Re: WAS: tomcat 5.0.16 Replication
Ok here is what is going on. Seams like the problem is not with the tomcat replication but with the damned JK balancer. :( When the 2nd tomcat node is shutdown, the balancer resend all the request pending to the other node. (BUT, without the parameter.) I sent 50 request to each node (or so) when I did shutdown the 2nd node, the first node received 50 request without a couple of ms. All of them with NULL parameters (without the value of the original form post) God this ain't good. hopefully in production we are using a Cisco load balancer. Hope it doesn't do that too. Any idea of what is wrong with the balancer worker? Any other way to work random balancing with tc/apache? Thanks a lot Jean-Philippe Bélanger CGI Filip Hanik wrote: if you have a test case for me I can take a look and see what happens Filip - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: WAS: tomcat 5.0.16 Replication
I just either http://siag.nu/pen/ (my favorite, works on both windows and unix) or balance http://balance.sourceforge.net on unix only Filip -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 14, 2004 6:09 AM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication Ok here is what is going on. Seams like the problem is not with the tomcat replication but with the damned JK balancer. :( When the 2nd tomcat node is shutdown, the balancer resend all the request pending to the other node. (BUT, without the parameter.) I sent 50 request to each node (or so) when I did shutdown the 2nd node, the first node received 50 request without a couple of ms. All of them with NULL parameters (without the value of the original form post) God this ain't good. hopefully in production we are using a Cisco load balancer. Hope it doesn't do that too. Any idea of what is wrong with the balancer worker? Any other way to work random balancing with tc/apache? Thanks a lot Jean-Philippe Bélanger CGI Filip Hanik wrote: if you have a test case for me I can take a look and see what happens Filip - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
Already ahead of you on this one! :) Pen is great indeed. I kinda love the load-balancing AND failover feature that balance.sourceforge doesn`t have. Jean-Philippe Bélanger CGI Filip Hanik wrote: I just either http://siag.nu/pen/ (my favorite, works on both windows and unix) or balance http://balance.sourceforge.net on unix only Filip -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 14, 2004 6:09 AM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication Ok here is what is going on. Seams like the problem is not with the tomcat replication but with the damned JK balancer. :( When the 2nd tomcat node is shutdown, the balancer resend all the request pending to the other node. (BUT, without the parameter.) I sent 50 request to each node (or so) when I did shutdown the 2nd node, the first node received 50 request without a couple of ms. All of them with NULL parameters (without the value of the original form post) God this ain't good. hopefully in production we are using a Cisco load balancer. Hope it doesn't do that too. Any idea of what is wrong with the balancer worker? Any other way to work random balancing with tc/apache? Thanks a lot Jean-Philippe Bélanger CGI Filip Hanik wrote: if you have a test case for me I can take a look and see what happens Filip - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
Still checking to make sure it ain't on my side (MVC or such)
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
interesting, never seen that, let me take a look. I have an automated test
that I run to check replication integrity.
since you get this everytime, it shouldn't be a problem for me to do
reproduce this.
do you by any chance have the test program you have and would email it to
me?
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:56 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
I understand that. Here more info...
I make a servlet request that does this:
while ( i 25 ) {
if ( request.getParameters(xxx) == null ) {
System.out.println(param is null);
}
Thread.currentThread().sleep(1000);
i++
}
I then send a couple of request with param xxx=123 at 1 secs interval.
(those request are all made to the same server ie: web1)
Once a couple of them are sent I shutdown web2.
As soon as the INFO: Received member
disappeared:org.apache.catalina.cluster.mcast.McastMember[tcp://10.1
28.29.66:4001,10.128.29.66,4001,
alive=6576] message is received my log gets flooded with param is null
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
the way the login is done, is that a request is being saved in the session
(in a session note, and that is not replicated).
So for a login, you must hit the same server twice in a row. Otherwise you
will see NULL in your request parameters. Also in this release, the
principal is not being replicated, I am working on that right now
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:29 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
Been working on testing the new modules and came across something weird.
Wondering if you got any idea on the cause/problem while I continue
investigating
Scenario:
- one web page login in a user. receive 3 parameters (user, password and
community)
- To be able to replicate the problem I had to put a sleep on 25 secs in
code.
- Post one request each second or so and after a couple of them, shudown
one tomcat and restart it. (stop/start sequence)
- A couple of request will start pourring the result, but after some..
when tomcat that got shutdown is restarting, the request parameters
becomes NULL.
As if the replication code was killing my request objects or resetting
my parameters on those requests. Any thought on what it could be?
I even had session mix-up once. when restarting a tomcat a user was
logging in and was assigned a session from another user that never
logged on from his station (that session was idle for more than 10 hours
too).
