Bruce Momjian <pgman@candle.pha.pa.us> writes:
> My idea is that we not put UNDO information into WAL but keep a List of
> rel ids / tuple ids in the memory of each backend and do the undo inside
> the backend.
The complaints about WAL size amount to "we don't have the disk space
to keep track of this, for long-running transactions". If it doesn't
fit on disk, how likely is it that it will fit in memory?
regards, tom lane