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[Aaron Wells <1455122@xxxxxxxxxxxxxxxxxx>]

Confirmed. This does not happen when upgrading from 1.9 -> 1.10. It
appears that it's due to the blocktype category code that we added in
15.04 to store block sortorders.

While we don't yet support fully uninstalling plugins (that's bug
505732), Mahara shouldn't crash like this if you've just deleted the
plugin.

Another possible workaround to those listed above, would be to put in a
"dummy" placeholder plugin with no functionality, but with the same name
as the expected plugin. But I'm going to try to get this bug fixed for
15.04.1.

Cheers,
Aaron

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https://bugs.launchpad.net/bugs/1455122

Title:
  Upgrade form 1.10 to 15.04 fails if 3rd party plugins are not present

Status in Mahara ePortfolio:
  Confirmed
Status in Mahara 15.04 series:
  Confirmed
Status in Mahara 15.10 series:
  Confirmed

Bug description:
  When upgrading from 1.10 (latest build) to 15.04 (latest build) today
  I get the following error because some 3rd party plugins are not
  present on my server but, due to the lack on auto-unstallation, their
  traces remain in the database.

  If I run again the command later I get the second error message (see
  below).

  The upgrade process should be resilient when 3rd party plugins are not
  here. I think we already had this with previous versions of Mahara and
  it has been fixed. My only way to upgrade to 15.04 is either :

  1/ Find all the bit of information related to the missing plugins and delete them from the database
  or
  2/ Reinstall everything from scratch loosing all the data from the Groups (no option to export group work in Leap2a)
  or
  3/ Reinstall the missing plugins. I already tried this solution without success; some plugins are so old and unmaintaned that they crash the server when re-introduced inside Mahara.

  
  ---- Message I got after the first attempt for upgrading the system 

  root@ubuntu:/var/www/html/mahara/htdocs# php admin/cli/upgrade.php
  [INF] 61 (admin/cli/upgrade.php:49) Mise à jour de Mahara
  [INF] 61 (lib/mahara.php:221) Mise à jour de core
  [WAR] 61 (lib/mahara.php:1429) File /var/www/html/mahara/htdocs/blocktype/chemnih/lib.php did not exist
  Call stack (most recent first):
    * safe_require("blocktype", "chemnih") at /var/www/html/mahara/htdocs/lib/upgrade.php:1128
    * install_blocktype_categories_for_plugin("chemnih") at /var/www/html/mahara/htdocs/lib/db/upgrade.php:3974
    * xmldb_core_upgrade("2014092314") at /var/www/html/mahara/htdocs/lib/upgrade.php:359
    * upgrade_core(object(stdClass)) at /var/www/html/mahara/htdocs/lib/mahara.php:253
    * upgrade_mahara(array(size 40)) at /var/www/html/mahara/htdocs/admin/cli/upgrade.php:50

  A nonrecoverable error occurred. This probably means you have
  encountered a bug in the
  systemroot@ubuntu:/var/www/html/mahara/htdocs# git pull

  ------- Message I got after my second attempt
  root@ubuntu:/var/www/html/mahara/htdocs# php admin/cli/upgrade.php
  [INF] 87 (admin/cli/upgrade.php:49) Mise à jour de Mahara
  [INF] 87 (lib/mahara.php:221) Mise à jour de core
  [WAR] 87 (lib/errors.php:747) Failed to get a recordset: mysqli error: [1062: Duplicate entry 'shortcut' for key 'PRIMARY'] in adodb_throw(INSERT INTO "blocktype_category" ("name", "sort") VALUES ('shortcut', '0'), )
  [WAR] 87 (lib/errors.php:747) Command was: INSERT INTO "blocktype_category" ("name", "sort") VALUES (?, ?) and values was (shortcut,0)
  Call stack (most recent first):
    * log_message("Failed to get a recordset: mysqli error: [1062: Du...", 8, true, true) at /var/www/html/mahara/htdocs/lib/errors.php:97
    * log_warn("Failed to get a recordset: mysqli error: [1062: Du...") at /var/www/html/mahara/htdocs/lib/errors.php:747
    * SQLException->__construct("Failed to get a recordset: mysqli error: [1062: Du...") at /var/www/html/mahara/htdocs/lib/dml.php:1054
    * insert_record("blocktype_category", object(stdClass)) at /var/www/html/mahara/htdocs/lib/db/upgrade.php:3856
    * xmldb_core_upgrade("2014092314") at /var/www/html/mahara/htdocs/lib/upgrade.php:359
    * upgrade_core(object(stdClass)) at /var/www/html/mahara/htdocs/lib/mahara.php:253
    * upgrade_mahara(array(size 40)) at /var/www/html/mahara/htdocs/admin/cli/upgrade.php:50

  [WAR] 87 (lib/dml.php:1054) Failed to get a recordset: mysqli error: [1062: Duplicate entry 'shortcut' for key 'PRIMARY'] in adodb_throw(INSERT INTO "blocktype_category" ("name", "sort") VALUES ('shortcut', '0'), )
  [WAR] 87 (lib/dml.php:1054) Command was: INSERT INTO "blocktype_category" ("name", "sort") VALUES (?, ?) and values was (shortcut,0)
  Call stack (most recent first):
    * insert_record("blocktype_category", object(stdClass)) at /var/www/html/mahara/htdocs/lib/db/upgrade.php:3856
    * xmldb_core_upgrade("2014092314") at /var/www/html/mahara/htdocs/lib/upgrade.php:359
    * upgrade_core(object(stdClass)) at /var/www/html/mahara/htdocs/lib/mahara.php:253
    * upgrade_mahara(array(size 40)) at /var/www/html/mahara/htdocs/admin/cli/upgrade.php:50

  A nonrecoverable error occurred. This probably means you have
  encountered a bug in the
  systemroot@ubuntu:/var/www/html/mahara/htdocs#

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