Just trying to pinpoint where the problem could be. Any pointer would help.
Thanks
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
Steve and Jean-Philippe,
I've been working on some more replication stuff and made a major change
that I think you might want to use.
I have added a third configuration to the parameter replicationMode,
replicationMode=pooled
With this setting it still is synchronized replication, but uses a pool of
sockets to replicate the data.
It improves performance a lot. Try it out, and let me know how it
works for
you
You will notice the improvement under load.
of course, get latest from cvs first
Filip
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 12:05 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll
have to do that when I get back to the servers.
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 2:04 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
uname -a
machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST
2003 i686
i686 i386 GNU/Linux
machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003
i686 i686 i386 GNU/Linux
java -version:
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
same on both
-Original Message-
From: Filip Hanik [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 1:56 PM
To: Tomcat Users List
Subject: RE: tomcat 5.0.16 Replication
[EMAIL PROTECTED] bin]# uname -a
Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386
GNU/Linux
[EMAIL PROTECTED] bin]# java -version
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 11:05 AM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
sun JDK 1.4.2 for Linux
Kernel 2.4.20-8smp
Tomcat 5.0.16 with catalina-cluster.jar
Re: WAS: tomcat 5.0.16 Replication
This is the kind of behaviour that I really cannot understand. Makes archiving a pain and is totally inconsiderate. At 8:23 am -0500 2004/01/13, [EMAIL PROTECTED] wrote: Still checking to make sure it ain't on my side (MVC or such) Jean-Philippe Bélanger CGI [25kB of inessential quote] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
And your reply is better? I'm trying to get that replication thing working with Filip. If there is something imcompatible with his code that make this behavior happens. I will try and find it before giving him the job. He's not the only one that has to work with this. I'm offering my help. I'm not gonna waste more time with you since you don't help us in any with our problem. Jean-Philippe Bélanger CGI Giuliano Gavazzi wrote: This is the kind of behaviour that I really cannot understand. Makes archiving a pain and is totally inconsiderate. At 8:23 am -0500 2004/01/13, [EMAIL PROTECTED] wrote: Still checking to make sure it ain't on my side (MVC or such) Jean-Philippe Bélanger CGI [25kB of inessential quote] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: WAS: tomcat 5.0.16 Replication
He didn't critique that you posted, just how. He doesn't like posts with quotes that are not needed. (That's the attitude of many in the list (me too)) Please try to strip of the quotes that are not relevant for your answer. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 13, 2004 3:42 PM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication And your reply is better? I'm trying to get that replication thing working with Filip. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
Well then... Sorry about misunderstanding. I'll try to remove my thousand of quotes now! :P and keep only the last one Jean-Philippe Bélanger CGI Ralph Einfeldt wrote: He didn't critique that you posted, just how. He doesn't like posts with quotes that are not needed. (That's the attitude of many in the list (me too)) Please try to strip of the quotes that are not relevant for your answer. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
I've tried to replicate the problem with a simple servlet. outside of
our MVC architecture (controller). and seams like I can't.
I've put traces in our controller on the doPost method writing the
request parameter to the console.
When the 2nd node is shutdown, they request params become nulls! even if
the same Post is done from a local static webpage.
I've been trying to find out why for hours. but seams like I'm getting a
dead-end soon.
any ideas where I could look? fresh ideas would help! :)
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
interesting, never seen that, let me take a look. I have an automated test
that I run to check replication integrity.
since you get this everytime, it shouldn't be a problem for me to do
reproduce this.
do you by any chance have the test program you have and would email it to
me?
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:56 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
I understand that. Here more info...
I make a servlet request that does this:
while ( i 25 ) {
if ( request.getParameters(xxx) == null ) {
System.out.println(param is null);
}
Thread.currentThread().sleep(1000);
i++
}
I then send a couple of request with param xxx=123 at 1 secs interval.
(those request are all made to the same server ie: web1)
Once a couple of them are sent I shutdown web2.
As soon as the INFO: Received member
disappeared:org.apache.catalina.cluster.mcast.McastMember[tcp://10.1
28.29.66:4001,10.128.29.66,4001,
alive=6576] message is received my log gets flooded with param is null
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
the way the login is done, is that a request is being saved in the session
(in a session note, and that is not replicated).
So for a login, you must hit the same server twice in a row. Otherwise you
will see NULL in your request parameters. Also in this release, the
principal is not being replicated, I am working on that right now
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:29 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
Been working on testing the new modules and came across something weird.
Wondering if you got any idea on the cause/problem while I continue
investigating
Scenario:
- one web page login in a user. receive 3 parameters (user, password and
community)
- To be able to replicate the problem I had to put a sleep on 25 secs in
code.
