I wrote:
> The equal-key logic has been entirely rewritten for 7.1, and I believe
> that it's not subject to this bug any longer. I'm very hesitant to try
> to jury-rig a solution for 7.0, though
Actually, after thinking a little more, I think that the attached patch
might cure the problem in 7.0.3. Give it a try, if you like.
regards, tom lane
*** src/backend/access/nbtree/nbtsort.c.orig Wed Apr 12 13:14:49 2000
--- src/backend/access/nbtree/nbtsort.c Wed Jan 3 23:37:46 2001
***************
*** 321,327 ****
btisz,
(PageGetPageSize(npage) - sizeof(PageHeaderData) - MAXALIGN(sizeof(BTPageOpaqueData))) /3 -
sizeof(ItemIdData));
! if (pgspc < btisz)
{
Buffer obuf = nbuf;
Page opage = npage;
--- 321,327 ----
btisz,
(PageGetPageSize(npage) - sizeof(PageHeaderData) - MAXALIGN(sizeof(BTPageOpaqueData))) /3 -
sizeof(ItemIdData));
! while (pgspc < btisz)
{
Buffer obuf = nbuf;
Page opage = npage;
***************
*** 436,441 ****
--- 436,448 ----
* we aren't locking).
*/
_bt_wrtbuf(index, obuf);
+
+ /*
+ * Recompute pgspc and loop back to check free space again. If
+ * we were forced to split at a bad split point, we might need
+ * to split again.
+ */
+ pgspc = PageGetFreeSpace(npage);
}
/*
