[HAWQ-940] Kerberos Ticket Expired for LibYARN Operations

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.0.0-incubating
• Component/s: libyarn
• Assignee: Wen Lin
• Reporter: Wen Lin
• Created: 19/Jul/16 10:01
• Updated: 18/Feb/17 05:26
• Resolved: 07/Sep/16 09:16

Description

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.

Issue Links

• links to: GitHub Pull Request #804