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Fix rounding problem in dynahash.c's decision about when the target

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fill factor has been exceeded.  We usually run with ffactor == 1, but
the way the test was coded, it wouldn't split a bucket until the actual
fill factor reached 2.0, because of use of integer division.  Change
from > to >= so that it will split more aggressively when the table
starts to get full.
This commit is contained in:
Tom Lane 2004-11-21 22:57:00 +00:00
parent 7f1711f29d
commit 294c34bb9d
1 changed files with 2 additions and 2 deletions
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4
src/backend/utils/hash/dynahash.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/hash/dynahash.c,v 1.56 2004/10/25 00:46:43 neilc Exp $
* $PostgreSQL: pgsql/src/backend/utils/hash/dynahash.c,v 1.57 2004/11/21 22:57:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -662,7 +662,7 @@ hash_search(HTAB *hashp,
/* caller is expected to fill the data field on return */
/* Check if it is time to split the segment */
if (++hctl->nentries / (long) (hctl->max_bucket + 1) > hctl->ffactor)
if (++hctl->nentries / (long) (hctl->max_bucket + 1) >= hctl->ffactor)
{
/*
* NOTE: failure to expand table is not a fatal error, it