Hi, At times it's useful to know the last replayed WAL record's timeline ID (especially on the standbys that are lagging in applying WAL while failing over - for reporting, logging and debugging purposes). AFICS, there's no function that exposes the last replayed TLI. We can either change the existing pg_last_wal_replay_lsn() to report TLI along with the LSN which might break the compatibility or introduce a new function pg_last_wal_replay_info() that emits both LSN and TLI. I'm fine with either of the approaches, but for now, I'm attaching a WIP patch that adds a new function pg_last_wal_replay_info().
Thoughts? Regards, Bharath Rupireddy.
v1-0001-Add-new-function-pg_last_wal_replay_info.patch
Description: Binary data
