Springle added a subscriber: jcrespo.
Herald added a subscriber: Aklapper.
TASK DETAIL
https://phabricator.wikimedia.org/T62539
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To: Springle
Cc: Aklapper, jcrespo, greg, aude, Springle, MZMcBride
Springle added a comment.
Smaller fields are still better for performance, so I vote for a conservative
300, unless 400 is demonstrably needed.
Correct, 767 bytes (bytes, not characters) is the limit for a single InnoDB
index with our current DB config, which is enough, and in any case
Springle closed this task as Resolved.
Springle added a comment.
Done.
Actually, this was fun. Dropping a not-null field across the fleet without
causing replag or explosion needs an unusual approach. Will update wikitech and
the OSC script for this scenario.
TASK DETAIL
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Springle closed blocking task T95179: Deploy schema changes to wbc_entity_usage
table on wikidatawiki as Resolved.
TASK DETAIL
https://phabricator.wikimedia.org/T95181
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Springle added a comment.
In https://phabricator.wikimedia.org/T96468#1222975, @Krenair wrote:
- Sanitarium config (@Coren/@Springle? This needs your confirmation)
Sanitarium is ready.
Not yet confirmed for labs replica views, but that need not block the wiki
creation upstream.
TASK
Springle added a comment.
Anything touching wikidatawiki needs to be done online, either with the OSC
script (a wrapper for percona toolkit) or slave-by-slave depool/repool. The
kind of change described in this ticket can be done using --no-replicate. It
should be added to the tracking ticket
Springle added a comment.
Unsure if your #1 and #2 are both on labsdb replicas, or if #2 is some other db
like tools-db or a custom instance.
If #1 and #2 are both connections to the labsdb production replicas, then yes,
either connection going idle for 60s will result in its disconnection
Springle added a comment.
No smoking gun yet.
As discussed a few times on labs-l in order fight abuse and replag we kill
things explicitly when:
1. A query runs for more that 28800 seconds
2. One or more queries are about to collectively cause an OOM (rare)
3. A client holds a connection open