- Post one request each second or so and after a couple of them, shudown
one tomcat and restart it. (stop/start sequence)
- A couple of request will start pourring the result, but after some..
when tomcat that got shutdown is restarting, the request parameters
becomes NULL.
As if the replication code was killing my request objects or resetting
my parameters on those requests. Any thought on what it could be?
I even had session mix-up once. when restarting a tomcat a user was
logging in and was assigned a session from another user that never
logged on from his station (that session was idle for more than 10 hours
too).
Just trying to pinpoint where the problem could be. Any pointer would help.
Thanks
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
Steve and Jean-Philippe,
I've been working on some more replication stuff and made a major change
that I think you might want to use.
I have added a third configuration to the parameter replicationMode,
replicationMode=pooled
With this setting it still is synchronized replication, but uses a pool of
sockets to replicate the data.
It improves performance a lot. Try it out, and let me know how it
works for
you
You will notice the improvement under load.
of course, get latest from cvs first
Filip
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 12:05 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll
have to do that when I get back to the servers.
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 2:04 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
uname -a
machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST
2003 i686
i686 i386 GNU/Linux
machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003
i686 i686 i386 GNU/Linux
java -version:
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
same on both
-Original Message-
From: Filip Hanik [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 1:56 PM
To: Tomcat Users List
Subject: RE: tomcat 5.0.16 Replication
[EMAIL PROTECTED] bin]# uname -a
Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386
GNU/Linux
[EMAIL
Re: WAS: tomcat 5.0.16 Replication
hmm, could it be that your Request gets invalidated, the Request you are holding on to is just a fascade. On top of my head, I can't see a connection with the cluster. Does your logs indicate anything else, like a null pointer etc? Filip - Original Message - From: [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Tuesday, January 13, 2004 9:24 AM Subject: Re: WAS: tomcat 5.0.16 Replication I've tried to replicate the problem with a simple servlet. outside of our MVC architecture (controller). and seams like I can't. I've put traces in our controller on the doPost method writing the request parameter to the console. When the 2nd node is shutdown, they request params become nulls! even if the same Post is done from a local static webpage. I've been trying to find out why for hours. but seams like I'm getting a dead-end soon. any ideas where I could look? fresh ideas would help! :) Jean-Philippe Bélanger CGI Filip Hanik wrote: interesting, never seen that, let me take a look. I have an automated test that I run to check replication integrity. since you get this everytime, it shouldn't be a problem for me to do reproduce this. do you by any chance have the test program you have and would email it to me? Filip - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
That's the catch. Everything is A ok. no error what soever before I get a null params. Would an invalidated request still had the getRemoteAddr() and getRequestURI() set? And if so... how can I know if a REQUEST gets invalidated?? Jean-Philippe Bélanger CGI Filip Hanik wrote: hmm, could it be that your Request gets invalidated, the Request you are holding on to is just a fascade. On top of my head, I can't see a connection with the cluster. Does your logs indicate anything else, like a null pointer etc? Filip - Original Message - From: [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Tuesday, January 13, 2004 9:24 AM Subject: Re: WAS: tomcat 5.0.16 Replication I've tried to replicate the problem with a simple servlet. outside of our MVC architecture (controller). and seams like I can't. I've put traces in our controller on the doPost method writing the request parameter to the console. When the 2nd node is shutdown, they request params become nulls! even if the same Post is done from a local static webpage. I've been trying to find out why for hours. but seams like I'm getting a dead-end soon. any ideas where I could look? fresh ideas would help! :) Jean-Philippe Bélanger CGI Filip Hanik wrote: interesting, never seen that, let me take a look. I have an automated test that I run to check replication integrity. since you get this everytime, it shouldn't be a problem for me to do reproduce this. do you by any chance have the test program you have and would email it to me? Filip - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: WAS: tomcat 5.0.16 Replication
if you have a test case for me I can take a look and see what happens Filip -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 13, 2004 11:12 AM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication That's the catch. Everything is A ok. no error what soever before I get a null params. Would an invalidated request still had the getRemoteAddr() and getRequestURI() set? And if so... how can I know if a REQUEST gets invalidated?? Jean-Philippe Bélanger CGI Filip Hanik wrote: hmm, could it be that your Request gets invalidated, the Request you are holding on to is just a fascade. On top of my head, I can't see a connection with the cluster. Does your logs indicate anything else, like a null pointer etc? Filip - Original Message - From: [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Tuesday, January 13, 2004 9:24 AM Subject: Re: WAS: tomcat 5.0.16 Replication I've tried to replicate the problem with a simple servlet. outside of our MVC architecture (controller). and seams like I can't. I've put traces in our controller on the doPost method writing the request parameter to the console. When the 2nd node is shutdown, they request params become nulls! even if the same Post is done from a local static webpage. I've been trying to find out why for hours. but seams like I'm getting a dead-end soon. any ideas where I could look? fresh ideas would help! :) Jean-Philippe Bélanger CGI Filip Hanik wrote: interesting, never seen that, let me take a look. I have an automated test that I run to check replication integrity. since you get this everytime, it shouldn't be a problem for me to do reproduce this. do you by any chance have the test program you have and would email it to me? Filip - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: WAS: tomcat 5.0.16 Replication
