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Posted to users@wicket.apache.org by Manfred Bergmann <mb...@software-by-mabe.com> on 2016/01/21 10:59:29 UTC
Lots of files in temp folder
Hi.
I had a case where a customer had millions of file in Java tmp folder
produced by Wicket.
There are a lot of those folders:
"org.apache.wicket.protocol.http.WicketServlet-128f3c8-filestore", etc.
and
"file-prefix59601103483491554.tmp".
Most files are very small but the sheer number of them gave them a size of a
couple of giga bytes.
This is not actually a large application. It has two or three pages with
components.
The number of temp files probably has grown over a large period of time
where the Wicket page was always open in a browser and got reloaded often.
Are those files not removed from time to time, automatically?
If not, how can I remove them programmatically?
A, yeah. the Wicket version is 6.19.0. Upgrading to 6.21.0 shows the same
behavior.
Regards,
Manfred
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Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
The "data" files with its parent folder must be deleted automatically when
a session is invalidated either by calling #invalidate[Now]() method or due
to inactivity of the user.
If the file is not removed then it is bug in Wicket that should be fixed!
Please create a quickstart application that shows the problem and attach it
to a ticket in JIRA! Thank you!
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Thu, Jan 21, 2016 at 4:51 PM, bilguun <ar...@gmail.com>
wrote:
> Hello,
>
> I realized those files are removed when session is expired due to the user
> inactivity and main method that removes those files is a method unbind() of
> static inner class
> org.apache.wicket.protocol.http.pagestore.DiskPageStore.SessionEntry. But
> if
> user explicitly logout, it does not delete those files using only
> invalidateNow(). So do I have to call that unbind() method manually to
> delete those files?
>
> Thanks,
>
> Bill
>
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Re: Lots of files in temp folder
Posted by bilguun <ar...@gmail.com>.
Hello,
I realized those files are removed when session is expired due to the user
inactivity and main method that removes those files is a method unbind() of
static inner class
org.apache.wicket.protocol.http.pagestore.DiskPageStore.SessionEntry. But if
user explicitly logout, it does not delete those files using only
invalidateNow(). So do I have to call that unbind() method manually to
delete those files?
Thanks,
Bill
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Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
What do you think about adding a setting to StoreSettings to delete the
folder contents on application startup ?
By default it will be "false"
This way it will work with persistent sessions [1] too.
1.
https://tomcat.apache.org/tomcat-8.0-doc/config/manager.html#Persistence_Across_Restarts
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Sat, Jan 23, 2016 at 12:53 PM, Martijn Dashorst <
martijn.dashorst@gmail.com> wrote:
> Often a segfault or kill -9 causes the temp folders to retain session
> files.
>
> Martijn
>
> On Fri, Jan 22, 2016 at 9:52 PM, Martin Grigorov <mg...@apache.org>
> wrote:
> > https://issues.apache.org/jira/browse/WICKET-6083
> >
> > I also see some pretty old files and folders on our servers.
> > I'll debug it!
> >
> > Martin Grigorov
> > Wicket Training and Consulting
> > https://twitter.com/mtgrigorov
> >
> > On Fri, Jan 22, 2016 at 10:58 AM, Martin Grigorov <mg...@apache.org>
> > wrote:
> >
> >> Hi,
> >>
> >> I think the best would be to test it.
> >> Login into the application, check your sessionid (e.g. check the browser
> >> cookie), then go to /tmp and look for your session folder, it must be
> >> something like
> >>
> /tmp/app-filestore/firstFourLettersFromSessionId/secondFourLettersFromSessionId/TheRestLettersFromSessionId/data
> >>
> >> Then logout explicitly and check whether the folder (and some of its
> >> parent folders if there is no other session with the same prefix in its
> >> sessionid) is removed. Then do the same but leave the session to expire
> and
> >> then check the file structure.
> >>
> >> Martin Grigorov
> >> Wicket Training and Consulting
> >> https://twitter.com/mtgrigorov
> >>
> >> On Fri, Jan 22, 2016 at 10:22 AM, Manfred Bergmann <
> >> mb@software-by-mabe.com> wrote:
> >>
> >>> There are a few empty "file-prefix..." files but the majority of files
> and
> >>> data are in filestore folders. Some with tons of subfolders.
> >>> The logout" button in the app calls Session.invalidate().
> >>> But I'm not certain many actually click this button.
