Commit Graph

2 Commits

Author SHA1 Message Date
Stan Hu b6125f7045 Fix fast admin counters not working when PostgreSQL has secondaries
This commit does a number of things:

1. Reduces the number of queries needed by perform a single query to get all
the tuples for the relevant rows.

2. Uses a transaction to query the tuple counts to ensure that the data
is retrieved from the primary.

Closes #46742
2018-05-25 22:58:43 -07:00
Stan Hu e38938b332 Fix Error 500 viewing admin page due to statement timeouts
Uses PostgreSQL tuple estimates to provide a much faster yet approximate
count. See https://wiki.postgresql.org/wiki/Slow_Counting for more details.
We only use this fast method if the table has been analyzed or vacuumed
within the last hour.

Closes #46255
2018-05-16 08:27:48 -07:00