There are still other ways around this. If every process registered itself via unique file in a known directory and a Page Store thread touched this file every say 5 minutes, this gives more information to a thread to know whether or not delete a Page Store directory associated with unique ID.
For example, MyWebSite-filestore/running_processes/uid1 MyWebSite-filestore/running_processes/uid2 MyWebSite-filestore/running_processes/uid2 Each Page store thread would then check the uid files that it did not create. For example, process 1 would check to see if uid1 and uid2 have been touched in the last hour (just making up something way greater than 5 minutes). If not, remove their associated PageStore files. I will admit this is a bit more involved, but i am trying to present a solution that doesn't require any configuration from a user perspective. Johan Compagner wrote: > > no it doesnt matter what id i generate or get. This is still not > enough because it doesnt say any thing if i can delete it or not. i > have an id 1 then i restart and i have id 2 can i then delete > everything from 1? No i cant because there could be live sessions from > 1. > > On 11/14/07, Chris Lintz <[EMAIL PROTECTED]> wrote: >> >> The process ID is just an idea for a unique ID. If that wont work for >> you, >> lets dream another unique ID . >> >> >> >> Johan Compagner wrote: >> > >> > ohh wait that also doesn't work (process id can also be generated once >> > ofcourse) but you can have mulitply dirs created with 10 different >> > processes that are all valid. so that doesn't solve anything >> > >> > On 11/14/07, Johan Compagner <[EMAIL PROTECTED]> wrote: >> >> can you get the current process id by general api in java? have to >> >> look at Runtime then. >> >> >> >> On 11/14/07, Chris Lintz <[EMAIL PROTECTED]> wrote: >> >> > >> >> > That makes sense. Another thought that possibly makes it a bit >> easier >> >> is >> >> to >> >> > name the page store directories with a unique process identifier. >> For >> >> > example, if my session ID is B31598D4B206B75161AFE08FB5610D54.n1 and >> >> the >> >> > process ID is 123456, then the Page store directory would be: >> >> > >> >> > MyWebSite-filestore/123456/B31598D4B206B75161AFE08FB5610D54.n1 >> >> > >> >> > With a structure like that it would be easy for a thread to remove >> the >> >> Page >> >> > store directories that do not have the current process ID. >> >> > >> >> > Just a thought. >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > Johan Compagner wrote: >> >> > > >> >> > > Yes the pagestore knows which files it makes, but it is not the >> >> controller >> >> > > of those files >> >> > > because the only thing that controls if the file must be deleted >> or >> >> not >> >> is >> >> > > the servlet container >> >> > > with the session objects. >> >> > > >> >> > > and as far as i know there is no api where i can ask which >> sessions >> >> are >> >> > > still active. >> >> > > So the only thing we could do is have a thread running that is >> waking >> >> up >> >> > > every day once >> >> > > and checks if there are files older then X. And that thread must >> be >> >> > > configured by you >> >> > > explicitly setting the timeout that you want to have. >> >> > > >> >> > > johan >> >> > > >> >> > > >> >> > > >> >> > > >> >> > > On Nov 14, 2007 12:04 AM, Chris Lintz >> <[EMAIL PROTECTED]> >> >> > > wrote: >> >> > > >> >> > >> >> >> > >> I think from previous threads there was discussion about >> something >> >> that >> >> > >> you >> >> > >> could do. For instance, the Page store should know what cache >> files >> >> it >> >> > >> is >> >> > >> controlling. By that logic alone it can deduce what it is no >> longer >> >> > >> referencing and cleanup what was left form it. >> >> > >> >> >> > >> It seems silly to me to ask people to rely on graceful restarts >> or >> >> write >> >> > >> your own cleanup script from a framework that created cache >> files. >> >> It >> >> > >> seems >> >> > >> fairly standard to ask "clean up what was yours." I'd like to >> hear >> >> > >> other >> >> > >> input from average users. >> >> > >> >> >> > >> >> >> > >> >> >> > >> Johan Compagner wrote: >> >> > >> > >> >> > >> > as long as your server doesn't crash and isn't terminate by a >> kill >> >> -9 >> >> > >> > no files are leaked.. >> >> > >> > >> >> > >> > When that does happen then yes you have to clean it up. >> >> > >> > If you dont care about those files after a restart then in the >> >> script >> >> > >> that >> >> > >> > starts