> >>> So I'm assuming that many sessions will just invalidate due to
> inactivity.
> >>>
> >>> Could it be a wrong invalidation time setting on my side?
> >>>
> >>>
> >>> Manfred
> >>>
> >>> --
> >>> View this message in context:
> >>>
> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673394.html
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> >>>
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> >>>
> >>>
> >>
>
>
>
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Re: Lots of files in temp folder
Posted by Martijn Dashorst <ma...@gmail.com>.
Often a segfault or kill -9 causes the temp folders to retain session files.
Martijn
On Fri, Jan 22, 2016 at 9:52 PM, Martin Grigorov <mg...@apache.org> wrote:
> https://issues.apache.org/jira/browse/WICKET-6083
>
> I also see some pretty old files and folders on our servers.
> I'll debug it!
>
> Martin Grigorov
> Wicket Training and Consulting
> https://twitter.com/mtgrigorov
>
> On Fri, Jan 22, 2016 at 10:58 AM, Martin Grigorov <mg...@apache.org>
> wrote:
>
>> Hi,
>>
>> I think the best would be to test it.
>> Login into the application, check your sessionid (e.g. check the browser
>> cookie), then go to /tmp and look for your session folder, it must be
>> something like
>> /tmp/app-filestore/firstFourLettersFromSessionId/secondFourLettersFromSessionId/TheRestLettersFromSessionId/data
>>
>> Then logout explicitly and check whether the folder (and some of its
>> parent folders if there is no other session with the same prefix in its
>> sessionid) is removed. Then do the same but leave the session to expire and
>> then check the file structure.
>>
>> Martin Grigorov
>> Wicket Training and Consulting
>> https://twitter.com/mtgrigorov
>>
>> On Fri, Jan 22, 2016 at 10:22 AM, Manfred Bergmann <
>> mb@software-by-mabe.com> wrote:
>>
>>> There are a few empty "file-prefix..." files but the majority of files and
>>> data are in filestore folders. Some with tons of subfolders.
>>> The logout" button in the app calls Session.invalidate().
>>> But I'm not certain many actually click this button.
>>> So I'm assuming that many sessions will just invalidate due to inactivity.
>>>
>>> Could it be a wrong invalidation time setting on my side?
>>>
>>>
>>> Manfred
>>>
>>> --
>>> View this message in context:
>>> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673394.html
>>> Sent from the Users forum mailing list archive at Nabble.com.
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>
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Re: Lots of files in temp folder
Posted by Martin Grigorov <ma...@gmail.com>.
The web server matters because it is responsible to notify Wicket when the
session is invalidated.
7.2.0 is being voted at the moment. If no issues are found then it should
be released in few days.
On Jan 22, 2016 10:44 PM, "Manfred Bergmann" <mb...@software-by-mabe.com>
wrote:
> I'm using the latest version of Jetty 6.
> Yeah, rather old, I know. Should be updated.
> You think it could be related to the Servlet engine?
>
> I'll see that I can make some time tomorrow for testing.
> Updating to Wicket 7 wouldn't be such a bad idea.
> In the ticket (WICKET-6083) you test against Wicket 7.2-SNAPSHOT.
> When is this due to arrive?
>
>
> Manfred
>
> --
> View this message in context:
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>
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Re: Lots of files in temp folder
Posted by Manfred Bergmann <mb...@software-by-mabe.com>.
I'm using the latest version of Jetty 6.
Yeah, rather old, I know. Should be updated.
You think it could be related to the Servlet engine?
I'll see that I can make some time tomorrow for testing.
Updating to Wicket 7 wouldn't be such a bad idea.
In the ticket (WICKET-6083) you test against Wicket 7.2-SNAPSHOT.
When is this due to arrive?
Manfred
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Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
Everything works fine locally.
Both session timeout and manual invalidation (Session#invalidate() and
#invalidateNow()) work fine.
I use Tomcat 7.0.63 here and 7.0.65 at production.
Which web server do you use?
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Fri, Jan 22, 2016 at 9:52 PM, Martin Grigorov <mg...@apache.org>
wrote:
> https://issues.apache.org/jira/browse/WICKET-6083
>
> I also see some pretty old files and folders on our servers.
> I'll debug it!
>
> Martin Grigorov
> Wicket Training and Consulting
> https://twitter.com/mtgrigorov
>
> On Fri, Jan 22, 2016 at 10:58 AM, Martin Grigorov <mg...@apache.org>
> wrote:
>
>> Hi,
>>
>> I think the best would be to test it.
