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Fix 6.X vacuum bug in shrinking code.

This commit is contained in:
Vadim B. Mikheev 1998-02-25 23:40:32 +00:00
parent 48a61651b5
commit 20ef87171c
1 changed files with 11 additions and 15 deletions
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26
src/backend/commands/vacuum.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.61 1998/02/03 21:57:27 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.62 1998/02/25 23:40:32 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -1083,23 +1083,19 @@ vc_rpfheap(VRelStats *vacrelstats, Relation onerel,
/*
* If no one tuple can't be added to this page -
* remove page from Fvpl. - vadim 11/27/96
*
* But we can't remove last page - this is our
* "show-stopper" !!! - vadim 02/25/98
*/
if (!vc_enough_space(ToVpd, vacrelstats->min_tlen))
if (ToVpd != Fvplast &&
!vc_enough_space(ToVpd, vacrelstats->min_tlen))
{
if (ToVpd != Fvplast)
{
Assert(Fnpages > ToVpI + 1);
memmove(Fvpl->vpl_pgdesc + ToVpI,
Fvpl->vpl_pgdesc + ToVpI + 1,
sizeof(VPageDescr *) * (Fnpages - ToVpI - 1));
}
Assert(Fnpages >= 1);
Assert(Fnpages > ToVpI + 1);
memmove(Fvpl->vpl_pgdesc + ToVpI,
Fvpl->vpl_pgdesc + ToVpI + 1,
sizeof(VPageDescr *) * (Fnpages - ToVpI - 1));
Fnpages--;
if (Fnpages == 0)
break;
/* get prev reapped page from Fvpl */
Fvplast = Fvpl->vpl_pgdesc[Fnpages - 1];
Fblklast = Fvplast->vpd_blkno;
Assert (Fvplast == Fvpl->vpl_pgdesc[Fnpages - 1]);
}
}
for (i = 0; i < Fnpages; i++)