That sounds good. I'll get the CVS head and check this out. We won't really put much stress on those server for a while, but as long as the behavior is the same. I buy! :) btw: is there a pool config or is it hardcoded for now? Thanks again Filip. Jean-Philippe Belanger Filip Hanik wrote: Steve and Jean-Philippe, I've been working on some more replication stuff and made a major change that I think you might want to use. I have added a third configuration to the parameter replicationMode, replicationMode=pooled With this setting it still is synchronized replication, but uses a pool of sockets to replicate the data. It improves performance a lot. Try it out, and let me know how it works for you You will notice the improvement under load. of course, get latest from cvs first Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:05 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll have to do that when I get back to the servers. -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:04 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication uname -a machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux java -version: java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) same on both -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:56 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication [EMAIL PROTECTED] bin]# uname -a Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]# java -version java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 11:05 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication sun JDK 1.4.2 for Linux Kernel 2.4.20-8smp Tomcat 5.0.16 with catalina-cluster.jar from CVS head Hrmmmare yours SMP servers? Could be something odd with synch if that is the case. -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:01 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL what VM (version and name) are you using? Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 10:59 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Now that's really very strange. I am running RH9 and everything seems to go through just fine. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:56 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication The replication message ACK never get back to the sender. So my webpages never loads without that flag. I think it is only needed under REDHAT 9. Jean-Philippe Bélanger Steve Nelson wrote: I don't seem to need the ld_assume_kernel thing. What are the symptoms when it is required? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:33 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication Just tried the CVS head and everything works with any CPU going crazy! only if ld_assume_kernel is set to 2.4 One more question for you Filip, is the useDirtyFlag working at all? It seams like even if it's set to true, the whole session gets replicated after each request. :( Jean-Philippe [EMAIL PROTECTED] wrote: Hurray for Fillip! :) I'll get the CVS head for the module today and test this out. Happy to see that it got fixed that quickly! Thanks again and I'll let you know how it goes Jean-Philippe Filip Hanik wrote: Jean-Philippe and Steve, I fixed the bug, and tried replication on RH9. Immediately it didn't work. The problem is that when RH9 tries to write the ACK back to the NIO socket, it never reaches the other node. and times out after a long time. I set LD_ASSUME_KERNEL=2.4 and it started to work Filip -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Thursday, January 08, 2004 6:43 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication ok guys, good news. The 100% cpu is totally my fault. I messed up on that one. I was registering OP_WRITE as an interest this is not good :) checking in the working code in 15 min, some more regression tests Filip -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED
Re: WAS: tomcat 5.0.16 Replication
BTW you can get the nightly build here: http://cvs.apache.org/builds/jakarta-tomcat-5/nightly/ Instead of building tomcat from scratch :-) -- Jeanfrancois [EMAIL PROTECTED] wrote: That sounds good. I'll get the CVS head and check this out. We won't really put much stress on those server for a while, but as long as the behavior is the same. I buy! :) btw: is there a pool config or is it hardcoded for now? Thanks again Filip. Jean-Philippe Belanger Filip Hanik wrote: Steve and Jean-Philippe, I've been working on some more replication stuff and made a major change that I think you might want to use. I have added a third configuration to the parameter replicationMode, replicationMode=pooled With this setting it still is synchronized replication, but uses a pool of sockets to replicate the data. It improves performance a lot. Try it out, and let me know how it works for you You will notice the improvement under load. of course, get latest from cvs first Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:05 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll have to do that when I get back to the servers. -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:04 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication uname -a machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux java -version: java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) same on both -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:56 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication [EMAIL PROTECTED] bin]# uname -a Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]# java -version java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 11:05 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication sun JDK 1.4.2 for Linux Kernel 2.4.20-8smp Tomcat 5.0.16 with catalina-cluster.jar from CVS head Hrmmmare yours SMP servers? Could be something odd with synch if that is the case. -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:01 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL what VM (version and name) are you using? Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 10:59 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Now that's really very strange. I am running RH9 and everything seems to go through just fine. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:56 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication The replication message ACK never get back to the sender. So my webpages never loads without that flag. I think it is only needed under REDHAT 9. Jean-Philippe Bélanger Steve Nelson wrote: I don't seem to need the ld_assume_kernel thing. What are the symptoms when it is required? