Re: Add 64-bit XIDs into PostgreSQL 15 - Mailing list pgsql-hackers

Hi!

Here is a rebased version of the patch set.
Major changes are:
1. Fix rare replica fault.
   Upon page pruning in heap_page_prune, page fragmentation repair is determined by
   a parameter repairFragmentation. At the same time, on a replica, upon handling XLOG_HEAP2_PRUNE record type
   in heap_xlog_prune, we always call heap_page_prune_execute with repairFragmentation parameter equal to true.
   This caused page inconsistency and lead to the crash of the replica. Fix this by adding new flag in
   struct xl_heap_prune.
2. Add support for meson build.
3. Add assertion "buffer is locked" in HeapTupleCopyBaseFromPage.
4. Add assertion "buffer is locked exclusive" in heap_page_shift_base.
5. Prevent excessive growth of xmax in heap_prepare_freeze_tuple.

As always, reviews are very welcome!