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From "Bill Havanki (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (ACCUMULO-2422) Backup master can miss acquiring lock when primary exits
Date Fri, 28 Feb 2014 18:14:19 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-2422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bill Havanki reopened ACCUMULO-2422:
------------------------------------


I think Eric's fix should be fine, but I want to do more testing, and possibly add some logging
and refinement.

> Backup master can miss acquiring lock when primary exits
> --------------------------------------------------------
>
>                 Key: ACCUMULO-2422
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2422
>             Project: Accumulo
>          Issue Type: Bug
>          Components: fate, master
>    Affects Versions: 1.5.1
>            Reporter: Bill Havanki
>            Assignee: Bill Havanki
>            Priority: Critical
>              Labels: failover, locking
>             Fix For: 1.6.0, 1.5.2
>
>
> While running randomwalk tests with agitation for the 1.5.1 release, I've seen situations
where a backup master that is eligible to grab the master lock continues to wait. When this
condition arises and the other master restarts, both wait for the lock without success.
> I cannot reproduce the problem reliably, and I think more investigation is needed to
see what circumstances could be causing the problem.



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