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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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13
src/backend/tcop/postgres.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.117 1999/05/26 12:55:55 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.118 1999/05/29 10:25:30 vadim Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -73,6 +73,8 @@
#include "utils/rel.h"
#include "utils/ps_status.h"
#include "utils/temprel.h"
#include "nodes/parsenodes.h"
#include "../backend/parser/parse.h"
#ifdef NOT_USED
#include "nodes/relation.h"
@ -715,6 +717,13 @@ pg_exec_query_dest(char *query_string, /* string to execute */
else if (Verbose)
TPRINTF(TRACE_VERBOSE, "ProcessUtility");
/*
* We have to set query SnapShot in the case of FETCH or COPY TO.
*/
if (nodeTag(querytree->utilityStmt) == T_FetchStmt ||
(nodeTag(querytree->utilityStmt) == T_CopyStmt &&
((CopyStmt *)(querytree->utilityStmt))->direction != FROM))
SetQuerySnapshot();
ProcessUtility(querytree->utilityStmt, dest);
}
else
@ -1527,7 +1536,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
if (!IsUnderPostmaster)
{
puts("\nPOSTGRES backend interactive interface ");
puts("$Revision: 1.117 $ $Date: 1999/05/26 12:55:55 $\n");
puts("$Revision: 1.118 $ $Date: 1999/05/29 10:25:30 $\n");
}
/* ----------------