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:33 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication Just tried the CVS head and everything works with any CPU going crazy! only if ld_assume_kernel is set to 2.4 One more question for you Filip, is the useDirtyFlag working at all? It seams like even if it's set to true, the whole session gets replicated after each request. :( Jean-Philippe [EMAIL PROTECTED] wrote: Hurray for Fillip! :) I'll get the CVS head for the module today and test this out. Happy to see that it got fixed that quickly! Thanks again and I'll let you know how it goes Jean-Philippe Filip Hanik wrote: Jean-Philippe and Steve, I fixed the bug, and tried replication on RH9. Immediately it didn't work. The problem is that when RH9 tries to write the ACK back to the NIO socket, it never reaches the other node. and times out after a long time. I set LD_ASSUME_KERNEL=2.4 and it started to work Filip -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Thursday, January 08, 2004 6:43 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication ok guys, good news. The 100% cpu is totally my fault. I messed up on that one. I
Re: WAS: tomcat 5.0.16 Replication
Been working on testing the new modules and came across something weird. Wondering if you got any idea on the cause/problem while I continue investigating Scenario: - one web page login in a user. receive 3 parameters (user, password and community) - To be able to replicate the problem I had to put a sleep on 25 secs in code. - Post one request each second or so and after a couple of them, shudown one tomcat and restart it. (stop/start sequence) - A couple of request will start pourring the result, but after some.. when tomcat that got shutdown is restarting, the request parameters becomes NULL. As if the replication code was killing my request objects or resetting my parameters on those requests. Any thought on what it could be? I even had session mix-up once. when restarting a tomcat a user was logging in and was assigned a session from another user that never logged on from his station (that session was idle for more than 10 hours too). Just trying to pinpoint where the problem could be. Any pointer would help. Thanks Jean-Philippe Bélanger CGI Filip Hanik wrote: Steve and Jean-Philippe, I've been working on some more replication stuff and made a major change that I think you might want to use. I have added a third configuration to the parameter replicationMode, replicationMode=pooled With this setting it still is synchronized replication, but uses a pool of sockets to replicate the data. It improves performance a lot. Try it out, and let me know how it works for you You will notice the improvement under load. of course, get latest from cvs first Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:05 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll have to do that when I get back to the servers. -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:04 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication uname -a machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux java -version: java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) same on both -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:56 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication [EMAIL PROTECTED] bin]# uname -a Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]# java -version java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 11:05 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication sun JDK 1.4.2 for Linux Kernel 2.4.20-8smp Tomcat 5.0.16 with catalina-cluster.jar from CVS head Hrmmmare yours SMP servers? Could be something odd with synch if that is the case. -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:01 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL what VM (version and name) are you using? Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 10:59 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Now that's really very strange. I am running RH9 and everything seems to go through just fine. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:56 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication The replication message ACK never get back to the sender. So my webpages never loads without that flag. I think it is only needed under REDHAT 9. Jean-Philippe Bélanger Steve Nelson wrote: I don't seem to need the ld_assume_kernel thing. What are the symptoms when it is required? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:33 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication Just tried the CVS head and everything works with any CPU going crazy! only if ld_assume_kernel is set to 2.4 One more question for you Filip, is the useDirtyFlag working at all? It seams like even if it's set to true, the whole session gets replicated after each request. :( Jean-Philippe [EMAIL PROTECTED] wrote: Hurray for Fillip! :) I'll get the CVS head for the module today and test this out. Happy to see that it got fixed that quickly! Thanks again and I'll let you know how it goes
RE: WAS: tomcat 5.0.16 Replication
I had an instance where an ACK message timed out after 15ms and it had to retry. The two machines have a 100mb crossover connection so this (in theory) shouldn't happen. -Steve -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, January 12, 2004 1:29 PM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication Been working on testing the new modules and came across something weird. Wondering if you got any idea on the cause/problem while I continue investigating Scenario: - one web page login in a user. receive 3 parameters (user, password and community) - To be able to replicate the problem I had to put a sleep on 25 secs in code. - Post one request each second or so and after a couple of them, shudown one tomcat and restart it. (stop/start sequence) - A couple of request will start pourring the result, but after some.. when tomcat that got shutdown is restarting, the request parameters becomes NULL. As if the replication code was killing my request objects or resetting my parameters on those requests. Any thought on what it could be? I even had session mix-up once. when restarting a tomcat a user was logging in and was assigned a session from another user that never logged on from his station (that session was idle for more than 10 hours too). Just trying to pinpoint where the problem could be. Any pointer would help. Thanks Jean-Philippe Bélanger CGI Filip Hanik wrote: Steve and Jean-Philippe, I've