On Tue, Oct 20, 2015 at 6:10 PM, Chris Brown <[email protected]> wrote:
> Hi, > > We've just installed JDBCConfig on a large GeoServer deployment with about > 40,000 layers. The install web smoothly but we're seeing some very strange > behaviour when we do any updates such as adding layers via the REST API. > > All such requests hang the server for around 25 minutes. Turning on the > debugging log, it looks like some process is looping over every single > layer in the catalog. The output in the log looks like this: > > If anyone has any ideas about what we may have done wrong or any ideas > what might be causing this it would be hugely appreciated. The closest > thing I could find to this issue was this: > http://comments.gmane.org/gmane.comp.gis.geoserver.user/41076 > You're not doing anything wrong, it's just that the core of GeoServer still has many bits of code that are written with an in memory catalog in mind, JDBCConfig work included some _examples_ spread out in the code base that serve as examples of how things should be done to work against a in dbms catalog, but the migration is not complete, there are still bits of code here and there that load everything there is to perform some in memory check, that could be replaced with a well written query loading only the bits that are actually needed. One year ago we worked on fixing the biggest offenders in the UI and some core modules, leaving out the integrated GWC as the biggest outstanding offender. Guess what, I'm working on a patch to address some of the issues right now, which might or might not address what you're seeing, it should be landing on the development series next week. I'm not saying this will remove all "linear scans" that are in the codebase, but it should help in some cases. Let me know if you're interested in testing that out, if so I'll ping you when I commit it. Cheers Andrea -- == GeoServer Professional Services from the experts! Visit http://goo.gl/it488V for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions S.A.S. Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003* Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003. The information in this message and/or attachments, is intended solely for the attention and use of the named addressee(s) and may be confidential or proprietary in nature or covered by the provisions of privacy act (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection Code).Any use not in accord with its purpose, any disclosure, reproduction, copying, distribution, or either dissemination, either whole or partial, is strictly forbidden except previous formal approval of the named addressee(s). If you are not the intended recipient, please contact immediately the sender by telephone, fax or e-mail and delete the information in this message that has been received in error. The sender does not give any warranty or accept liability as the content, accuracy or completeness of sent messages and accepts no responsibility for changes made after they were sent or for other risks which arise as a result of e-mail transmission, viruses, etc. -------------------------------------------------------
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