----------------------------------------------------------------
BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
WHEN YOU POST, include all relevant version numbers, log files,
and configuration files. Don't make us guess your problem!!!
----------------------------------------------------------------
I did a buncha searching on this during my two days of sweat and tears, and it looked
like roughly 1/2 of the advice (mostly in Deja) was "use native threads -- green
threads don't work" and 1/2 of the advice was "use green threads -- native threads
don't work". I couldn't see a strong correlation between the advice and the JDK
version. Mystified, I wished for someone to tell me *why* the problem was occurring,
and also wished for some better error messages. Chris, can you shed some light? Also,
how do you 'set threads to green (or to native)'?
At 11:58 PM 6/21/00 +0950, you wrote:
>----------------------------------------------------------------
>BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
>WHEN YOU POST, include all relevant version numbers, log files,
>and configuration files. Don't make us guess your problem!!!
>----------------------------------------------------------------
>
>This may be off base, but worth a thought.
>
>When I was using JServ on SuSE Linux running Blackdown 1.1.8 (as I
>remember) , JServ segfaulted often.
>
>After a lot of sweat and tears.. and when I had nearly no hair left , I
>tracked it down to a bug that is more noted for using Blackdown 1.2.2 on
>RedHat. You have to set threads to green.
>
>I don't know if this is what is causing you guys the problem, but maybe it
>is of some use to you.
>
>Good luck!
>
>Chris
>
>On Wed, 21 Jun 2000 16:06:17 +0200, [EMAIL PROTECTED] wrote:
>
> >----------------------------------------------------------------
> >BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> >WHEN YOU POST, include all relevant version numbers, log files,
> >and configuration files. Don't make us guess your problem!!!
> >----------------------------------------------------------------
> >
> >
> >I have:
> >
> > Linux Mandrake 6.0 (kernel 2.2.9)
> > Apache-1.3.12
> > ApacheJServ-1.1.1
> > JSDK-2.0
> > JDK-1.1.8
> >
> >I find a similar problem while accessing
> >http://localhost/servlets/IsItworking
> >
> >jserv.log says:
> ><jservException> AJP Protocol Error: java.io.IOException: Stream broken
> >
> >error_log says:
> >child pid nnnn exit signal Segmentation fault (11)
> >
> >Meanwhile, mod_jserv.log doesn't hear what is happening:
> >(INFO) Apache-JServ 1rst initialization: JVM will be started later 1 1364 1363
> >(INFO) Apache Module was cleaned-up
> >(INFO) Apache-JServ 2nd initialization starting JVM now: 1 1365 1
> >(INFO) wrapper classpath:
> >/usr/lib/apache/ApacheJServ.jar:/home/httpd/classes/servlet-2.0.jar:/usr/lib/cla
> >sses/jsdk.jar
> >(INFO) wrapper: Java VM spawned (PID=1378, PPID=1366)
> >(INFO) Apache Module was cleaned-up
> >(INFO) Wrapper: Shutting down JServ (PID=1366) (sig 15)
> >(INFO) wrapper: Terminating JServ (PID=1366, VM PID=1378)
> >(INFO) ajp12: sending shutdown signal
> >
> >What can I try? Where should I read? Do you have any clue?
> >
> >Lorenzo
> >
> >
> >
> >______________________________ Reply Separator _________________________________
> >Subject: Re: Jserv seg. fault
> >Author: dawalt ([EMAIL PROTECTED]) at internet
> >Date: 21/06/2000 14:35
> >
> >
> >
> >Yes I found it, the README in the JSDK 2.0 says that with JDK 1.2 the servlet
> >API is bundled with the JDK 1.2. This isn't true is it? Am I messing things
> >up by pointing the classpath to another JAR? Couldn't get the IsItWorking to
> >compile otherwise...
> >
> >
> >----- Original Message -----
> >From: "Don Awalt" <[EMAIL PROTECTED]>
> >To: "Java Apache Users" <[EMAIL PROTECTED]>
> >Sent: Wednesday, June 21, 2000 8:06 AM
> >Subject: Re: Jserv seg. fault
> >
> >
> >>
> >> Thanks for the feedback!
