Task T47839 (maybe others too) has a "Unknown Object (MLST)" in the CC field, and it can't be removed: attempting results in "Unhandled Exception ("Exception"): Edges are not available for objects of type 'MLST'!"
Description
Description
Related Objects
Related Objects
- Mentioned In
- T44396: duplicate/invalid language codes
- Mentioned Here
- T73461: [hhvm] MemcachedPeclBagOStuff.php: Error at offset 0 of 6 bytes
T184854: hhvm memcached and php7 memcached extensions do not play well together
T11617: Feature: improved 'annotation' method for media (combo of galleries, categories and tags)
T78430: [Epic] Getting Wikidata to render nicely on mobile web
T47839: [Bug] All language links not showing up, manual purge required
Event Timeline
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Interesting. Confirming. Probably some old / disabled / not properly imported (?) mailing list.
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(To report upstream, we need to reproduce it)
(Is there a column for this? I think "Needs discussion" is not the right one)
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"Stalled" status if you really felt some need to express that? However I can reproduce this, hence not sure why this is asked. :)
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https://phabricator.wikimedia.org/api/maniphest.info:
"ccPHIDs": [ "PHID-USER-m4bdywrfl4v6ktpmcig4", "PHID-USER-chrmcih5qjpx5buo7vx6", "PHID-USER-teteh3pfkf4ob5zfobjl", "PHID-USER-wkpnidxoctuhawexig5p", "PHID-USER-tyjmn7xcw6s2b6rqagj7", "PHID-USER-lsveyqlsb4acoowxr5yj", "PHID-USER-6p4p4vbpzsydxbxewmdj", "PHID-USER-sscimmfqgfuh4pe2kfyw", "PHID-USER-4j7xntcqqwei7izzlfnd", "PHID-USER-3cksrzu26qc2llnsir3q", "PHID-USER-sx63fwaih5kjt7bz4u6z", "PHID-USER-mndznmqvm6ihjfmb6xap", "PHID-USER-6cmq4ojqc6ur2o2im57n", "PHID-USER-t7ue4j3fnqznjjs4z5ef", "PHID-USER-xfe43w2lb5gpvglf4coa", "PHID-USER-u6ycqhfpa3k4yvlpxjt2", "PHID-USER-2mey32xhshfnf7rz7jjn", "PHID-USER-3wfzrv2a2ggwauxc52is", "PHID-USER-hgn5uw2jafgjgfvxibhh", "PHID-USER-7sfnmvwpvh3etwtqk5pg", "PHID-USER-cqtipia3tizutncgpwpr", "PHID-USER-zcgjmgl4fagouajd6iym", "PHID-USER-ydl4ek3zzlyuz7f7upgt", "PHID-USER-v7bwpq3rs3zdxegibdbh", "PHID-USER-pxpu4muyuyvybjioj2la", "PHID-USER-lzhljhpbm3qfphvqyill", "PHID-USER-7n5fvppwj4ueprv2iuys", "PHID-USER-6majuboi566q3ozbh27r", "PHID-USER-6imfhxf74rwoqfhxd6h2", "PHID-MLST-fswpxohkpbignkopdasf" ],
- MLST indeed refers to mailing lists, an application that no longer exists (mailing lists have been replaced by users). See e.g. https://secure.phabricator.com/T8455 and https://secure.phabricator.com/D13128.
- https://phabricator.wikimedia.org/api/phid.query does not recognise PHID-MLST-fswpxohkpbignkopdasf.
- https://phabricator.wikimedia.org/api/maniphest.query indicates a large number of Tasks still have PHID-MLST-fswpxohkpbignkopdasf subscribed (approx 2500). The lowest numbered bug is T11617, the highest numbered bug is T78430.
- this specific issue seems related to the @Wikidata-bugs mailing list (the MLST PHID is the old wikidata-bugs PHID -- that doesn't mean there are no other lists with the same issue)
Ah. If you compare @wikibugs-l-list to @Wikidata-bugs, note that the former was created Jun 11 2015, 3:52 AM (45 w, 6 d) and has role Mailing List, whereas the latter was created Nov 25 2014, 12:55 PM (74 w, 23 h) and is linked to a MediaWiki account. I suspect the account existed before the MLST->USER conversion, and the conversion broke because of that.
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Likely a side effect (bug) of https://secure.phabricator.com/T8387 when mailinglists (MLST) got converted into users. The entity PHID-MLST-fswpxohkpbignkopdasf does not exist anymore (was likely the wikidata-bugs mailing list) in our Phab instance but it looks like the corresponding edges were not removed correctly.
To query the IDs of all affected tasks where this element is in the subscribers field (untested!):
SELECT t.id FROM phabricator_maniphest.edge edg JOIN phabricator_maniphest.maniphest_task t WHERE edg.type = 21 AND edg.dst = "PHID-MLST-fswpxohkpbignkopdasf" AND t.phid = edg.src;
Edit: Mid-air collision with Valhallasw when I wrote this comment. :)
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This bug seems to make it impossible to change subscribers of T73461, or to mark it as a duplicate. When I did, it failed half-way through, showing the duplication status on T73461, but not on the target (T184854), with the same error:
Edges are not available for objects of type 'MLST'
I can consistently reproduce the error by trying to remove "Unknown Object (MLST)" from https://phabricator.wikimedia.org/maniphest/task/edit/73461/.
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Someone with Phab DB access please
- replace the broken list value with the existing account https://phabricator.wikimedia.org/p/Wikidata-bugs/ : use phabricator_maniphest; UPDATE edge SET dst="PHID-USER-zcgjmgl4fagouajd6iym" WHERE dst="PHID-MLST-fswpxohkpbignkopdasf" AND src LIKE "PHID-TASK-%";
- or delete these edges: use phabricator_maniphest; DELETE FROM edge WHERE dst="PHID-MLST-fswpxohkpbignkopdasf" AND src LIKE "PHID-TASK-%";
This problem is likely a result of us not following https://secure.phabricator.com/T8398 in 2015.
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@mmodell: Do you think that updating the DB as proposed in my previous comment would be worth a shot, or do you consider that too risky? If worth, who could do that?
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Updating edges didn't work due to duplicate key errors. Should I just delete the edges?
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MariaDB [phabricator_maniphest]> select count(*) from edge where dst LIKE "PHID-MLST-%"; +----------+ | count(*) | +----------+ | 2701 | +----------+ 1 row in set (0.03 sec) MariaDB [phabricator_maniphest]> select count(*) from edge where src LIKE "PHID-MLST-%"; +----------+ | count(*) | +----------+ | 49795 | +----------+ 1 row in set (0.14 sec)
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ok I deleted the destination edges, that should hopefully resolve this specific issue?