Re: ComponentNotFoundException and Clustering failover

2017-04-14 Thread Martin Grigorov
On Thu, Apr 13, 2017 at 12:27 AM, Wayne W wrote: > Hi Martin, > > Ok I've opened a ticket. I did some more debugging and I've described it to > the best of my understanding. I could try and make a patch but its complex > code and I don't want to mess anything up!! -

Re: ComponentNotFoundException and Clustering failover

2017-04-12 Thread Wayne W
Hi Martin, Ok I've opened a ticket. I did some more debugging and I've described it to the best of my understanding. I could try and make a patch but its complex code and I don't want to mess anything up!! - not very confident with Wicket. https://issues.apache.org/jira/browse/WICKET-6356

Re: ComponentNotFoundException and Clustering failover

2017-04-03 Thread Martin Grigorov
Hi, On Thu, Mar 30, 2017 at 11:21 PM, Wayne W wrote: > Please ignore my last email I have done a lot more debugging and I *think* > I understand why replication does not work for us: > > > Whenever a stateful pages is used (touched) the SessionEntry is updated, > >

Re: ComponentNotFoundException and Clustering failover

2017-03-30 Thread Wayne W
Please ignore my last email I have done a lot more debugging and I *think* I understand why replication does not work for us: Whenever a stateful pages is used (touched) the SessionEntry is updated, > i.e. the page is put into it. > The SessionEntry is stored as an attribute in the HTTP Session.

Re: ComponentNotFoundException and Clustering failover

2017-03-30 Thread Wayne W
On Thu, Mar 30, 2017 at 4:09 PM, Martin Grigorov wrote: > > > Whenever a stateful pages is used (touched) the SessionEntry is updated, > i.e. the page is put into it. > Yes I can see that happening in PageStoreManager.storeTouchedPages() > The SessionEntry is stored as

Re: ComponentNotFoundException and Clustering failover

2017-03-30 Thread Martin Grigorov
On Thu, Mar 30, 2017 at 5:00 PM, Wayne W wrote: > Hi Martin, > > yes we are on 6. I've just spent the day upgrading to 7 and got it running > ok. I've been debugging and I'm confused to one aspect: > > The PageManager is stored in the Application. The page manger has

Re: ComponentNotFoundException and Clustering failover

2017-03-30 Thread Wayne W
Hi Martin, yes we are on 6. I've just spent the day upgrading to 7 and got it running ok. I've been debugging and I'm confused to one aspect: The PageManager is stored in the Application. The page manger has the RequestAdaptor/PageStoreManager stored within that holds the pages and components. I

Re: ComponentNotFoundException and Clustering failover

2017-03-28 Thread Martin Grigorov
Hi, Did you mention already which version of Wicket you use ? There was an improvement related to reusing the page parameters when constructing a new page instance in 7.0.0. I have the feeling you are using 6.x. Am I correct ? Martin Grigorov Wicket Training and Consulting

Re: ComponentNotFoundException and Clustering failover

2017-03-28 Thread Wayne W
Hello Martin, so I've been trying to still get to the bottom of this days later. So my understanding is getting better and it appears that the session itself is replicated fine. However I've tracked my issue down to the following: - If I have a page that has 2 links at the top. Link A is a

Re: ComponentNotFoundException and Clustering failover

2017-03-24 Thread Martin Grigorov
Hi, On Fri, Mar 24, 2017 at 1:31 PM, Wayne W wrote: > Thanks Martin, > > I have a theory what this is, perhaps you could confirm? > > What I observe is the following with the replication: If I visit page A and > then visit page B, then kill the instance I am on the

Re: ComponentNotFoundException and Clustering failover

2017-03-24 Thread Wayne W
Thanks Martin, I have a theory what this is, perhaps you could confirm? What I observe is the following with the replication: If I visit page A and then visit page B, then kill the instance I am on the session is successfully failed over to the other node. Now I'm still looking at page B in the

Re: ComponentNotFoundException and Clustering failover

2017-03-24 Thread Martin Grigorov
Hi, Once the http session is replicated this method should be executed on the node that did not process the request org.apache.wicket.page.PageStoreManager.SessionEntry#readObject(). Here Wicket will either store the page(s) on the disk or will schedule them for storing. There is no much usage of

Re: ComponentNotFoundException and Clustering failover

2017-03-23 Thread Wayne W
If I put the AbstractDefaultAjaxBehavior back in, it always fails. If I remove the AbstractDefaultAjaxBehavior most of the time it works, but every now and then it fails to replicate. Its really inconsistent. I have no idea how to get to the bottom of this. Any pointers or help is much

Re: ComponentNotFoundException and Clustering failover

2017-03-23 Thread Wayne W
So it seems the homepage is not the only page. However removing the AbstractDefaultAjaxBehavior makes no difference I still get the same issues. Just don;t know where to start with this one. Is there a way I can turn on the logging around replication in wicket? On Thu, Mar 23, 2017 at 4:27 PM,

Re: ComponentNotFoundException and Clustering failover

2017-03-23 Thread Wayne W
Hi Martin, no - I still get the ComponentNotFoundException in the new instance. :-/ On Thu, Mar 23, 2017 at 3:57 PM, Martin Grigorov wrote: > Hi, > > On Thu, Mar 23, 2017 at 4:20 PM, Wayne W > wrote: > > > Hi Martin, > > > > that was a typo

Re: ComponentNotFoundException and Clustering failover

2017-03-23 Thread Martin Grigorov
Hi, On Thu, Mar 23, 2017 at 4:20 PM, Wayne W wrote: > Hi Martin, > > that was a typo on my part. I've been doing a lot more testing before I > replied to make sure things are as I say. This is what I am observing: > > >- I have a 2 node tomcat cluster setup with

Re: ComponentNotFoundException and Clustering failover

2017-03-23 Thread Wayne W
Hi Martin, that was a typo on my part. I've been doing a lot more testing before I replied to make sure things are as I say. This is what I am observing: - I have a 2 node tomcat cluster setup with apache balancing between them locally on my machine. - Testing with a very simple Wicket

Re: ComponentNotFoundException and Clustering failover

2017-03-22 Thread Martin Grigorov
Hi, "I can stop one of the instances and I'm not logged in" This statement says that you don't really have a properly configured failover. If those two Tomcat instances are in a cluster then the http sessions should be replicated and you should stay logged in no matter which one is serving the