>> Login into the application, check your sessionid (e.g. check the browser
>> cookie), then go to /tmp and look for your session folder, it must be
>> something like
>> /tmp/app-filestore/firstFourLettersFromSessionId/secondFourLettersFromSessionId/TheRestLettersFromSessionId/data
>>
>> Then logout explicitly and check whether the folder (and some of its
>> parent folders if there is no other session with the same prefix in its
>> sessionid) is removed. Then do the same but leave the session to expire and
>> then check the file structure.
>>
>> Martin Grigorov
>> Wicket Training and Consulting
>> https://twitter.com/mtgrigorov
>>
>> On Fri, Jan 22, 2016 at 10:22 AM, Manfred Bergmann <
>> mb@software-by-mabe.com> wrote:
>>
>>> There are a few empty "file-prefix..." files but the majority of files
>>> and
>>> data are in filestore folders. Some with tons of subfolders.
>>> The logout" button in the app calls Session.invalidate().
>>> But I'm not certain many actually click this button.
>>> So I'm assuming that many sessions will just invalidate due to
>>> inactivity.
>>>
>>> Could it be a wrong invalidation time setting on my side?
>>>
>>>
>>> Manfred
>>>
>>> --
>>> View this message in context:
>>> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673394.html
>>> Sent from the Users forum mailing list archive at Nabble.com.
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>
>
Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
https://issues.apache.org/jira/browse/WICKET-6083
I also see some pretty old files and folders on our servers.
I'll debug it!
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Fri, Jan 22, 2016 at 10:58 AM, Martin Grigorov <mg...@apache.org>
wrote:
> Hi,
>
> I think the best would be to test it.
> Login into the application, check your sessionid (e.g. check the browser
> cookie), then go to /tmp and look for your session folder, it must be
> something like
> /tmp/app-filestore/firstFourLettersFromSessionId/secondFourLettersFromSessionId/TheRestLettersFromSessionId/data
>
> Then logout explicitly and check whether the folder (and some of its
> parent folders if there is no other session with the same prefix in its
> sessionid) is removed. Then do the same but leave the session to expire and
> then check the file structure.
>
> Martin Grigorov
> Wicket Training and Consulting
> https://twitter.com/mtgrigorov
>
> On Fri, Jan 22, 2016 at 10:22 AM, Manfred Bergmann <
> mb@software-by-mabe.com> wrote:
>
>> There are a few empty "file-prefix..." files but the majority of files and
>> data are in filestore folders. Some with tons of subfolders.
>> The logout" button in the app calls Session.invalidate().
>> But I'm not certain many actually click this button.
>> So I'm assuming that many sessions will just invalidate due to inactivity.
>>
>> Could it be a wrong invalidation time setting on my side?
>>
>>
>> Manfred
>>
>> --
>> View this message in context:
>> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673394.html
>> Sent from the Users forum mailing list archive at Nabble.com.
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>
Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
Hi,
I think the best would be to test it.
Login into the application, check your sessionid (e.g. check the browser
cookie), then go to /tmp and look for your session folder, it must be
something like
/tmp/app-filestore/firstFourLettersFromSessionId/secondFourLettersFromSessionId/TheRestLettersFromSessionId/data
Then logout explicitly and check whether the folder (and some of its parent
folders if there is no other session with the same prefix in its sessionid)
is removed. Then do the same but leave the session to expire and then check
the file structure.
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Fri, Jan 22, 2016 at 10:22 AM, Manfred Bergmann <mb...@software-by-mabe.com>
wrote:
> There are a few empty "file-prefix..." files but the majority of files and
> data are in filestore folders. Some with tons of subfolders.
> The logout" button in the app calls Session.invalidate().
> But I'm not certain many actually click this button.
> So I'm assuming that many sessions will just invalidate due to inactivity.
>
> Could it be a wrong invalidation time setting on my side?
>
>
> Manfred
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673394.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
> ---------------------------------------------------------------------
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>
>
Re: Lots of files in temp folder
Posted by Manfred Bergmann <mb...@software-by-mabe.com>.
There are a few empty "file-prefix..." files but the majority of files and
data are in filestore folders. Some with tons of subfolders.
The logout" button in the app calls Session.invalidate().
But I'm not certain many actually click this button.
