Strange mapscriptJNI_delete_1layerObj+0xf error killing Tomcat

[Umberto Nicoletti]

On 6/1/07, Oliver Wesp <wesp at gdv.com> wrote:
> Hi everybody,
>
> I just want thank everybody for the information in this thread. We're
> facing similar issues with java mapscript crashing the vm. Unfortunately
>   the application relies on the dynamic creation of layers and classes.
>
> I tried the svn version this afternoon and it seems to be stable. No
> more tomcat crashes till now. I will do some more testing on monday but
> it looks like Umberto was right with expecting some good news :-)

Yes, party time! ;-)

Umberto

>
> Just in case this information is usefull: We're running our application
> on Solaris 8 using Shapefiles, GDAL Raster (HFA) and WMS as datasources.
> Tomcat is  5.0.28, JAVA is j2sdk1.4.2_11.
>
> Regards,
> Oliver
>
>
>
> Umberto Nicoletti schrieb:
> > I suggest against this practice (no pun intended Benedikt, I sincerely
> > appreciate your help).
> > I say let's wait until Rodrigo tries out a rfc-24 enabled build,
> > frankly I am quite positive rfc-24 will fix his issues.
> >
> > Regards,
> > Umberto
> >
> > On 6/1/07, Benedikt Rothe <umn-ms at hydrotec.de> wrote:
> >>
> >> Hi
> >>
> >> Some developers (Umberto, Tamas) work on a solution of this problem.
> >>
> >> As a workaround I made good experiences with
> >> http://lists.umn.edu/cgi-bin/wa?A2=ind0506&L=mapserver-users&P=87500
> >>
> >> > if we dynamically create mapserver-objects, we allway use code like
> >> this:
> >>  > classObj cO = new classObj(...);
> >>  > ..
> >>  > // Do something with cO
> >>  > ..
> >>  > //now cO isn't used any more
> >>  > cO.delete()
> >>
> >> With "freeing manually" we made the Mapserver inside Tomcat quite stable.
> >> Hope, this helps
> >> Benedikt
> >>
> >>
> >> UMN MapServer Users List <MAPSERVER-USERS at LISTS.UMN.EDU> schrieb am
> >> 31.05.2007 15:13:41:
> >>
> >>  >
> >>  >     Hello dear list.
> >>  >
> >>  >    A problem is happening in our production machine which we were
> >>  > unable to reproduce on our development machines. We have a very
> >>  > large application almost ready for deployment, in which one of the
> >>  > modules is written in java mapscript 4.10.1,  and the error on the
> >>  > attached log happened for the first time when we installed the
> >>  > application on the production server. Whats worse, the GIS module
> >>  > causing the error brings down Tomcat and the whole application with
> >> it.
> >>  >     This is a excerpt from the JVM log:
> >>  >
> >>  > # An unexpected error has been detected by HotSpot Virtual Machine:
> >>  > #
> >>  > #  SIGSEGV (0xb) at pc=0x636ff93b, pid=19162, tid=1759710128
> >>  > #
> >>  > # Java VM: Java HotSpot(TM) Server VM (1.5.0_07-b03 mixed mode)
> >>  > # Problematic frame:
> >>  > # C  [libmapscript.so+0x3893b]
> >>  >
> >> Java_edu_umn_gis_mapscript_mapscriptJNI_delete_1layerObj+0xf
> >>  > #
> >>  >
> >>
> >
> >
> >
>
> --
> Dipl.-Geogr. Oliver Wesp
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