DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|NEEDINFO|RESOLVED
 Resolution||FIXED




--- Additional Comments From [EMAIL PROTECTED]  2007-01-31 20:23 ---
No response in almost a year. I am going to assume the Filip's change resolved
this issue.

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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|NEW |NEEDINFO




--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 19:14 ---
Interesting, could you post a little code snippet that causes the problem that
you see.
I will take a look and see why this is happening.

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 20:10 ---
Created an attachment (id=17763)
 --> (http://issues.apache.org/bugzilla/attachment.cgi?id=17763&action=view)
Test case with workaround

It looks like I'll be using SimpleTcpReplicationManager anyway, but I figure I
owe one to Apache after all these years. ;) Test case webapp is attached. Just
deploy and then hit sessiondata.jsp, you'll see the "foo" attribute created by
the session listener. Refresh until you hit a different tomcat in the cluster,
you'll see "foo" isn't replicated.

In web.xml, uncomment the servlet filter to see the workaround in action.
Source for the servlet listener and filter are included under WEB-INF.

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 21:00 ---
Hi Filip,

I stumbled into the same problem just two days ago :)

At least for 5.0 I vaguely remember, that the DeltaRequest is being reset after
creating the session, and any HTTPSessionListener's createSession method is
being called by non cluster code. So I did not see ny obvious fix, although it
might be possible to do reset the DeltaRequest first.

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|NEEDINFO|ASSIGNED




--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 21:18 ---
Cool, I will look into it. it could have something to do with cross context
session replication, and that might have jacked up the flow a bit.

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution||INVALID




--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 21:40 ---
hi there,
the web.xml in the clustertest.war is missing the  element that
will make it available for session replication. I added in this element, and the
test worked fine.

Please reopen this bug if you think I made a mistake

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 22:25 ---
Works for me too, out of curiosity how does that make a difference? I thought
that flag just enforced checks for Serializable on session objects?

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 22:31 ---
if that flag isn't available, the servlet container will not replicate your 
data.
otherwise, the container has no way of knowing what contexts to replicate and
what contexts not to replicate

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|RESOLVED|REOPENED
 Resolution|INVALID |




--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 22:45 ---
I take it back, was only working for me since I had already moved to
SimpleTcpReplicationManager! Ouch.

Without the flag, non-listener created data was replicating just fine? Probably
because my server.xml configures things at the Host level. I'll attach my
server.xml.

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DO NOT REPLY [Bug 38740] - (5.5.15) session attributes set in sessionCreated not synched

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-21 22:48 ---
Created an attachment (id=17765)
 --> (http://issues.apache.org/bugzilla/attachment.cgi?id=17765&action=view)
server.xml used in testign


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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|REOPENED|RESOLVED
 Resolution||INVALID




--- Additional Comments From [EMAIL PROTECTED]  2006-02-22 00:44 ---
aah, you are user mod_jk, mod_jk is only intended to work with sticky sessions,
and for fail over to work, you need to enable the route binder valve and the 

   

you will also need to set jvmRoute="node01" (and node02 on the second) on the
 element,

examples can be found at 
http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-22 03:38 ---
I don't understand why, would rather use the workaround or SimpleTcp. Sticky 
sessions are not true clustering IMHO. I reluctantly accept the 'invalid' mark 
but I'm reminded of the frustrations of working with OSS.

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-22 16:44 ---
Believe me, I feel with you. But round robin on each request is not very
efficient, nor is the SimpleTcpReplicationManager.

You will get far more juice out of the DeltaManager. 

In order to have round robin, you should add the (waitForAck="true") to your
 element, this guarantees that the session is replicated before the
response is returned to the client. 

I BELIEVE THE WAITFORACK COULD SOLVE YOUR PROBLEM FOR TRUE ROUND ROBIN 
REPLICATION.

mod_jk has never been a big favorite of mine, I always use mod_proxy, and we
pair one apache with one tomcat, we always do the load balancing before we hit
apache.

The reason the bug is invalid, is cause its a simple documentation issue. If
your replication doesn't work due to the mod_jk implementation, then this bug is
still invalid, and you should open up one against that module. I have tested
your scenario and have found nothing wrong nor have I been able to reproduce the
error under any circumstances. 

I would say you received quite good support for all the $0 dollars you spent and
not reading the manual ;)

Let us know if we can help with anything else

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-22 16:48 ---
FYI we're not using mod_jk for load balancing, we have a hardware load balancer
going between two apaches. These apaches communicate to single tomcat instances.
Does that make a difference here?

And yes, this is great for free support, apologies if I let my frustrations get
the best of me.

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-22 17:05 ---
hey Nick,
your setup should work fine. and clustering should work equally fine in your 
setup.

feel free to contact me directly if you still can't get it to work as I think
I'm going off topic from the original bug :)

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-24 15:45 ---
Attributes set by a session listener via setAttribute in sessionCreated are not
replicated via the cluster. Only the creation of the session (it's ID) is being
replicated and after the listener was called the DeltaRequest is being reset.

But: if notifySessionListenersOnReplication=true for the cluster manager - which
is the default - then the listener is called after replicating the session
creation on the remote side and will then set the Attribute there again. That's
why the attribute can be found on the remote side.

CAUTION: Replicating an attribute and setting it independently on the primary
and secondary nodes might not be the same. It depends on the type of the
attribute if that results in an application problem or not.

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-24 16:38 ---
That's a good point Rainer -- in your test config Filip, did you enable
notifySessionListenersOnReplication?

I still think this is a valid bug, but I'll leave it to you to reopen.

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--- Additional Comments From [EMAIL PROTECTED]  2006-02-24 17:23 ---
I ran the test case as you gave it to me and foo=bar got replicated just fine.
the only difference is that I added a HTTP connector as I don't use mod_jk

you can reopen it if you still are seeing the problem, I marked it invalid since
I  wasn't able to reproduce it.

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[EMAIL PROTECTED] changed:

   What|Removed |Added

 Status|RESOLVED|REOPENED
 Resolution|INVALID |




--- Additional Comments From [EMAIL PROTECTED]  2006-02-24 23:10 ---
actually, the session code looks broken. resetDeltaRequest shoult NOT be called
inside DeltaManager.createSession, and it should not be called inside
DeltaManager.sendCreateSession

resetDeltaRequest is called inside the DeltaSession constructor. That is good
enough.



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[EMAIL PROTECTED] changed:

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 Status|REOPENED|NEEDINFO




--- Additional Comments From [EMAIL PROTECTED]  2006-02-25 01:37 ---
Nick,

Filip made a change. Are you able to check with the DeltaManager from trunk?

The new version should replicate your foo attribute as set by the listener on
the primary side. Your listener will also be called by default on the remote
side (and set the attribute), but it will afterwards be overwritten by the
replicated attribute. You could check by setting the attribute "foo" to a
timestamp instead of "bar".

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