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From Larry Isaacs <Larry.Isa...@sas.com>
Subject RE: Error ajp13_process_callback - write failed
Date Tue, 06 Nov 2001 21:30:41 GMT
I think you need to do you own "closing".  Garbage collection
probably wouldn't do much before you got errors.  Its not clear
if an unexpected exception like "too many files..." would lead
to the "write failed" error, but I think it is possible.  See
what happens after eliminating the "too many files..." error.

Larry

> -----Original Message-----
> From: Chris Gokey [mailto:cgokey@gcmd.gsfc.nasa.gov]
> Sent: Tuesday, November 06, 2001 3:48 PM
> To: Tomcat Users List
> Subject: Re: Error ajp13_process_callback - write failed
> 
> 
> This time Tomcat crashed, I received some errors...  Is it 
> possible to 
> receive this kind of error in mod_jk.log if Tomcat can't open up any 
> more files?
> 
>  >>> [Mon Nov 05 06:41:41 2001]  [jk_ajp13_worker.c (381)]: Error
>  >>> ajp13_process_callback - write failed
>  >>> [Mon Nov 05 06:41:58 2001]  [jk_ajp13_worker.c (381)]: Error
>  >>> ajp13_process_callback - write failed
>  >>> [Mon Nov 05 07:19:23 2001]  [jk_ajp13_worker.c (381)]: Error
>  >>> ajp13_process_callback - write failed
> 
> Tomcat would just hang and not serve any more requests.  I couldn't 
> connect to it directly either via port 8080.
> 
> Looking through the logs, this time I noticed I'm getting "too many 
> files open" error in my application, so I carefully went through and 
> found some instances where files where being opened but not 
> closed.  How 
> does Java work, if you exit a method will it automatically close the 
> file, or does it wait for the garbage collector to do this?  I found 
> some instances where some servlets didn't explicitly close the 
> java.io.Writer from the HttpServletResponse class.
> 
> I suppose maybe my application is eating up all the available file 
> pointers in memory and tomcat just hung trying to open a 
> file?  Is this 
> a plausible theory?
> 
> Chris
> 
> 
> Chris Gokey wrote:
> 
> > I didn't try that.   So far it has been alive all day, so 
> if it crashes 
> > again, I'll let you know.  Any other logs that might help 
> tell why it is 
> >  crashing?  I don't see much in any of the other logs.  Is 
> there a way 
> > to increase the verbosity of the logs?
> > 
> > Chris
> > 
> > Larry Isaacs wrote:
> > 
> >> This error occurs when mod_jk tries to write the response back
> >> to the browser.  I'm not sure if it is the Ajp13 equivalent
> >> of the "Connection reset by peer" exception when the user clicks
> >> the stop button.
> >>
> >> Does Tomcat still respond after the hang when accessed directly?
> >>
> >> Larry
> >>
> >>
> >>> -----Original Message-----
> >>> From: Chris Gokey [mailto:cgokey@gcmd.gsfc.nasa.gov]
> >>> Sent: Monday, November 05, 2001 6:55 PM
> >>> To: Tomcat Users List
> >>> Subject: Error ajp13_process_callback - write failed
> >>>
> >>>
> >>> Hi,
> >>>
> >>> I've installed Tomcat 3.3 and using mod_jk under Solaris 
> 7.  Tomcat 
> >>> hung on me twice recently and noticed this error in the 
> mod_jk.log 
> >>> before it crashed today.
> >>>
> >>> [Mon Nov 05 06:41:41 2001]  [jk_ajp13_worker.c (381)]: Error 
> >>> ajp13_process_callback - write failed
> >>> [Mon Nov 05 06:41:58 2001]  [jk_ajp13_worker.c (381)]: Error 
> >>> ajp13_process_callback - write failed
> >>> [Mon Nov 05 07:19:23 2001]  [jk_ajp13_worker.c (381)]: Error 
> >>> ajp13_process_callback - write failed
> >>>
> >>> Does anyone know what would cause this error?  Also, I don't see 
> >>> anything else in the other logs, for that matter that 
> would give me a 
> >>> clue.
> >>>
> >>> Thanks,
> >>> Chris
> >>>
> >>>
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> > 
> > 
> > 
> > 
> 
> 
> 
> 
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