[{reqId}] {exception_url} RuntimeException: User ID mismatch~10 people per day. Probably breaks autologin attempt and next autologin will succeed, so minimal.
This is some variant of T380500: CentralAuthUser returning outdated data after user creation.
Only a single instance (logstash). Do we seriously not log the user name/ID when this happens? Ugh.
It's very much not supposed to happen, but without any specifics, can't really investigate.
Change #1125389 had a related patch set uploaded (by D3r1ck01; author: Derick Alangi):
[mediawiki/extensions/CentralAuth@master] Add user IDs that mismatch in the runtime exception
Maybe one of the ids is zero and this is some version of T380500: CentralAuthUser returning outdated data after user creation.
Yes, I highly suspect we're hitting that. But let's find try to prove ourselves with some logging :)
Change #1125389 merged by jenkins-bot:
[mediawiki/extensions/CentralAuth@master] Log and add user IDs that mismatch in the runtime exception
[{reqId}] {exception_url} RuntimeException: User ID mismatchThanks @Reedy, we've added some logging, let's see if we can get more info about this as the patch goes out.
Change #1126051 had a related patch set uploaded (by Gergő Tisza; author: Derick Alangi):
[mediawiki/extensions/CentralAuth@wmf/1.44.0-wmf.19] Log and add user IDs that mismatch in the runtime exception
Change #1126051 merged by jenkins-bot:
[mediawiki/extensions/CentralAuth@wmf/1.44.0-wmf.19] Log and add user IDs that mismatch in the runtime exception
Mentioned in SAL (#wikimedia-operations) [2025-03-10T14:49:53Z] <tgr@deploy2002> tgr: Backport for [[gerrit:1126050|SpecialCentralAutoLogin: Handle nullable wiki ID (T388252)]], [[gerrit:1126049|SUL3: Attach SUL mode to the return URL of local wiki (T388067)]], [[gerrit:1126051|Log and add user IDs that mismatch in the runtime exception (T388177)]] synced to the testservers (https://wikitech.wikimedia.org/wiki/Mwdebug)
Mentioned in SAL (#wikimedia-operations) [2025-03-10T14:58:12Z] <tgr@deploy2002> Finished scap sync-world: Backport for [[gerrit:1126050|SpecialCentralAutoLogin: Handle nullable wiki ID (T388252)]], [[gerrit:1126049|SUL3: Attach SUL mode to the return URL of local wiki (T388067)]], [[gerrit:1126051|Log and add user IDs that mismatch in the runtime exception (T388177)]] (duration: 15m 48s)
Both in practice seem to be against user id 0
[{reqId}] {exception_url} Wikimedia\NormalizedException\NormalizedException: User ID: {centralUserId} mismatch with {storedUserId} for user: {username}[{reqId}] {exception_url} Wikimedia\NormalizedException\NormalizedException: User ID: {centralUserId} mismatch with {storedUserId} for user: {username}30 examples in the last 7 days. The central used ID is always 0 (i.e. this is indeed caused by T380500: CentralAuthUser returning outdated data after user creation).
This always seems to be happening on the local continueAuthentication() call, presumably right after account creation.