Tom Lane <[EMAIL PROTECTED]> wrote: > > Why do index access methods use LP_DELETE? > > My recollection is that I deliberately used LP_DELETE for the > known-dead-tuple marker so that there couldn't be any confusion with > the use of LP_USED. AFAIR, LP_USED isn't actually used in indexes, > so we could do it differently if there were another possible use for > the flag bit ... have you got one in mind?
Thanks. I understood there is little difference between non-LP_USED and LP_DELETE for indexes. I'm thinking to use LP_DELETE for relation tuples for incremental vacuum, which is discussed in http://archives.postgresql.org/pgsql-hackers/2005-03/msg00518.php I'll try to mark tuples with LP_DELETE on visibility checking and recycle the pages by bgwriter. ...However it is still a stage of an idea. --- ITAGAKI Takahiro NTT Cyber Space Laboratories ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org