[jira] [Assigned] (HAWQ-940) Kerberos Ticket Expired for LibYARN Operations

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

     [ https://issues.apache.org/jira/browse/HAWQ-940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lin Wen reassigned HAWQ-940:
----------------------------

    Assignee: Lin Wen  (was: Lei Chang)

> Kerberos Ticket Expired for LibYARN Operations
> ----------------------------------------------
>
>                 Key: HAWQ-940
>                 URL: https://issues.apache.org/jira/browse/HAWQ-940
>             Project: Apache HAWQ
>          Issue Type: Bug
>          Components: libyarn
>            Reporter: Lin Wen
>            Assignee: Lin Wen
>             Fix For: 2.0.1.0-incubating
>
>
> HAWQ's libhdfs3 and libyarn use a same kerberos keyfile. 
> Whenever a hdfs operation is triggered, a function named login() is called, in login() function, this ticket is initialized by "kinit". 
> But for libyarn, login() function is only called during the resource broker process starts. So if HAWQ starts up and there is no query for a long period(24 hours in kerberos's configure file, krb.conf), this ticket will expire, and HAWQ fails to register itself in Hadoop YARN.



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