> >>
> >> I am confused about one thing, maybe someone can answer - does Sun's J2SE
> >> JDK 1.2.2 contain the servlet API? It does not appear to (although in the
> >> documentation for J2SDK or JServ I believe it says it is included in the
> >> JDK!), I have it explicitly pointed to by my wrapper.classpath entry. Is
> >> this correct?
> >>
> >>
> >>
> >> ----- Original Message -----
> >> From: "Michael Deck" <[EMAIL PROTECTED]>
> >> To: "Java Apache Users" <[EMAIL PROTECTED]>
> >> Sent: Tuesday, June 20, 2000 6:10 PM
> >> Subject: Re: Jserv seg. fault
> >>
> >>
> >> >
> >> > Don, I had this problem too, and it drove me nuts for the last two days.
> >> Turned out that all my servlets stopped working when I upgraded to
> >JDK1.2.2
> >> but I didn't know it because nobody reported the problem. I backed off to
> >> Blackdown 1.1.8 and they started working. Maybe this fact was in the faq
> >> somewhere; there was a bunch of material about what compilers are
> >supported
> >> that I struggled through without fully understanding.
> >> >
> >> > The other piece of wisdom which *is* in the faq, is to be sure that
> >rt.jar
> >> is in wrapper.classpath. Without that, you wont get the SIGSEGV but you
> >will
> >> get an EMERGENCY.
> >> >
> >> > -Mike
> >> >
> >> > At 05:48 PM 6/20/00 -0400, you wrote:
> >> > >----------------------------------------------------------------
> >> > >BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> >> > >WHEN YOU POST, include all relevant version numbers, log files,
> >> > >and configuration files. Don't make us guess your problem!!!
> >> > >----------------------------------------------------------------
> >> > >
> >> > >I am at my wits end getting JServer to run right:
> >> > >
> >> > >Config:
> >> > >==========
> >> > >
> >> > >Mandrake 7.1
> >> > >kernel 2.2.15
> >> > >Apache 1.3.12
> >> > >JServ 1.1.1-1
> >> > >glibc 2.1.3
> >> > >J2SE jdk 1.2.2 (Sun)
> >> > >450 MHz dual CPU
> >> > >
> >> > >Problem
> >> > >========
> >> > >I install JServ after verifying Apache is running fine, and I get a
> >> > >segmentation fault trying to run "IsItWorking" servlet.
> >> > >No other messages or logs identifying a potential problem.
> >> > >
> >> > >
> >> > >Things I have tried/verified:
> >> > >===================
> >> > >1. java is installed properly - I can compile and run programs
> >> > >2. I can recompile IsItWorking.java without problems (JDSK 2.0 is in
> >J2SE
> >> > >jdk 1.2.2 I believe)
> >> > >3. I can install JSDK 2.0 explicitly on the machine, and ServletRunner
> >> > >listening on port 8080 runs IsItWorking and other servlets fine
> >> > >4. Tried mucking around with wrapper.classpath to add all the .jar
> >files
> >> > >explicitly (do not install that way by default, I installed JServ
> >through
> >> an
> >> > >RPM file which appears to configure everything ok)
> >> > >5. Validated jserv.properties file with FAQs, emails from people, etc.
> >> > >6. Checked gary meyer's HOWTO (which shows it to be incredibly straight
> >> > >forward to get this working, which leaves me clueless!)
> >> > >
> >> > >I have done a lot more that I can't think of now. To me it seems like
> >> some
> >> > >sort of incompatibility (jsdk and jdk? Jserv 1.1.1-1 and Apache or
> >> kernel?)
> >> > >
> >> > >Any help, or advice how to track down would be GREATLY appreciated!
> >> > >
> >> > >
> >> > >
Michael Deck
Cleanroom Software Engineering, Inc.
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