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Date: Fri, 30 Aug 2013 14:19:51 +0000 (UTC)
From: "Gary Tully (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Message-ID: <JIRA.12666328.1377872361847.60336.1377872391564@arcas>
In-Reply-To: <JIRA.12666328.1377872361847@arcas>
References: <JIRA.12666328.1377872361847@arcas>
Subject: [jira] [Created] (AMQ-4705) Add keep alive support to shared file
 locker
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Gary Tully created AMQ-4705:
-------------------------------

             Summary: Add keep alive support to shared file locker
                 Key: AMQ-4705
                 URL: https://issues.apache.org/jira/browse/AMQ-4705
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.8.0
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.9.0


issue on nsfv4 with a master slave configuration, where both the slave and =
the master could obtain a lock.
The following events occurred:

* master locks the file - does no more i/o to it =E2=80=93 it's passive wrt=
 the lock
* slave asks every 10 seconds if it can get the lock nfs come back and say =
no, someone has it
* nfs dies not nicely
 ** nfsv4 is stateful - no callback for locks. It has a grace period 30 sec=
onds to let all clients had locks reclaims locked
* master does not realize it needs to reclaim the lock and continues under =
the assumption it has the lock.
* After 30 sec grace period, slave comes in and asks for the lock and it re=
ceives it.

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