James.Strachan wrote:
>
> On 3/6/07, rbector <[EMAIL PROTECTED]> wrote:
>
>> I am still trying to understand why this is hard to manage if you are
>> using
>> a database.
>> Cant all the participating applications use the same database ? What
>> exactly
>> is
>> the management overhead there ?
Would there be a separate buffer per connection ?
Otherwise a broken listener would still cause all the others to block...
Also with the current release would a slow listener cause all the other
listeners to slow down because it is not clearing messages from the buffer
fast enough ?
Thanks
Jon
In the next major version (trunk branch) we have made some major
strides in this area so that messages just go to disk on your senario
instead of being buffered in memory. But all buffers (even ones on
disks) have limits and will eventually be reached. So you have to
detect dead clients anyways
Oops that should have read:
"Yep if you kill off the JVM of the broken listener then"
On 3/7/07, rabidgremlin <[EMAIL PROTECTED]> wrote:
Hi Hiram,
Yep if you kill off the JVM of the broken publisher then things kick back
into action
Not sure this is good "expected behaviour". A misbehavi
Hi Hiram,
Yep if you kill off the JVM of the broken publisher then things kick back
into action
Not sure this is good "expected behaviour". A misbehaving listener should
not stop the publisher or other consumers from working.
I would have hoped that the connections between the broker and th
if you kill the JVM of the broken listener does the publisher
un-block? If so then this is the expected behaviour. The reason for
this is that even though the listner is logically broken, (it's not
receiving messages anymore), the broker does not know this since it
still has an active connection
Hi All,
I have a production application that receives SOAP "event" messages,
converts them into JMS messages and publishes them to a topic. I then have
multiple subscribers listening to these "events".
Under high loads (500-1000 events a minute) messages stop been published. I
continue to receiv
Here is the stack trace:
java.lang.NullPointerException
at
org.apache.activemq.network.DemandForwardingBridgeSupport.configureMessage(DemandForwardingBridgeSupport.java:465)
at
org.apache.activemq.network.DemandForwardingBridgeSupport.serviceLocalCommand(DemandForwardingBridgeSupp
Thanks for suggestion. Although the prefetch did not do anything
(noticeable) in my case. I did discover that for EJB3.0 -- which is what I
am doing, that there is a setting in the ejb3-interceptors-aop.xml which in
combination of some maxSessions, I was able to get some more MDBs being
allocate
I did not configure any log4j.properties file for active MQ . Active MQ
uses log 4j implicitly here , I think.
-Original Message-
From: James Strachan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 06, 2007 1:38 AM
To: users@activemq.apache.org
Subject: Re: active mq and log 4j exception
Thanks James,
I moved away from failover:tcp://localhost:61616 for reasons that now
completely escape me. I'll put that back in and see the problem goes
away.
cheers,
j.
On 3/5/07, James Strachan <[EMAIL PROTECTED]> wrote:
On 3/5/07, Jamie McCrindle <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I k
On 3/6/07, nicpillinger <[EMAIL PROTECTED]> wrote:
Another reason for embedding is the latency - surely if I run it standalone
the messages created within the app server have to do an extra network hop
to reach activeMQ before being distributed to the clients?
If the broker is on the same mach
On 3/6/07, nicpillinger <[EMAIL PROTECTED]> wrote:
Thanks,
I really want to wire up MDBs as well. Is it possible to have MDBs running
in the App Server subscribed to the same topic as external activeMQ clients?
Sure!
ActiveMQ can communicate with many different languages, platforms and
protoc
Another reason for embedding is the latency - surely if I run it standalone
the messages created within the app server have to do an extra network hop
to reach activeMQ before being distributed to the clients?
James.Strachan wrote:
>
> BTW you don't have to run the broker inside any app server
Thanks,
I really want to wire up MDBs as well. Is it possible to have MDBs running
in the App Server subscribed to the same topic as external activeMQ clients?
James.Strachan wrote:
>
> BTW other options are...
>
> Deploy the Web Console with an embedded broker (i.e. just deploy the
> WAR whi
On 3/6/07, davem <[EMAIL PROTECTED]> wrote:
Hello,
Should a QueueBrowser work against a queue in a broker that is part of a
network of brokers in 4.1.0?
Sure.
If I have two brokers in a network (each with
a static network connector to the other) and I browse a queue on one of the
two, then
Hello,
Should a QueueBrowser work against a queue in a broker that is part of a
network of brokers in 4.1.0? If I have two brokers in a network (each with
a static network connector to the other) and I browse a queue on one of the
two, then an INFO message is logged on the other broker that the
On 3/6/07, Matías Cobiella <[EMAIL PROTECTED]> wrote:
Let me see. I'll try to find the correct syntax.
Could you tell me which SQL statement currently are using AMQ for DB2 to get
the exclusive lock?
By turning on debug logging you should see it - but FWIW the current SQL is
SELECT * FROM ACT
Let me see. I'll try to find the correct syntax.
Could you tell me which SQL statement currently are using AMQ for DB2 to get
the exclusive lock?
