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Teach CLUSTER to skip writing WAL if not needed (ie, not using archiving)

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--- Simon.
Also, code review and cleanup for the previous COPY-no-WAL patches --- Tom.
This commit is contained in:
Tom Lane
2007-03-29 00:15:39 +00:00
parent 4591fb1aa8
commit fba8113c1b
12 changed files with 281 additions and 182 deletions
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8
src/include/utils/rel.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.99 2007/03/19 23:38:32 wieck Exp $
* $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.100 2007/03/29 00:15:39 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -138,13 +138,17 @@ typedef struct RelationData
char rd_indexvalid; /* state of rd_indexlist: 0 = not valid, 1 =
* valid, 2 = temporarily forced */
SubTransactionId rd_createSubid; /* rel was created in current xact */
SubTransactionId rd_newRelfilenodeSubid; /* rel had new relfilenode in current xact */
SubTransactionId rd_newRelfilenodeSubid; /* new relfilenode assigned
* in current xact */
/*
* rd_createSubid is the ID of the highest subtransaction the rel has
* survived into; or zero if the rel was not created in the current top
* transaction. This should be relied on only for optimization purposes;
* it is possible for new-ness to be "forgotten" (eg, after CLUSTER).
* Likewise, rd_newRelfilenodeSubid is the ID of the highest subtransaction
* the relfilenode change has survived into, or zero if not changed in
* the current transaction (or we have forgotten changing it).
*/
Form_pg_class rd_rel; /* RELATION tuple */
TupleDesc rd_att; /* tuple descriptor */