PostgreSQL 19 promotion can hang on stuck client writes
A barrier wait added for safer promotion has no upper bound when a backend is blocked sending to a paused or dead client, stalling failover and related operations.
By sudo#standby
PostgreSQL offline checksum flips can break or desync standbys
A regression from online checksums work, plus a long-standing gap in pg_checksums, can leave replicas verifying pages they never checksummed or silently diverge from the primary.
By sudo