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d811c037ce
Right now it is visible whether a replication slot is active in any session, but not in which. Adding the active_in column, containing the pid of the backend having acquired the slot, makes it much easier to associate pg_replication_slots entries with the corresponding pg_stat_replication/pg_stat_activity row. This should have been done from the start, but I (Andres) dropped the ball there somehow. Author: Craig Ringer, revised by me Discussion: CAMsr+YFKgZca5_7_ouaMWxA5PneJC9LNViPzpDHusaPhU9pA7g@mail.gmail.com