binding aclManager to RMWebApp would cause problem if RM is switched. There could be some validation check may fail.
> I think , we should not bind aclManager for RMWebApp, instead we should get from RM instance.
> In RMWebApp,
> {code}
>     if (rm != null) {
>       bind(ResourceManager.class).toInstance(rm);
>       bind(RMContext.class).toInstance(rm.getRMContext());
>       bind(ApplicationACLsManager.class).toInstance(
>           rm.getApplicationACLsManager());
>       bind(QueueACLsManager.class).toInstance(rm.getQueueACLsManager());
>     }
> {code}
> and in AppBlock#render below check may fail(Need to test and confirm)
> {code}
>    if (callerUGI != null
>         && !(this.aclsManager.checkAccess(callerUGI,
>                 ApplicationAccessType.VIEW_APP, app.getUser(), appID) ||
>              this.queueACLsManager.checkAccess(callerUGI,
>                 QueueACL.ADMINISTER_QUEUE, app.getQueue()))) {
>       puts("You (User " + remoteUser
>           + ") are not authorized to view application " + appID);
>       return;
>     }
> {code}



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