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Code Activity

1. Run all pg_dump queries in single serializable transaction.

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2. Get rid of locking when updating statistics in vacuum.
3. Use QuerySnapshot in COPY TO and call SetQuerySnashot
   in main tcop loop before FETCH and COPY TO.
This commit is contained in:
Vadim B. Mikheev
1999-05-29 10:25:33 +00:00
parent bbbc211ed1
commit df9e539ea2
4 changed files with 42 additions and 144 deletions
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6
src/backend/commands/copy.c
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@ -6,7 +6,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.78 1999/05/26 12:55:10 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.79 1999/05/29 10:25:29 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -381,7 +381,7 @@ CopyTo(Relation rel, bool binary, bool oids, FILE *fp, char *delim)
int32 ntuples;
TupleDesc tupDesc;
scandesc = heap_beginscan(rel, 0, SnapshotNow, 0, NULL);
scandesc = heap_beginscan(rel, 0, QuerySnapshot, 0, NULL);
attr_count = rel->rd_att->natts;
attr = rel->rd_att->attrs;
@ -1363,7 +1363,7 @@ CountTuples(Relation relation)
int i;
scandesc = heap_beginscan(relation, 0, SnapshotNow, 0, NULL);
scandesc = heap_beginscan(relation, 0, QuerySnapshot, 0, NULL);
i = 0;
while (HeapTupleIsValid(tuple = heap_getnext(scandesc, 0)))