So I'm assuming that many sessions will just invalidate due to inactivity.
Could it be a wrong invalidation time setting on my side?
Manfred
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Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
OK.
This looks like a bug too.
grep says:
wicket-core/src/main/java/org/apache/wicket/settings/StoreSettings.java:
fileStoreFolder
= File.createTempFile("file-prefix", null).getParentFile();
So it seems Wicket creates a temporary file just to get a reference to the
/tmp folder and discards this file.
We should delete it!
Are those files empty on your system?
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Thu, Jan 21, 2016 at 4:47 PM, Manfred Bergmann <mb...@software-by-mabe.com>
wrote:
> Hi.
>
> Yeah, the filestore.
> Hmm, there is no file-upload functionality in this Wicket app. I'm
> wondering
> why those file are created then?
>
> I just had a check. There were 8GB of data from those files.
>
>
> Manfred
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673388.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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>
Re: Lots of files in temp folder
Posted by Ernesto Reinaldo Barreiro <re...@gmail.com>.
AFAIK wicket serializes old version of pages into file system
On Thu, Jan 21, 2016 at 4:47 PM, Manfred Bergmann <mb...@software-by-mabe.com>
wrote:
> Hi.
>
> Yeah, the filestore.
> Hmm, there is no file-upload functionality in this Wicket app. I'm
> wondering
> why those file are created then?
>
> I just had a check. There were 8GB of data from those files.
>
>
> Manfred
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673388.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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Re: Lots of files in temp folder
Posted by Manfred Bergmann <mb...@software-by-mabe.com>.
Hi.
Yeah, the filestore.
Hmm, there is no file-upload functionality in this Wicket app. I'm wondering
why those file are created then?
I just had a check. There were 8GB of data from those files.
Manfred
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Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
Hi,
The folder for the session data (filestore) should be removed with the
invalidation of the user session (either expiration or explicit logout).
But there must be one such folder in /tmp with many sub-folders.
Here it looks like:
/tmp/jetty-0.0.0.0-8888-webapp-_myapp-any-/
└── MyApplication-filestore
└── 2200
└── 5314
└── 1i0svs4a1edbvdenm01kfwyzy
└── data
Whenever a user session is invalidated a branch should be removed.
The "file-prefix....tmp" file I believe is created by commons-fileupload.
It supports file cleaner which by default removes the files when the Java
process terminates, e.g. when you restart your web server.
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Thu, Jan 21, 2016 at 10:59 AM, Manfred Bergmann <mb...@software-by-mabe.com>
wrote:
> Hi.
>
> I had a case where a customer had millions of file in Java tmp folder
> produced by Wicket.
> There are a lot of those folders:
> "org.apache.wicket.protocol.http.WicketServlet-128f3c8-filestore", etc.
> and
> "file-prefix59601103483491554.tmp".
>
> Most files are very small but the sheer number of them gave them a size of
> a
> couple of giga bytes.
> This is not actually a large application. It has two or three pages with
> components.
>
> The number of temp files probably has grown over a large period of time
> where the Wicket page was always open in a browser and got reloaded often.
>
> Are those files not removed from time to time, automatically?
> If not, how can I remove them programmatically?
>
> A, yeah. the Wicket version is 6.19.0. Upgrading to 6.21.0 shows the same
> behavior.
>
> Regards,
> Manfred
>
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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Re: Lots of files in temp folder
Posted by Martin Grigorov <mg...@apache.org>.
Thanks for sharing this information!
I'll wait some more and most probably close the ticket as "Cannot
reproduce".
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Tue, Jan 26, 2016 at 12:41 PM, Manfred Bergmann <mb...@software-by-mabe.com>
wrote:
> Thanks for all your efforts.
>
> I think the problem was due to a missing session-timeout configuration.
> In my app Jetty is started programmatically, including the Wicket filter
> setup.
> However, since there is no web.xml there was no session-timeout config.
> I have added this now and things seem to be better now.
>
>
> Manfred
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Lots-of-files-in-temp-folder-tp4673379p4673435.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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>
Re: Lots of files in temp folder
Posted by Manfred Bergmann <mb...@software-by-mabe.com>.
Thanks for all your efforts.
I think the problem was due to a missing session-timeout configuration.
In my app Jetty is started programmatically, including the Wicket filter
setup.
However, since there is no web.xml there was no session-timeout config.
I have added this now and things seem to be better now.
Manfred
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