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Fix oversight in collecting values for cleanup_info records.

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vacuum_log_cleanup_info() now generates log records with a valid
latestRemovedXid set in all cases. Also be careful not to zero the
value when we do a round of vacuuming part-way through lazy_scan_heap().
Incidentally, this reduces frequency of conflicts in Hot Standby.
This commit is contained in:
Simon Riggs
2010-04-21 17:20:56 +00:00
parent a2c3931a24
commit bc2b85d904
3 changed files with 25 additions and 13 deletions
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4
src/include/access/heapam.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.148 2010/02/26 02:01:20 momjian Exp $
* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.149 2010/04/21 17:20:56 sriggs Exp $
*
*-------------------------------------------------------------------------
*/
@@ -144,7 +144,7 @@ extern void heap_page_prune_opt(Relation relation, Buffer buffer,
TransactionId OldestXmin);
extern int heap_page_prune(Relation relation, Buffer buffer,
TransactionId OldestXmin,
bool report_stats);
bool report_stats, TransactionId *latestRemovedXid);
extern void heap_page_prune_execute(Buffer buffer,
OffsetNumber *redirected, int nredirected,
OffsetNumber *nowdead, int ndead,