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/
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