Apologize some other missing informations: 1. Workspace 'gsoc' is isolated and the request has the workspace in the path too ( /gsoc/wms?...layers=gsoc:layername) 2. Layer is a normal geotiff layer but it has been treated as layergroup? -> https://github.com/geoserver/geoserver/blob/2.17.2/src/gwc/src/main/java/org/geoserver/gwc/layer/CatalogConfiguration.java#L255
3. 100% sure that the issue is not related to management of the geoserver instances from GCP since we have only 2 instances I've checked that no action has been performed during the test. C. Il giorno gio 30 lug 2020 alle ore 15:27 carlo cancellieri < geo.ccancelli...@gmail.com> ha scritto: > Dear List, > Overview: > I'm using geoserver 2.17.2 and I've just upgraded the environment from a > previous installation having 2.17.0 and a single instance to a new managed > instance group (autoscaled number of instances) with a shared High > performance disk NFS (provided by GCP). > We know that having the cache shared on an NFS it's **not the best** but > we would like to keep maintenance/costs/etc low so we're also sharing > GWC_CACHE_DIR over the same NFS volume (with embedded GWC). > We're also redirecting the traffic by source IP to redirect the same user > to a single geoserver where controlflow has been properly configured (lower > throughput but better control of the thresholds). > Now I'm performing JMeter stress tests and Manual tests to see the > throughput and the collisions on GWC miss and it performs not bad at all. > > Problem: > - Using layer preview I'm obtaining something that I've never seen before: > https://pasteboard.co/Jk38oZB.png > - Not reproducible, it's random!!! > - StackTrace is attached > > Questions: > - I'm wondering if the update to Geoserver 2.17.2 from 2.17.0 has modified > something on that side? (looking at the commits I can't see > anithing recent) > https://github.com/geoserver/geoserver/blob/cf77a0baef45eeb866c622bbbccf917bc5eb28d0/src/gwc/src/main/java/org/geoserver/gwc/layer/CatalogConfiguration.java#L253 > - Can the NFS filesystem influence this? (don't think so...) > - can be related to https://github.com/GeoWebCache/geowebcache/issues/688 > > Thanks for any hint, > Regards, > C. > > > -- > Mr. Carlo Cancellieri > *skype*: ccancellieri > *Twitter*: @cancellieric > *LinkedIn*: http://it.linkedin.com/in/ccancellieri/ > -- Mr. Carlo Cancellieri *skype*: ccancellieri *Twitter*: @cancellieric *LinkedIn*: http://it.linkedin.com/in/ccancellieri/
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