[Qgis-user] GeoPackage deadlocks (Andrea Peri)

[Alessandro Pasotti]

On Fri, Sep 27, 2019 at 9:13 AM Paul Wittle <
paul.wittle at dorsetcouncil.gov.uk> wrote:

> Hi Andrea and Enrico,
>
> Thank you for providing an answer even if it was not what I was hoping to
> hear; it was the conclusion I'd reached myself.
>
> Has this issue been considered given the official move from shapefile to
> geopackage as the default format?
>
> My understanding was that shapefiles could be used over a network and
> whilst multiple people editing was dangerous it did not cause deadlocks.
>
> Combined with the issues relating to MapInfo tab files over a network I've
> got into some hot water over my attempt to get QGIS rolled out in our
> organisation now. I'm going to have to think carefully about my next steps
> as it can be difficult to educate large numbers of staff and the two issues
> mean that people using QGIS incorrectly can cause pretty big issues.
>
> To summarise,
>  - You open a geopackage and save to the network; someone else comes along
> and opens it in their QGIS and everything looks okay until the PCs
> deadlock...ICT help calls and data corruption may occur.
>  - You open a MapInfo tab file from the network and it looks fine (accept
> that it my draw in a user projection). MapInfo user receive errors but this
> is unknown to the QGIS user...ICT help calls result.
>
> Whilst I'm glad the forums have helped to diagnose both behaviours I would
> personally say that the issues pose a bit of a threat to software adoption
> by larger companies and institutions that may be using Windows networks and
> potentially migrating from MapInfo.
>
> In both cases my gut feel is that the best solution might be to look into
> use detection. If GDAL (I assume) can be improved to detect that either
> file type is already open then it might be possible to simply ban a second
> user from opening the file at the same time. This might frustrate some
> users but most importantly it would make the application safer from an ICT
> perspective.
>
> These are of course just my personal opinion from my particular use case
> so please don't be offended by them if you disagree but I'd be really happy
> to hear how others are approaching the issues and/or opposing views?
>
> Many thanks,
> Paul



Hi Paul,

A deadlock is a QGIS bug (and quite a serious one).

Can you please file an issue on https://github.com/qgis/QGIS/issues ?
Please check if it's not there, and if it is, you can add your comments to
the existing issue.

Thanks

-- 
Alessandro Pasotti
w3:   www.itopen.it
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