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From Feng AtWork <feng8w...@gmail.com>
Subject Re: Which Persistence Adapter to Use for Shared File System Master/Slave
Date Tue, 06 Apr 2010 20:53:59 GMT
Thanks.  Figured that out as well from the early draft of ActiveMQ in Action
book.

-Feng

On Tue, Apr 6, 2010 at 1:52 AM, Dejan Bosanac <dejan@nighttale.net> wrote:

> Hi,
>
> for shared filesystem master slave setup you should use either KahaDB (from
> 5.3.0 on) or ActiveMQ persistence adapter (on earlier versions). If you
> plan
> to have shared database master slave, that you should use JDBC persistence
> adapter (without journaling).
>
> Cheers
> --
> Dejan Bosanac - http://twitter.com/dejanb
>
> Open Source Integration - http://fusesource.com/
> ActiveMQ in Action - http://www.manning.com/snyder/
> Blog - http://www.nighttale.net
>
>
> On Mon, Apr 5, 2010 at 9:36 AM, Feng AtWork <feng8work@gmail.com> wrote:
>
> > Hi, There,
> >
> > I have been evaluating ActiveMQ for our new project for the past few
> weeks,
> > and I cannot find a conclusive answer about exactly which persistence
> > adapters can be used with a shared file system master/slave set up.
> >
> > There seems to be some conflicting information out there, for example:
> >
> > 1) according to Bruce Snyder in this thread,
> >
> >
> http://markmail.org/message/ldjoyewy3jczcaai?q=shared+file+system++list:org.apache.activemq.users
> > ,
> > it seems journaledJBDC can only be used with shared JDBC master/slave,
> >
> > but 2) the example in
> > http://activemq.apache.org/shared-file-system-master-slave.html shows to
> > use
> > just the journaledJDBC adapter with shared file system master/slave;
> >
> > and 3), according to the same thread in 1), AMQ persistence should be
> used
> > with shared file system master/slave.
> >
> > And what about  kahaPersistenceAdapter, it is file based, but the above
> > thread mentions http://activemq.apache.org/kahadb-master-slave.html,
> which
> > uses zookeeper and is not supported.
> >
> > Finally, what is the different between kahaPersistenceAdapter in
> > <kahaPersistenceAdapter dir="target/kaha-data"/> and just kaha in <kahaDB
> > directory="activemq-data" journalMaxFileLength="32mb"/>.   Are
> > kahaPersistenceAdater and kahaDB the same thing?   If
> > kahaPersistenceAdapter
> > cannot be used with shared file system JDBC, can kahaDB be used instead?
> >
> > Any clarification will be much appreciated.  We load tested journaledJDBC
> > with default derby data source and an Oracle data source, the performance
> > were not satisfactory.
> >
> > Thanks.
> >
> > -Feng
> >
>

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