Re: [Resin-interest] Blank Welcome Pages
Just to check, but this occurs only on startup or at least the first time the /index.html is accessed, not at a later time? -- Scott On Apr 20, 2008, at 8:30 AM, Charles Lyons wrote: /caucho-status would show the current mapping in mod_caucho. That would be the place to look. At the moment I've got the entry /^/?(index.html)?$ under the url- pattern on /caucho-status. My regexp was ^/?(index.html)?$ so I'm not sure why the extra / was inserted. Resin is the server reporting the 404 (rather than Apache), so mod_caucho is doing its job correctly, just Resin is refusing to serve those mappings sometimes, with no errors in the logs. Since mod_caucho doesn't understand url-regexp, how are you telling mod_caucho that your pages should be handled by Resin? Using: servlet-mapping url-pattern=* servlet-name=plugin_match / I also set my default host to have servlet-name=plugin_ignore so only explicitly enabled web-apps are served by Resin (otherwise I was getting domains being served by Resin rather than Apache and I didn't want to enable mod_caucho for each domain in Apache as well as updating Resin config). Charles. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
This occurs from startup (first request for the resource) onwards and always results in 404 for the entire time the container is up (and, frequently, even after restarting too). Charles. On Apr 22 2008, Scott Ferguson wrote: Just to check, but this occurs only on startup or at least the first time the /index.html is accessed, not at a later time? ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
On Apr 20, 2008, at 8:30 AM, Charles Lyons wrote: /caucho-status would show the current mapping in mod_caucho. That would be the place to look. At the moment I've got the entry /^/?(index.html)?$ under the url- pattern on /caucho-status. My regexp was ^/?(index.html)?$ so I'm not sure why the extra / was inserted. It's related to the fact that mod_caucho doesn't understand regexps. So it's interpreting the regexp as a url-pattern. (Which doesn't actually matter in this case because you've got a plugin_match below.) Resin is the server reporting the 404 (rather than Apache), so mod_caucho is doing its job correctly, just Resin is refusing to serve those mappings sometimes, with no errors in the logs. Thanks. I've updated the bug report. It sounds like it's a Resin- specific issue, not related to mod_caucho (which is good since it should make debugging and testing easier.) -- Scott Since mod_caucho doesn't understand url-regexp, how are you telling mod_caucho that your pages should be handled by Resin? Using: servlet-mapping url-pattern=* servlet-name=plugin_match / I also set my default host to have servlet-name=plugin_ignore so only explicitly enabled web-apps are served by Resin (otherwise I was getting domains being served by Resin rather than Apache and I didn't want to enable mod_caucho for each domain in Apache as well as updating Resin config). Charles. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
After looking back through our internal emails regarding this, it
appears it is not only related to welcome files, but from what we have
seen so far it has only been affecting static content (specifically
.html files). I don't see any exceptions in the logs when this is
happening, but as I mentioned before I don't have full debug logging
turned on because it is a production system. There doesn't seem to be
any pattern to the files which get affected other than the fact that
they are all HTML files that end in .html and that includes welcome
files when the requested URL doesn't include the file name (the welcome
file would be index.html).
When this happens we typically see it not working for a host alias
http://www.mydomain.com/file.html but it works fine if you go to
http://mydomain.com/file.html. This makes me think it has something to
do with the cache because the host alias with www is probably accessed
much more frequently than without it, so maybe the problem occurs after
the cache fills up.
Thanks for your help,
Shane
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Ferguson
Sent: Saturday, April 19, 2008 1:47 PM
To: General Discussion for the Resin application server
Subject: Re: [Resin-interest] Blank Welcome Pages
On Apr 18, 2008, at 3:23 PM, Shane Cruz wrote:
We are using Resin Pro 3.0.24 and have noticed an intermittent problem
that is rather weird. After the JVM has been running for a few days, we
some times see the case where HTTP requests for certain files return a
blank HTML page such as:
This seems to happen mostly with welcome files (index.html), and we see
behavior such as:
Mostly welcome files or always?
Is there any kind of exception in the log file?
When it happens, it seems to affect a lot of pages at once, but
only on the one JVM.
Is there any pattern to the pages affected? Is this always cacheable
pages or some cacheable and some non-cacheable?
-- Scott
Restarting that JVM immediately fixes the problem... at least for a few
days.
Our welcome file list (in app-default.xml) looks normal:
welcome-file-list
welcome-fileindex.html/welcome-file
welcome-fileindex.htm/welcome-file
welcome-fileindex.jsp/welcome-file
welcome-fileindex.php/welcome-file
/welcome-file-list
We are caching pages (in resin.conf):
resin:if test=${isResinProfessional}
cache path=cache memory-size=10M/
/resin:if
I don't want to turn on full debug logging because this happens in our
production environment but only after the JVM has been running for
several days. I would prefer not to slow down the server for a long
time with the extra logging.
Has anyone else seen anything like this or know what might be causing
it?