your webcontainer >> >> > >> > you will just remove all the files in the work dir. >> >> > >> > >> >> > >> > I don't think wicket can do much about it. >> >> > >> > >> >> > >> > johan >> >> > >> > >> >> > >> > >> >> > >> > On Nov 13, 2007 10:41 PM, Chris Lintz >> >> <[EMAIL PROTECTED]> >> >> > >> > wrote: >> >> > >> > >> >> > >> >> >> >> > >> >> All, >> >> > >> >> I have submitted a Jira on this topic. I will leave it to the >> >> great >> >> > >> >> minds >> >> > >> >> to debate. In any case, it appears restarting the container >> >> cannot >> >> > >> >> notify >> >> > >> >> the HttpSessionListeners that are bound to the page store >> files. >> >> It >> >> > >> >> would >> >> > >> >> be nice if the framework can cleanup what I consider a leak of >> >> the >> >> > >> cache >> >> > >> >> files it created. Otherwise folks like myself living in an >> high >> >> > >> traffic >> >> > >> >> site are forced to generate script look for old page store >> cache >> >> > >> files. >> >> > >> >> >> >> > >> >> https://issues.apache.org/jira/browse/WICKET-1158 >> >> > >> >> >> >> > >> >> >> >> > >> >> Johan Compagner wrote: >> >> > >> >> > >> >> > >> >> >> >> >> > >> >> >> > And from top of my head there is no api to get all the >> >> current >> >> > >> >> session >> >> > >> >> >> id's >> >> > >> >> >> > from >> >> > >> >> >> > an instance when the instance does start up.. >> >> > >> >> >> >> >> > >> >> >> But we could ditch ALL the directories it can find in the >> temp >> >> > >> >> >> directory the page store uses when starting up, right? >> >> > >> >> >> >> >> > >> >> > >> >> > >> >> > No we can't do that, If you as you should terminate your web >> >> > >> container >> >> > >> >> > gracefully >> >> > >> >> > then the web container will save all the sessions to disk. >> Then >> >> if >> >> > >> you >> >> > >> >> > restart it again >> >> > >> >> > all the sessions are loaded again. And yes the application >> >> works >> >> > >> just >> >> > >> >> as >> >> > >> >> > it was never >> >> > >> >> > restarted. But if we throw away all the page stores. Then we >> >> loose >> >> > >> all >> >> > >> >> the >> >> > >> >> > data >> >> > >> >> > of sessions that are currently active. >> >> > >> >> > >> >> > >> >> > The only thing i can think of is having some check that only >> >> deletes >> >> > >> >> > things >> >> > >> >> > that are not touched for X hours or days. >> >> > >> >> > >> >> > >> >> > johan >> >> > >> >> > >> >> > >> >> > >> >> > >> >> >> >> > >> >> -- >> >> > >> >> View this message in context: >> >> > >> >> >> >> > >> >> >> > >> >> >> http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13735298 >> >> > >> >> Sent from the Wicket - User mailing list archive at >> >> > >> >> Nabble.com <http://nabble.com/><http://nabble.com/> >> >> > >> >> . >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> --------------------------------------------------------------------- >> >> > >> >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> >> > >> >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > >> >> >> >> > >> >> >> >> > >> > >> >> > >> > >> >> > >> >> >> > >> -- >> >> > >> View this message in context: >> >> > >> >> >> > >> >> >> http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13736689 >> >> > >> Sent from the Wicket - User mailing list archive at >> >> > >> Nabble.com<http://nabble.com/> >> >> > >> . >> >> > >> >> >> > >> >> >> > >> >> >> --------------------------------------------------------------------- >> >> > >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> >> > >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > >> >> >> > >> >> >> > > >> >> > > >> >> > >> >> > -- >> >> > View this message in context: >> >> > >> >> >> http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13751284 >> >> > Sent from the Wicket - User mailing list archive at Nabble.com. >> >> > >> >> > >> >> > >> --------------------------------------------------------------------- >> >> > 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] >> > >> > >> > >> >> -- >> View this message in context: >> http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13753054 >> Sent from the Wicket - User mailing list archive at Nabble.com. >> >> >> --------------------------------------------------------------------- >> 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] > > > -- View this message in context: http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13754524 Sent from the Wicket - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