been working on some more replication stuff and made a major change that I think you might want to use. I have added a third configuration to the parameter replicationMode, replicationMode=pooled With this setting it still is synchronized replication, but uses a pool of sockets to replicate the data. It improves performance a lot. Try it out, and let me know how it works for you You will notice the improvement under load. of course, get latest from cvs first Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:05 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll have to do that when I get back to the servers. -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:04 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication uname -a machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux java -version: java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) same on both -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:56 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication [EMAIL PROTECTED] bin]# uname -a Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]# java -version java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 11:05 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication sun JDK 1.4.2 for Linux Kernel 2.4.20-8smp Tomcat 5.0.16 with catalina-cluster.jar from CVS head Hrmmmare yours SMP servers? Could be something odd with synch if that is the case. -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:01 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL what VM (version and name) are you using? Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 10:59 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Now that's really very strange. I am running RH9 and everything seems to go through just fine. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:56 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication The replication message ACK never get back to the sender. So my webpages never loads without that flag. I think it is only needed under REDHAT 9. Jean-Philippe Bélanger Steve Nelson wrote: I don't seem to need the ld_assume_kernel thing. What are the symptoms when it is required? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:33 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication Just tried the CVS head and everything works with any CPU going crazy! only
RE: WAS: tomcat 5.0.16 Replication
the way the login is done, is that a request is being saved in the session (in a session note, and that is not replicated). So for a login, you must hit the same server twice in a row. Otherwise you will see NULL in your request parameters. Also in this release, the principal is not being replicated, I am working on that right now Filip -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, January 12, 2004 11:29 AM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication Been working on testing the new modules and came across something weird. Wondering if you got any idea on the cause/problem while I continue investigating Scenario: - one web page login in a user. receive 3 parameters (user, password and community) - To be able to replicate the problem I had to put a sleep on 25 secs in code. - Post one request each second or so and after a couple of them, shudown one tomcat and restart it. (stop/start sequence) - A couple of request will start pourring the result, but after some.. when tomcat that got shutdown is restarting, the request parameters becomes NULL. As if the replication code was killing my request objects or resetting my parameters on those requests. Any thought on what it could be? I even had session mix-up once. when restarting a tomcat a user was logging in and was assigned a session from another user that never logged on from his station (that session was idle for more than 10 hours too). Just trying to pinpoint where the problem could be. Any pointer would help. Thanks Jean-Philippe Bélanger CGI Filip Hanik wrote: Steve and Jean-Philippe, I've been working on some more replication stuff and made a major change that I think you might want to use. I have added a third configuration to the parameter replicationMode, replicationMode=pooled With this setting it still is synchronized replication, but uses a pool of sockets to replicate the data. It improves performance a lot. Try it out, and let me know how it works for you You will notice the improvement under load. of course, get latest from cvs first Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:05 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll have to do that when I get back to the servers. -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:04 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication uname -a machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux java -version: java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) same on both -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:56 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication [EMAIL PROTECTED] bin]# uname -a Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]# java -version java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 11:05 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication sun JDK 1.4.2 for Linux Kernel 2.4.20-8smp Tomcat 5.0.16 with catalina-cluster.jar from CVS head Hrmmmare yours SMP servers? Could be something odd with synch if that is the case. -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:01 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL what VM (version and name) are you using? Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 10:59 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Now that's really very strange. I am running RH9 and everything seems to go through just fine. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:56 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication The replication message ACK never get back to the sender. So my webpages never loads without that flag. I think it is only needed under REDHAT 9. Jean-Philippe Bélanger Steve Nelson wrote: I don't seem to need the ld_assume_kernel thing. What are the symptoms when it is required? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:33 PM To: Tomcat
RE: WAS: tomcat 5.0.16 Replication
