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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-4069) Services failing to renew Kerberos ticket
Date Thu, 03 Dec 2015 01:08:10 GMT
Josh Elser created ACCUMULO-4069:
------------------------------------

             Summary: Services failing to renew Kerberos ticket
                 Key: ACCUMULO-4069
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4069
             Project: Accumulo
          Issue Type: Bug
          Components: gc, master, monitor, tserver
    Affects Versions: 1.7.0
            Reporter: Josh Elser
            Assignee: Josh Elser
            Priority: Blocker
             Fix For: 1.7.1


Got a report from a user that Accumulo services were dying after a period of time that was
suspiciously similar to the Kerberos ticket lifetime.

A Kerberos ticket lifetime is the amount of time that the ticket is valid (obtained from password
or keytab). There is also a renewable lifetime associate with each ticket. Within the renewable
lifetime duration, clients can "renew" their ticket for another "ticket lifetime" duration.
For each, a lifetime of one day and a renewable lifetime of seven days: a ticket is valid
for one day, but clients can renew that ticket up to 6 days after the original ticket expires.

I do recall seeing a line of code in our services that has a comment saying it should spawn
a thread specifically for this purpose, but I don't ever recall seeing that thread in thread
dumps. My hunch is that the thread just isn't getting launched and we're not doing renewals



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