On Fri, Jun 7, 2013 at 11:36 PM, Andres Freund <and...@2ndquadrant.com> wrote: > On 2013-06-07 23:28:56 +0900, Amit Langote wrote: >> On Fri, Jun 7, 2013 at 11:15 PM, Robert Haas <robertmh...@gmail.com> wrote: >> > On Wed, Jun 5, 2013 at 10:06 PM, Amit Langote <amitlangot...@gmail.com> >> > wrote: >> >> At what point do the entries in the pending list are moved to the main >> >> GIN data structure? >> >> From documentation, I read that overflowing work_mem and vacuum are >> >> two such causes; what about when the concerned backend is to exit and >> >> autovacuum has not yet kicked in? >> > >> > I don't think there's any special handling for that case, nor do I >> > think any is needed. >> > >> >> Okay, aside from that case, what else would move those to the main >> structure? They (the entries in the unsorted pending list) are in the >> local memory (work_mem?) of the backend, right? > > No, it's in the normal heap, pointed to by the metapage. Storing it in > local memory would mean we would have to flush it out before commit. > > That part of gin is actually quite readable code, so I suggest looking > there. Start with ginfast.c:ginHeapTupleFastInsert(). >
Thanks. -- Amit Langote -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
