activemq-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3654) JDBC Master/Slave : Slave cannot acquire lock when the master loose database connection.
Date Mon, 20 Aug 2012 11:32:38 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13437795#comment-13437795
] 

Gary Tully commented on AMQ-3654:
---------------------------------

@SuoNayi 
yes, either the brokerName or the lease-database-locker.leaseHolderId needs to be unique for
a master/slave pair.
And yes, lockAcquireSleepInterval > lockKeepAlivePeriod is necessary.
                
> JDBC Master/Slave : Slave cannot acquire lock when the master loose database connection.
> ----------------------------------------------------------------------------------------
>
>                 Key: AMQ-3654
>                 URL: https://issues.apache.org/jira/browse/AMQ-3654
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.5.0
>         Environment: Unix/Redhat 5.6
> ActiveMQ 5.5.0
> Oracle 10G
>            Reporter: Richard Martin
>            Assignee: Gary Tully
>            Priority: Critical
>             Fix For: 5.7.0
>
>
> Our configuration is JDBC Master/Slave with one master and one slave. When the master
is started, he acquire the database lock.
> Then when the slave is started, he wait to acquire the database lock. When the master
loose the network connection to the database, the lock in the database is not removed and
the slave connot acquire the database lock. In this situation, the master is unable to respond
to client (due to network failure)
> and the slave is not started because he can't acquire the database lock.
> When the master is killed, the slave can't acquire the database lock too. After the network
connection is restored, when the master starts, it cannot
> acquire lock to the database (because the lod lock is always present) so now, we have
two slaves and no master.
> Please, refer to this issue which is the same problem : AMQ-1958 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message