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From "Adam Winer" <awi...@gmail.com>
Subject Re: Trinidad jar - "too many open files" Exception
Date Tue, 11 Sep 2007 17:17:25 GMT
Yeah, it was before 1.0.2.  The big problem was calls
to java.net.URLConnection.lastModified() that didn't
close the input stream.  (Bizarrely, an input stream
gets opened on the File just to retrieve lastModified
when you go through java.net.URL, at least for
a typical JAR URLConnection implementation.)

I'm not aware of a second cause for file descriptors
to be created on the impl JAR - or if, perhaps, some
servers have problematic URLConnection implementations
that lead to file descriptor leaks.  So, I could use (a lot of)
help tracking down why there's still a problem here.

BTW, do you have any debug or "check modification"
flags set in web.xml or trinidad-config.xml?

-- Adam


On 9/11/07, Matthias Wessendorf <matzew@apache.org> wrote:
> the commit by Adam, was before we released 1.0.2, as far as I know.
>
> Greetings,
> Matthias
>
> On 9/11/07, Steve <svangasse@googlemail.com> wrote:
> > Hi,
> > Yes I'm using the 1.0.2 release. I've just had a look at the thread you
> > mentioned:
> >
> > http://www.mail-archive.com/users@myfaces.apache.org/msg39055.html
> >
> > So is this fixed in the latest SNAPSHOT?
> >
> > Cheers,
> >
> > Steve
> >
> > Matthias Wessendorf wrote:
> > > Hi,
> > >
> > > we had something, mentioned with a SNAPSHOT of 1.0.2.
> > > Adam fixed something related to this. My guess is, you are using the
> > > release, isn't it ?
> > >
> > > Peter, is this still an issue for you guys ?
> > >
> > > Thanks!
> > > Matthias
> > >
> > > On 9/11/07, Steve <svangasse@googlemail.com> wrote:
> > >
> > >> I've been getting the following exception:
> > >>
> > >> java.net.SocketException: Too many open files
> > >>
> > >> on a Tomcat server running on Linux. I ran lsof - p <tomcat_pid>
to see
> > >> what was going on and it seems that the trinidad jar file is being
> > >> opened far too many times:
> > >>
> > >> .....
> > >> java    3693 tomcat 1004r   REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >> java    3693 tomcat 1005r   REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >> java    3693 tomcat 1006r   REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >> java    3693 tomcat 1007r   REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >> java    3693 tomcat 1008r   REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >> java    3693 tomcat 1009r   REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >>
> > >>
> > >>
> > >> There seem to be around a 1000 file descriptors open for the trinidad
> > >> jar before the exception gets thrown. It's referenced much earlier in
> > >> the list along with other jars:
> > >>
> > >> ...
> > >> java    3693 tomcat  mem    REG        3,5    24432 5360898 /usr/local/tomcat/shared/lib/el-api-1.0.jar
> > >> java    3693 tomcat  mem    REG        3,5  3646899 5359580 /usr/local/tomcat/shared/lib/trinidad-impl-1.0.2.jar
> > >> java    3693 tomcat  mem    REG        3,5  1279296 5360913 /usr/local/tomcat/shared/lib/tomahawk-1.1.3.jar
> > >> ...
> > >>
> > >>
> > >>
> > >> Does anyone know why the trinidad jar would be opened so many times?
> > >>
> > >> Thanks,
> > >>
> > >> Steve
> > >>
> > >>
> > >
> > >
> > >
> >
>
>
> --
> Matthias Wessendorf
>
> further stuff:
> blog: http://matthiaswessendorf.wordpress.com/
> mail: matzew-at-apache-dot-org
>

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