Thanks,
Shane
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
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Re: [Resin-interest] Blank Welcome Pages
On Apr 18, 2008, at 4:30 PM, Charles Lyons wrote: Has anyone else seen anything like this or know what might be causing it? I can't help you but to add weight to this, I have a similar and frequent problem in 3.1.5 GPL which is an issue each time I restart the container. I have a servlet mapped to the root of the Web server - i.e. it is supposed to execute just like a welcome page for: http://www.mydomain.ext/ I can't use the servlet-mapping of / since that's defined in Java EE as the default servlet and will execute for *every* request to an otherwise unmatched URL, which isn't what I want. I just want the servlet to handle requests for the root. The obvious thing in Resin is to add a servlet-mapping with a url-regexp attribute: servlet-mapping url-regexp=^/?$ servlet-name=MyServlet / This worked for a while, until a restart. It then gave a 404 even after several reloads, restarts and a full stop and start. So I changed it to url-regexp=^/index.html$ which again worked, until another restart (weeks later) - I also couldn't then revert back to ^/?$ as the pattern as that still gave 404. Finally I'm left using ^/index.jsp$ as my pattern since that is what's working since the last restart. So definitely something weird going on with those index page mappings. This looks like a different issue. I've added it as http://bugs.caucho.com/view.php?id=2611 I am using Resin with mod_caucho for an Apache 2 front end. I imagine mod_caucho might be causing the issues with patterns still giving 404s even after a complete restart of Resin? I guess also mod_caucho may be the main culprit in all this, though that's a (far from educated) guess. /caucho-status would show the current mapping in mod_caucho. That would be the place to look. Since mod_caucho doesn't understand url-regexp, how are you telling mod_caucho that your pages should be handled by Resin? -- Scott Charles. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
On Apr 19, 2008, at 3:40 AM, Stargazer wrote: Charles Lyons wrote: Has anyone else seen anything like this or know what might be causing it? I can't help you but to add weight to this, I have a similar and frequent problem in 3.1.5 GPL which is an issue each time I restart the container. I too can confirm random blank pages are seen, across several sites, and after several days uptime. I'd put this down to heavy use of external RSS content, and somehow the external RSS containing dodgy data, but now you've pointed it out it does seem I am experiencing the same thing as you. This is an Apache + mod_caucho setup if thats useful. Are you seeing this for cached pages or is this a mapping issue like Charles is seeing? Does /caucho-status show anything odd when this situation occurs? -- Scott ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
On Apr 20, 2008, at 6:41 AM, Shane Cruz wrote:
After looking back through our internal emails regarding this, it
appears it is not only related to welcome files, but from what we
have seen so far it has only been affecting static content
(specifically .html files). I don’t see any exceptions in the logs
when this is happening, but as I mentioned before I don’t have full
debug logging turned on because it is a production system.
Our exceptions are logged at the warning level, so you'd see them in
the default setting, i.e. it doesn't look like an exception issue.
There doesn’t seem to be any pattern to the files which get affected
other than the fact that they are all HTML files that end in .html
and that includes welcome files when the requested URL doesn’t
include the file name (the welcome file would be index.html).
When this happens we typically see it not working for a host alias http://www.mydomain.com/file.html
but it works fine if you go to http://mydomain.com/file.html. This
makes me think it has something to do with the cache because the
host alias with www is probably accessed much more frequently than
without it, so maybe the problem occurs after the cache fills up.
That definitely sounds like the cache. One of the big changes in 3.1
was a reworking of the underlying cache store (early in 3.1, like
3.1.1), to solve problems very similar to what you're reporting. So,
it's possible you're seeing behavior that's been fixed in 3.1. I'll
work through the whole file - cache path to see if there's anything
still wrong in 3.1.
FYI, with the upcoming 3.1.6 release (2-3 weeks), the 3.1.x branch
will move to stable and new development will move to a 3.2 branch.
-- Scott
Thanks for your help,
Shane
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
] On Behalf Of Scott Ferguson
Sent: Saturday, April 19, 2008 1:47 PM
To: General Discussion for the Resin application server
Subject: Re: [Resin-interest] Blank Welcome Pages
On Apr 18, 2008, at 3:23 PM, Shane Cruz wrote:
We are using Resin Pro 3.0.24 and have noticed an intermittent
problem that is rather weird. After the JVM has been running for a
few days, we some times see the case where HTTP requests for certain
files return a blank HTML page such as:
This seems to happen mostly with welcome files (index.html), and we
see behavior such as:
Mostly welcome files or always?
Is there any kind of exception in the log file?
When it happens, it seems to affect a lot of pages at once, but
only on the one JVM.
Is there any pattern to the pages affected? Is this always
cacheable pages or some cacheable and some non-cacheable?
-- Scott
Restarting that JVM immediately fixes the problem… at least for a
few days.
