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Further reductions in Hot Standby conflict processing. These

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come from the realistion that HEAP2_CLEAN records don't
always remove user visible data, so conflict processing for
them can be skipped. Confirm validity using Assert checks,
clarify circumstances under which we log heap_cleanup_info
records. Tuning arises from bug fixing of earlier safety
check failures.
This commit is contained in:
Simon Riggs
2010-04-22 02:15:45 +00:00
parent 95a777c612
commit 781ec6b75d
3 changed files with 14 additions and 11 deletions
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3
src/backend/access/heap/pruneheap.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/heap/pruneheap.c,v 1.23 2010/04/21 17:20:56 sriggs Exp $
* $PostgreSQL: pgsql/src/backend/access/heap/pruneheap.c,v 1.24 2010/04/22 02:15:45 sriggs Exp $
*
*-------------------------------------------------------------------------
*/
@@ -236,6 +236,7 @@ heap_page_prune(Relation relation, Buffer buffer, TransactionId OldestXmin,
{
XLogRecPtr recptr;
Assert(TransactionIdIsValid(prstate.latestRemovedXid));
recptr = log_heap_clean(relation, buffer,
prstate.redirected, prstate.nredirected,
prstate.nowdead, prstate.ndead,