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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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14
src/backend/executor/nodeHash.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.112 2007/06/01 17:38:44 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.113 2007/06/03 17:07:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -24,6 +24,7 @@
#include <math.h>
#include <limits.h>
#include "commands/tablespace.h"
#include "executor/execdebug.h"
#include "executor/hashjoin.h"
#include "executor/instrument.h"
@ -266,6 +267,7 @@ ExecHashTableCreate(Hash *node, List *hashOperators)
hashtable->totalTuples = 0;
hashtable->innerBatchFile = NULL;
hashtable->outerBatchFile = NULL;
hashtable->hashTblSpc = InvalidOid;
hashtable->spaceUsed = 0;
hashtable->spaceAllowed = work_mem * 1024L;
@ -325,6 +327,8 @@ ExecHashTableCreate(Hash *node, List *hashOperators)
hashtable->outerBatchFile = (BufFile **)
palloc0(nbatch * sizeof(BufFile *));
/* The files will not be opened until needed... */
/* ... but we want to choose the tablespace only once */
hashtable->hashTblSpc = GetTempTablespace();
}
/*
@ -506,6 +510,8 @@ ExecHashIncreaseNumBatches(HashJoinTable hashtable)
palloc0(nbatch * sizeof(BufFile *));
hashtable->outerBatchFile = (BufFile **)
palloc0(nbatch * sizeof(BufFile *));
/* time to choose the tablespace, too */
hashtable->hashTblSpc = GetTempTablespace();
}
else
{
@ -558,7 +564,8 @@ ExecHashIncreaseNumBatches(HashJoinTable hashtable)
{
/* dump it out */
Assert(batchno > curbatch);
ExecHashJoinSaveTuple(HJTUPLE_MINTUPLE(tuple),
ExecHashJoinSaveTuple(hashtable,
HJTUPLE_MINTUPLE(tuple),
tuple->hashvalue,
&hashtable->innerBatchFile[batchno]);
/* and remove from hash table */
@ -650,7 +657,8 @@ ExecHashTableInsert(HashJoinTable hashtable,
* put the tuple into a temp file for later batches
*/
Assert(batchno > hashtable->curbatch);
ExecHashJoinSaveTuple(tuple,
ExecHashJoinSaveTuple(hashtable,
tuple,
hashvalue,
&hashtable->innerBatchFile[batchno]);
}