Streaming data from live server and we see these messages on the hot standby server.
2017-09-06 14:42:09 BST 11548 WARNING: page 30558 of relation base/2497261/2504373 is uninitialized 2017-09-06 14:42:09 BST 11548 CONTEXT: xlog redo at 44/5E0B7CA8 for Heap2/VISIBLE: cutoff xid 29182314 flags 1 2017-09-06 14:42:09 BST 11548 PANIC: WAL contains references to invalid pages 2017-09-06 14:42:09 BST 11548 CONTEXT: xlog redo at 44/5E0B7CA8 for Heap2/VISIBLE: cutoff xid 29182314 flags 1 2017-09-06 14:42:09 BST 11545 LOG: startup process (PID 11548) was terminated by signal 6: Aborted 2017-09-06 14:42:09 BST 11545 LOG: terminating any other active server processes
Have to resync the files on the hot standby, restart the standby and streaming continues but then stops again a few days later.
No obvious data corruptions as pg_dump generates backups on the effected databases and users are accessing the live server without issue. I think it is a timing issue in the generation of the WAL's as if we run a vacuum/analyse/pg_dump on the live server against the effected tables no errors/issues are reported in the log.
