On Fri, Jul 21, 2017 at 3:23 PM, Bartek Burkot <pomiarowie...@poczta.onet.pl
> wrote:
> Hi geoserver users
> I have a backend service which is producing REST api requests to geoserver
> in order to register many new layers.
> Sometimes - lets say once a week - the geoserver REST request is finishing
> with timeout. There are no messages in log file of geoserver and of tomcat.
> There are also no new requests registered in tomcat access log.
> In the Server Status page http://mytomcat/manager/status I see the
> processing requests hanging since many hours and queuing new REST requests
> one by one.
> Any ideas how to investigate?
>
> In the backend service there are independent, parallel threads producing
> REST requests. Could it be the "global configuration lock" described here:
> https://sourceforge.net/p/geoserver/mailman/message/32457136/ ?
>
Yes, the global lock is required in all stable series to avoid the
configuration turning down into an unreadable soup,
since the catalog subsystem is not thread safe. So, if you have a REST
request that takes a lot of time (hours?),
or a long sequence that take significant time (e.g., tens of seconds)
you'll effectively lock down both REST
and user interface (unless you're very patient, and wait while and stop
sending requests).
The catalog subsystem in the development series, 2.12.x uses more granular
locks (grabs locks only
when actually writing on the configuration, now while uploading files or
computing bboxes), are you
interested in trying it? You'd likely be the first, I'm curious to hear
some feedback on that work :-)
If so, you can pick a nightly build here:
http://ares.boundlessgeo.com/geoserver/master/
> Could it be visible in jvm stack from jstack tool?
>
Yes, you should at least see what's keeping things stuck.
Cheers
Andrea
--
Regards,
Andrea Aime
==
GeoServer Professional Services from the experts! Visit http://goo.gl/it488V
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==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via di Montramito 3/A
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phone: +39 0584 962313
fax: +39 0584 1660272
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