can you check the logs, if there is an uncaught exception, the ACK will never get sent Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Monday, January 12, 2004 11:39 AM To: 'Tomcat Users List' Subject: RE: WAS: tomcat 5.0.16 Replication I had an instance where an ACK message timed out after 15ms and it had to retry. The two machines have a 100mb crossover connection so this (in theory) shouldn't happen. -Steve -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, January 12, 2004 1:29 PM To: Tomcat Users List Subject: Re: WAS: tomcat 5.0.16 Replication Been working on testing the new modules and came across something weird. Wondering if you got any idea on the cause/problem while I continue investigating Scenario: - one web page login in a user. receive 3 parameters (user, password and community) - To be able to replicate the problem I had to put a sleep on 25 secs in code. - Post one request each second or so and after a couple of them, shudown one tomcat and restart it. (stop/start sequence) - A couple of request will start pourring the result, but after some.. when tomcat that got shutdown is restarting, the request parameters becomes NULL. As if the replication code was killing my request objects or resetting my parameters on those requests. Any thought on what it could be? I even had session mix-up once. when restarting a tomcat a user was logging in and was assigned a session from another user that never logged on from his station (that session was idle for more than 10 hours too). Just trying to pinpoint where the problem could be. Any pointer would help. Thanks Jean-Philippe Bélanger CGI Filip Hanik wrote: Steve and Jean-Philippe, I've been working on some more replication stuff and made a major change that I think you might want to use. I have added a third configuration to the parameter replicationMode, replicationMode=pooled With this setting it still is synchronized replication, but uses a pool of sockets to replicate the data. It improves performance a lot. Try it out, and let me know how it works for you You will notice the improvement under load. of course, get latest from cvs first Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:05 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll have to do that when I get back to the servers. -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:04 PM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication uname -a machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux java -version: java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) same on both -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:56 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication [EMAIL PROTECTED] bin]# uname -a Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]# java -version java version 1.4.2_03 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02) Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 11:05 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication sun JDK 1.4.2 for Linux Kernel 2.4.20-8smp Tomcat 5.0.16 with catalina-cluster.jar from CVS head Hrmmmare yours SMP servers? Could be something odd with synch if that is the case. -Original Message- From: Filip Hanik [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 1:01 PM To: Tomcat Users List Subject: RE: tomcat 5.0.16 Replication interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL what VM (version and name) are you using? Filip -Original Message- From: Steve Nelson [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 10:59 AM To: 'Tomcat Users List' Subject: RE: tomcat 5.0.16 Replication Now that's really very strange. I am running RH9 and everything seems to go through just fine. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 12:56 PM To: Tomcat Users List Subject: Re: tomcat 5.0.16 Replication The replication message ACK never get back to the sender. So my webpages never loads without that flag. I think it is only needed under REDHAT 9. Jean-Philippe Bélanger Steve Nelson wrote: I don't seem to need the ld_assume_kernel thing. What are the symptoms when it is required
Re: WAS: tomcat 5.0.16 Replication
I understand that. Here more info...
I make a servlet request that does this:
while ( i 25 ) {
if ( request.getParameters(xxx) == null ) {
System.out.println(param is null);
}
Thread.currentThread().sleep(1000);
i++
}
I then send a couple of request with param xxx=123 at 1 secs interval.
(those request are all made to the same server ie: web1)
Once a couple of them are sent I shutdown web2.
As soon as the INFO: Received member
disappeared:org.apache.catalina.cluster.mcast.McastMember[tcp://10.128.29.66:4001,10.128.29.66,4001,
alive=6576] message is received my log gets flooded with param is null
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
the way the login is done, is that a request is being saved in the session
(in a session note, and that is not replicated).
So for a login, you must hit the same server twice in a row. Otherwise you
will see NULL in your request parameters. Also in this release, the
principal is not being replicated, I am working on that right now
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:29 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
Been working on testing the new modules and came across something weird.
Wondering if you got any idea on the cause/problem while I continue
investigating
Scenario:
- one web page login in a user. receive 3 parameters (user, password and
community)
- To be able to replicate the problem I had to put a sleep on 25 secs in
code.
- Post one request each second or so and after a couple of them, shudown
one tomcat and restart it. (stop/start sequence)
- A couple of request will start pourring the result, but after some..
when tomcat that got shutdown is restarting, the request parameters
becomes NULL.
As if the replication code was killing my request objects or resetting
my parameters on those requests. Any thought on what it could be?
I even had session mix-up once. when restarting a tomcat a user was
logging in and was assigned a session from another user that never
logged on from his station (that session was idle for more than 10 hours
too).
Just trying to pinpoint where the problem could be. Any pointer would help.
Thanks
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
Steve and Jean-Philippe,
I've been working on some more replication stuff and made a major change
that I think you might want to use.
I have added a third configuration to the parameter replicationMode,
replicationMode=pooled
With this setting it still is synchronized replication, but uses a pool of
sockets to replicate the data.
It improves performance a lot. Try it out, and let me know how it works for
you
You will notice the improvement under load.
of course, get latest from cvs first
Filip
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 12:05 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll
have to do that when I get back to the servers.
