Music app crashes with unsupported schema version with latest v0.105+15.04.20150127-0ubuntu1 on Vivid

[Victor Thompson]

The music app is crashing on the latest vivid images. The following error is seen on console prior to the crash in image #80 for mako and #79 for flo--both of which update mediascanner2 to version 0.105+15.04.20150127-0ubuntu1.

terminate called after throwing an instance of 'std::runtime_error'
  what(): Tried to open a db with an unsupported schema version.

Was the something not updated? It seems like the daemon is the same schema version (8), but the plugin does not support this version.

[Jussi Pakkanen (jpakkane)]

Thank you for noticing this. I can replicate and am investigating.

[Launchpad Janitor (janitor)]

This bug was fixed in the package mediascanner2 - 0.105+15.04.20150127.is.0.105+15.04.20150122-0ubuntu1

---------------
mediascanner2 (0.105+15.04.20150127.is.0.105+15.04.20150122-0ubuntu1) vivid; urgency=medium

  * Revert mediascanner2 to the previous working version as the newest
    upload broke the music-app (LP: #1415318)
 -- Lukasz 'sil2100' Zemczak <email address hidden> Wed, 28 Jan 2015 14:00:55 +0100

[Leo Arias (elopio)]

This needs a test, right?
How can we check that a new release of media scanner won't break the apps that depend on it?

[Victor Thompson (vthompson)]

Leo, this is a great point. If such a thing could be made testable it'd be very appreciated by our team. I don't think it'd require much more than exercising a minimal AP test to load the models that ms2 retains (maybe a unit test?). We'd really appreciate it in the future. Currently we're pretty good at catching regressions, but I'd rather automate testing--since it really is not our responsibility.

[Ken VanDine (ken-vandine)]

This is still broken for me, with mediascanner2=0.105+15.04.20150128-0ubuntu1

[Ken VanDine (ken-vandine)]

OK, I was able to work around it by moving .cache/mediascanner-2.0 out of the way and restarting. We really need this to be more resilient to keep users from getting in this situation without the need to enable developer mode.

[Andrew Hayzen (ahayzen)]

@Leo, can we not just run the music-app AP tests each time ms2 changes? or as Victor said create a mini app that has all of the models we use (maybe we could write a small set of QML Unit tests todo this) ?