James.Strachan wrote:
>
> This looks like a DB2 issue; the SQL we execute to get an exclusive
> lock on the database does not appear to work proper
My min and max size parms are set to 100 for this. As in:
message-driven-bean
default
org.jboss.ejb.plugins.jms.JMSContainerInvoker
DefaultJMSProvider
StdJMSPool
true
100
100
But I also wonder if this even applies to M
In my application i was using Master-Slave configuration with JounaledJDBC
persistence with MySQL as secondary storage. Under high load when I shutdown
MasterBroker, the Slave Broker takes a Long time to Startup because of time
spent in recovering messages from journal files. I would like to know
BTW other options are...
Deploy the Web Console with an embedded broker (i.e. just deploy the
WAR which by default has an embedded broker)
http://activemq.apache.org/web-console.html
Use the BrokerXmlConfig property on the RAR to force the RAR to
include an embedded broker
http://cwiki.apache.o
BTW you don't have to run the broker inside any app server (it doesn't
really add much value). Why not just run the broker stand alone?
The RAR is only really necessary for wiring MDBs to ActiveMQ.
On 3/6/07, nicpillinger <[EMAIL PROTECTED]> wrote:
I've deployed the RAR file by dropping in th
I've deployed the RAR file by dropping in the autodeploy directory. What
next? I cant find any info what I need to do to confgure ActiveMQ as an
embedded broker or how connect to ActiveMQ when it's embedded in Sun App
Server. Can I still create JMS resources through the Sun App Server admin
tool?
How is JBoss configured?
did you set the MaximumSize parameters accordingly?
As shown here:
http://wiki.jboss.org/wiki/Wiki.jsp?page=ConfigJBossMDB
Cheers
Francesco
kchamber wrote:
>
> I have ActiveMQ integrated in with JBoss according to the instructions
> listed on this website, and I am lo
FWIW there's no real need using a separate thread to create a consumer
in it if you are using the MessageListener (async) approach. You only
need to create separate threads if you are using the sync approach
(consumer.receive*() stuff).
Subscribing to messages lasts forever; so there is no explic
On 3/5/07, John Toohey <[EMAIL PROTECTED]> wrote:
Hi,
My app is using a single-resource transaction to process messages
from a persistent queue. I read the messages in a transaction,
process the data, and commit the transaction on success. If my
business logic fails, I roll-back the transaction.
On 3/5/07, kchamber <[EMAIL PROTECTED]> wrote:
I have ActiveMQ integrated in with JBoss according to the instructions listed
on this website, and I am looking at how to maximize the throughput for the
MDBs listening on a single non-persistent queue.
Specifically, I can have several hundred mess
On 3/6/07, Jim Alateras <[EMAIL PROTECTED]> wrote:
James,
Thanks for the quick response. Does that also negotiate NAT and firewalls.
Its using pure HTTP so it will work over firewalls so long as the
broker is visible on the internet (so it doesn't do any NAT magic).
--
James
---
http://r
This looks like a DB2 issue; the SQL we execute to get an exclusive
lock on the database does not appear to work propertly - we'll
probably have to tweak it for DB2. Fancy helping to figure out the
correct DB2 syntax to get an exclusive lock?
On 3/5/07, Matías Cobiella <[EMAIL PROTECTED]> wrote:
James,
Thanks for the quick response. Does that also negotiate NAT and firewalls.
cheers
James Strachan wrote:
On 3/6/07, Jim Alateras <[EMAIL PROTECTED]> wrote:
I am wondering whether activemq supports http tunneling using a
persistent pub-sub model. I want to use pub-sub to aggregate data f
What does your log4j.properties file look like?
On 3/6/07, Suchitha Koneru (sukoneru) <[EMAIL PROTECTED]> wrote:
Hello active MQ users ,
I have an embedded broker running as a servlet
listener in Tomcat 5.5.20. I am using active mq 4.0 version .
The Java version is 1.5
I g
On 3/6/07, rbector <[EMAIL PROTECTED]> wrote:
Hello James
Thanks for your response. Please see below:
> 1) We'd prefer to use the embedded version of the broker. All
> communicating
> applications would use the embedded broker so there would be no *server*
> running. I've read that this Topo
The HTTP/HTTPS transport was missing from the site, I've just added a page...
http://cwiki.apache.org/ACTIVEMQ/http-and-https-transports-reference.html
On 3/6/07, James Strachan <[EMAIL PROTECTED]> wrote:
On 3/6/07, Jim Alateras <[EMAIL PROTECTED]> wrote:
> I am wondering whether activemq suppo
On 3/6/07, Jim Alateras <[EMAIL PROTECTED]> wrote:
I am wondering whether activemq supports http tunneling using a
persistent pub-sub model. I want to use pub-sub to aggregate data from
distributed sites across the internet.
Yes. There's a HTTP transport that ActiveMQ can communicate over; so
y
I am wondering whether activemq supports http tunneling using a
persistent pub-sub model. I want to use pub-sub to aggregate data from
distributed sites across the internet.
cheers
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