Our welcome file list (in app-default.xml) looks normal:
welcome-file-list
welcome-fileindex.html/welcome-file
welcome-fileindex.htm/welcome-file
welcome-fileindex.jsp/welcome-file
welcome-fileindex.php/welcome-file
/welcome-file-list
We are caching pages (in resin.conf):
resin:if test=${isResinProfessional}
cache path=cache memory-size=10M/
/resin:if
I don’t want to turn on full debug logging because this happens in
our production environment but only after the JVM has been running
for several days. I would prefer not to slow down the server for a
long time with the extra logging.
Has anyone else seen anything like this or know what might be
causing it?
Thanks,
Shane
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
/caucho-status would show the current mapping in mod_caucho. That would be the place to look. At the moment I've got the entry /^/?(index.html)?$ under the url-pattern on /caucho-status. My regexp was ^/?(index.html)?$ so I'm not sure why the extra / was inserted. Resin is the server reporting the 404 (rather than Apache), so mod_caucho is doing its job correctly, just Resin is refusing to serve those mappings sometimes, with no errors in the logs. Since mod_caucho doesn't understand url-regexp, how are you telling mod_caucho that your pages should be handled by Resin? Using: servlet-mapping url-pattern=* servlet-name=plugin_match / I also set my default host to have servlet-name=plugin_ignore so only explicitly enabled web-apps are served by Resin (otherwise I was getting domains being served by Resin rather than Apache and I didn't want to enable mod_caucho for each domain in Apache as well as updating Resin config). Charles. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
Scott Ferguson wrote: On Apr 19, 2008, at 3:40 AM, Stargazer wrote: Charles Lyons wrote: Has anyone else seen anything like this or know what might be causing it? I can't help you but to add weight to this, I have a similar and frequent problem in 3.1.5 GPL which is an issue each time I restart the container. I too can confirm random blank pages are seen, across several sites, and after several days uptime. I'd put this down to heavy use of external RSS content, and somehow the external RSS containing dodgy data, but now you've pointed it out it does seem I am experiencing the same thing as you. This is an Apache + mod_caucho setup if thats useful. Are you seeing this for cached pages or is this a mapping issue like Charles is seeing? Does /caucho-status show anything odd when this situation occurs? -- Scott As I hinted, I didn't suspect this could be a resin bug until now so I'll report back with those details should it happen again. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
On Apr 18, 2008, at 3:23 PM, Shane Cruz wrote:
We are using Resin Pro 3.0.24 and have noticed an intermittent
problem that is rather weird. After the JVM has been running for a
few days, we some times see the case where HTTP requests for certain
files return a blank HTML page such as:
This seems to happen mostly with welcome files (index.html), and we
see behavior such as:
Mostly welcome files or always?
Is there any kind of exception in the log file?
When it happens, it seems to affect a lot of pages at once, but
only on the one JVM.
Is there any pattern to the pages affected? Is this always cacheable
pages or some cacheable and some non-cacheable?
-- Scott
Restarting that JVM immediately fixes the problem… at least for a
few days.
Our welcome file list (in app-default.xml) looks normal:
welcome-file-list
welcome-fileindex.html/welcome-file
welcome-fileindex.htm/welcome-file
welcome-fileindex.jsp/welcome-file
welcome-fileindex.php/welcome-file
/welcome-file-list
We are caching pages (in resin.conf):
resin:if test=${isResinProfessional}
cache path=cache memory-size=10M/
/resin:if
I don’t want to turn on full debug logging because this happens in
our production environment but only after the JVM has been running
for several days. I would prefer not to slow down the server for a
long time with the extra logging.
Has anyone else seen anything like this or know what might be
causing it?
Thanks,
Shane
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Blank Welcome Pages
Has anyone else seen anything like this or know what might be causing it? I can't help you but to add weight to this, I have a similar and frequent problem in 3.1.5 GPL which is an issue each time I restart the container. I have a servlet mapped to the root of the Web server - i.e. it is supposed to execute just like a welcome page for: http://www.mydomain.ext/ I can't use the servlet-mapping of / since that's defined in Java EE as the default servlet and will execute for *every* request to an otherwise unmatched URL, which isn't what I want. I just want the servlet to handle requests for the root. The obvious thing in Resin is to add a servlet-mapping with a url-regexp attribute: servlet-mapping url-regexp=^/?$ servlet-name=MyServlet / This worked for a while, until a restart. It then gave a 404 even after several reloads, restarts and a full stop and start. So I changed it to url-regexp=^/index.html$ which again worked, until another restart (weeks later) - I also couldn't then revert back to ^/?$ as the pattern as that still gave 404. Finally I'm left using ^/index.jsp$ as my pattern since that is what's working since the last restart. So definitely something weird going on with those index page mappings. I am using Resin with mod_caucho for an Apache 2 front end. I imagine mod_caucho might be causing the issues with patterns still giving 404s even after a complete restart of Resin? I guess also mod_caucho may be the main culprit in all this, though that's a (far from educated) guess. Charles. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
