[Geoserver-devel] [JIRA] (GEOS-9622) NullPointerException when using WMS vendor parameter "CLIP" on an ImageMosaic based layer

_Failed_to_Retrieve · May 15, 2020, 12:59pm

Michael Bauer created an issue

NullPointerException when using WMS vendor parameter “CLIP” on an ImageMosaic based layer

Issue Type:	Bug
Affects Versions:	2.17.0
Assignee:	Unassigned
Attachments:	Geoserver_ImageMosaik_NPE.log
Components:	image mosaic, WMS
Created:	15/May/20 2:59 PM
Environment:	Geoserver 2.17.0 (.war file), Java 11 (AdoptOpenJDK), Tomcat 8.5.38, Windows 11 (same behaviour on Linux 18.0.4)
Priority:	Medium
Reporter:	Michael Bauer

Hi Geoserver Team,

I’m referring to my user list post (https://sourceforge.net/p/geoserver/mailman/message/37004708/).
I was also able to reproduce the NPE with the provided sample data and configuration in the Geoserver data directory so I think it is a bug in the current version 2.17.0 of Geoserver and I would like to report it to you. (If it is no bug I’m sorry for bothering you)

How to reproduce the NullPointerException:

Make a WMS request on the pre-configured layer ‘nurc:mosaic’
e.g. http://localhost/geoserver/nurc/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&FORMAT=image%2Fjpeg&TRANSPARENT=true&LAYERS=nurc%3Amosaic&exceptions=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A4326&STYLES=&WIDTH=768&HEIGHT=535&BBOX=10.4974365234375%2C40.34454345703125%2C14.7161865234375%2C43.28338623046875
Make a WMS request and use the vendor parameter ‘clip’.
e.g. http://localhost/geoserver/nurc/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&FORMAT=image%2Fjpeg&TRANSPARENT=true&LAYERS=nurc%3Amosaic&exceptions=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A4326&STYLES=&WIDTH=768&HEIGHT=535&BBOX=10.4974365234375%2C40.34454345703125%2C14.7161865234375%2C43.28338623046875&CLIP=POLYGON((12.356196%2042.001153,12.674799%2042.001153,12.674799%2041.788528,12.356196%2041.788528,12.356196%2042.001153
Make a second WMS request (e.g. press F5). Here the NPE occurs.

Further descripton:

The first WMS request with ‘clip’ parameter works as expected
The second request causes the NPE (see attachment)
After the second request it is not possible anymore to request the layer, you have to restart the Tomcat server or reload the data dir cofiguration.
It makes no difference if I use a Shapefile or database configuration for the datastore

Best regards

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