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Create a GUC parameter temp_tablespaces that allows selection of the

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tablespace(s) in which to store temp tables and temporary files.  This is a
list to allow spreading the load across multiple tablespaces (a random list
element is chosen each time a temp object is to be created).  Temp files are
not stored in per-database pgsql_tmp/ directories anymore, but per-tablespace
directories.

Jaime Casanova and Albert Cervera, with review by Bernd Helmle and Tom Lane.
This commit is contained in:
Tom Lane
2007-06-03 17:08:34 +00:00
parent 5d429f8d88
commit acfce502ba
26 changed files with 505 additions and 184 deletions
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5
src/backend/utils/sort/logtape.c
View File

@@ -70,13 +70,14 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/sort/logtape.c,v 1.23 2007/01/05 22:19:47 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/sort/logtape.c,v 1.24 2007/06/03 17:08:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "commands/tablespace.h"
#include "storage/buffile.h"
#include "utils/logtape.h"
@@ -528,7 +529,7 @@ LogicalTapeSetCreate(int ntapes)
Assert(ntapes > 0);
lts = (LogicalTapeSet *) palloc(sizeof(LogicalTapeSet) +
(ntapes - 1) *sizeof(LogicalTape));
lts->pfile = BufFileCreateTemp(false);
lts->pfile = BufFileCreateTemp(false, GetTempTablespace());
lts->nFileBlocks = 0L;
lts->forgetFreeSpace = false;
lts->blocksSorted = true; /* a zero-length array is sorted ... */

11
src/backend/utils/sort/tuplestore.c
View File

@@ -38,7 +38,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/sort/tuplestore.c,v 1.31 2007/05/21 17:57:34 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/sort/tuplestore.c,v 1.32 2007/06/03 17:08:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -46,6 +46,7 @@
#include "postgres.h"
#include "access/heapam.h"
#include "commands/tablespace.h"
#include "executor/executor.h"
#include "storage/buffile.h"
#include "utils/memutils.h"
@@ -424,8 +425,14 @@ tuplestore_puttuple_common(Tuplestorestate *state, void *tuple)
/*
* Nope; time to switch to tape-based operation.
*
* If the temp table is slated to outlive the current transaction,
* force it into my database's default tablespace, so that it will
* not pose a threat to possible tablespace drop attempts.
*/
state->myfile = BufFileCreateTemp(state->interXact);
state->myfile = BufFileCreateTemp(state->interXact,
state->interXact ? InvalidOid :
GetTempTablespace());
state->status = TSS_WRITEFILE;
dumptuples(state);
break;