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This commit reworks a bit the set-returning functions of pg_walinspect, making them more flexible regarding their end LSN: - pg_get_wal_records_info() - pg_get_wal_stats() - pg_get_wal_block_info() The end LSNs given to these functions is now handled so as a value higher than the current LSN of the cluster (insert LSN for a primary, or replay LSN for a standby) does not raise an error, giving more flexibility to monitoring queries. Instead, the functions return results up to the current LSN, as found at the beginning of each function call. As an effect of that, pg_get_wal_records_info_till_end_of_wal() and pg_get_wal_stats_till_end_of_wal() are now removed from 1.1, as the existing, equivalent functions are able to offer the same possibilities. Author: Bharath Rupireddy Discussion: https://postgr.es/m/CALj2ACU0_q-o4DSweyaW9NO1KBx-QkN6G_OzYQvpjf3CZVASkg@mail.gmail.com