> There is an IO completion callback that is called when the read into
> the buffer pool is finished. AFAIK, the callback will merge the
> pending changes from the insert buffer. Oh, and the name of the insert
> buffer has been changed to "change buffer" as it can buffer inserts
> and deletes in MySQL 5.5. Also note that there are no updates for
> secondary indexes. There is only insert and delete marking.
Seems like it still needs work. I'm not entirely convinced that an
index buffer would be a net win for PostgreSQL, given the different
structure of our storage. I'd look at those "fractal indexes" first.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com