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 2:04 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
uname -a
machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST
2003 i686
i686 i386 GNU/Linux
machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003
i686 i686 i386 GNU/Linux
java -version:
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
same on both
-Original Message-
From: Filip Hanik [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 1:56 PM
To: Tomcat Users List
Subject: RE: tomcat 5.0.16 Replication
[EMAIL PROTECTED] bin]# uname -a
Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux
[EMAIL PROTECTED] bin]# java -version
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 11:05 AM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
sun JDK 1.4.2 for Linux
Kernel 2.4.20-8smp
Tomcat 5.0.16 with catalina-cluster.jar from CVS head
Hrmmmare yours SMP servers? Could be something odd with synch
if that is
the case.
-Original Message-
From: Filip Hanik [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 1:01 PM
To: Tomcat Users List
Subject: RE: tomcat 5.0.16 Replication
interesting, mine doesn't work at all unless I set the LD_ASSUME_KERNEL
what VM (version and name) are you using?
Filip
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 10:59 AM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
Now that's really very strange. I
RE: WAS: tomcat 5.0.16 Replication
interesting, never seen that, let me take a look. I have an automated test
that I run to check replication integrity.
since you get this everytime, it shouldn't be a problem for me to do
reproduce this.
do you by any chance have the test program you have and would email it to
me?
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:56 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
I understand that. Here more info...
I make a servlet request that does this:
while ( i 25 ) {
if ( request.getParameters(xxx) == null ) {
System.out.println(param is null);
}
Thread.currentThread().sleep(1000);
i++
}
I then send a couple of request with param xxx=123 at 1 secs interval.
(those request are all made to the same server ie: web1)
Once a couple of them are sent I shutdown web2.
As soon as the INFO: Received member
disappeared:org.apache.catalina.cluster.mcast.McastMember[tcp://10.1
28.29.66:4001,10.128.29.66,4001,
alive=6576] message is received my log gets flooded with param is null
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
the way the login is done, is that a request is being saved in the session
(in a session note, and that is not replicated).
So for a login, you must hit the same server twice in a row. Otherwise you
will see NULL in your request parameters. Also in this release, the
principal is not being replicated, I am working on that right now
Filip
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 11:29 AM
To: Tomcat Users List
Subject: Re: WAS: tomcat 5.0.16 Replication
Been working on testing the new modules and came across something weird.
Wondering if you got any idea on the cause/problem while I continue
investigating
Scenario:
- one web page login in a user. receive 3 parameters (user, password and
community)
- To be able to replicate the problem I had to put a sleep on 25 secs in
code.
- Post one request each second or so and after a couple of them, shudown
one tomcat and restart it. (stop/start sequence)
- A couple of request will start pourring the result, but after some..
when tomcat that got shutdown is restarting, the request parameters
becomes NULL.
As if the replication code was killing my request objects or resetting
my parameters on those requests. Any thought on what it could be?
I even had session mix-up once. when restarting a tomcat a user was
logging in and was assigned a session from another user that never
logged on from his station (that session was idle for more than 10 hours
too).
Just trying to pinpoint where the problem could be. Any pointer would help.
Thanks
Jean-Philippe Bélanger
CGI
Filip Hanik wrote:
Steve and Jean-Philippe,
I've been working on some more replication stuff and made a major change
that I think you might want to use.
I have added a third configuration to the parameter replicationMode,
replicationMode=pooled
With this setting it still is synchronized replication, but uses a pool of
sockets to replicate the data.
It improves performance a lot. Try it out, and let me know how it
works for
you
You will notice the improvement under load.
of course, get latest from cvs first
Filip
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 12:05 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
Hrmmm, perhaps I should reboot using the non-SMP kernel and try it. I'll
have to do that when I get back to the servers.
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 2:04 PM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
uname -a
machine #1) Linux draco 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST
2003 i686
i686 i386 GNU/Linux
machine #2) Linux scorpio 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003
i686 i686 i386 GNU/Linux
java -version:
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
same on both
-Original Message-
From: Filip Hanik [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 1:56 PM
To: Tomcat Users List
Subject: RE: tomcat 5.0.16 Replication
[EMAIL PROTECTED] bin]# uname -a
Linux rh9 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386
GNU/Linux
[EMAIL PROTECTED] bin]# java -version
java version 1.4.2_03
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
-Original Message-
From: Steve Nelson [mailto:[EMAIL PROTECTED]
Sent: Friday, January 09, 2004 11:05 AM
To: 'Tomcat Users List'
Subject: RE: tomcat 5.0.16 Replication
sun JDK 1.4.2 for Linux
Kernel 2.4.20-8smp
Tomcat 5.0.16 with catalina-cluster.jar from CVS head
Hrmmmare yours SMP servers? Could be something odd with synch
if that is
the case
