[thredds] ncWMS GetCapabilities return sometimes empty document

• To: thredds@xxxxxxxxxxxxxxxx
• Subject: [thredds] ncWMS GetCapabilities return sometimes empty document
• From: Heiko Klein <Heiko.Klein@xxxxxx>
• Date: Mon, 15 Feb 2010 18:34:33 +0100

Hi,

after running ncWMS on Thredds 4.1.3 (linux) for a while, the
GetCapabilites document is sometimes empty, i.e.

$ GET
'http://dev-vm188/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities'|wc
   6065    3509  155870
$ GET
'http://dev-vm188/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities'|wc
   6065    3509  155870
$ GET
'http://dev-vm188/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities'|wc
      2       1       5
$ GET
'http://dev-vm188/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities'|wc
      2       1       5
$ GET
'http://dev-vm188/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities'|wc
      2       1       5
$ GET
'http://dev-vm188/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities'|wc
   6065    3509  155870


This happened at approx 17:01. The access.log file shows:

157.249.26.172 - - [15/Feb/2010:17:01:00 +0000] "GET
/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities
HTTP/1.1" 200 - "-" "lwp-request/2.08"
157.249.26.172 - - [15/Feb/2010:17:01:01 +0000] "GET
/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities
HTTP/1.1" 200 - "-" "lwp-request/2.08"
157.249.26.172 - - [15/Feb/2010:17:01:01 +0000] "GET
/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities
HTTP/1.1" 200 - "-" "lwp-request/2.08"
157.249.26.172 - - [15/Feb/2010:17:01:06 +0000] "GET
/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities
HTTP/1.1" 200 155870 "-" "lwp-request/2.08"
157.249.26.172 - - [15/Feb/2010:17:01:08 +0000] "GET
/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities
HTTP/1.1" 200 155870 "-" "lwp-request/2.08"
157.249.26.172 - - [15/Feb/2010:17:01:08 +0000] "GET
/thredds/wms/osisaf/met.no/ice/ice_conc_nh_200911291200_CF.nc?service=WMS&version=1.3.0&request=GetCapabilities
HTTP/1.1" 200 - "-" "lwp-request/2.08"


The catalina.out file says very often:
Feb 15, 2010 5:00:00 PM org.apache.jasper.runtime.JspFactoryImpl
internalGetPage
Context
SEVERE: Exception initializing page context
java.lang.IllegalStateException: Cannot create a session after the
response has
been committed
        at
org.apache.catalina.connector.Request.doGetSession(Request.java:2313)
        at
org.apache.catalina.connector.Request.getSession(Request.java:2074)
        at
org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.
java:833)
...

There is another NullPointerException during startup:
Feb 15, 2010 4:01:32 PM org.geotools.util.WeakCollectionCleaner remove
WARNING: NullPointerException
java.lang.NullPointerException
        at
org.geotools.referencing.cs.DefaultCoordinateSystemAxis.hashCode(Defa
ultCoordinateSystemAxis.java:1250)
        at
org.geotools.referencing.cs.AbstractCS.hashCode(AbstractCS.java:642)
        at
org.geotools.referencing.crs.AbstractCRS.hashCode(AbstractCRS.java:17
8)

which might be due to 'jai' installation, which ncWMS complained about
previously.

I'm attaching the log-files.



Best regards,

Heiko

Attachment: localhost_access_log.2010-02-15.txt.gz
Description: GNU Zip compressed data

Attachment: catalina.out.gz
Description: GNU Zip compressed data

• Follow-Ups:
  • Re: [thredds] ncWMS GetCapabilities return sometimes empty document
    • From: Ethan Davis