Hi, The freeze map changes, besides being very important, seem to be one of the patches with a high risk profile in 9.6. Robert had asked whether I'd take a look. I thought it'd be a good idea to review that while running tests for http://www.postgresql.org/message-id/CAMkU=1w85Dqt766AUrCnyqCXfZ+rsk1witAc_=v5+pce93s...@mail.gmail.com
For starters, I'm just going through the commits. It seems the relevant pieces are: a892234 Change the format of the VM fork to add a second bit per page. 77a1d1e Department of second thoughts: remove PD_ALL_FROZEN. fd31cd2 Don't vacuum all-frozen pages. 7087166 pg_upgrade: Convert old visibility map format to new format. ba0a198 Add pg_visibility contrib module. did I miss anything important? Greetings, Andres Freund -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
