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Optimize DropRelFileNodesAllBuffers() for recovery.

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Similar to commit d6ad34f341, this patch optimizes
DropRelFileNodesAllBuffers() by avoiding the complete buffer pool scan and
instead find the buffers to be invalidated by doing lookups in the
BufMapping table.

This optimization helps operations where the relation files need to be
removed like Truncate, Drop, Abort of Create Table, etc.

Author: Kirk Jamison
Reviewed-by: Kyotaro Horiguchi, Takayuki Tsunakawa, and Amit Kapila
Tested-By: Haiying Tang
Discussion: https://postgr.es/m/OSBPR01MB3207DCA7EC725FDD661B3EDAEF660@OSBPR01MB3207.jpnprd01.prod.outlook.com
This commit is contained in:
Amit Kapila
2021-01-13 07:46:11 +05:30
parent fce7d0e6ef
commit bea449c635
3 changed files with 84 additions and 16 deletions
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src/include/storage/bufmgr.h
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@@ -205,7 +205,7 @@ extern void FlushRelationsAllBuffers(struct SMgrRelationData **smgrs, int nrels)
extern void FlushDatabaseBuffers(Oid dbid);
extern void DropRelFileNodeBuffers(struct SMgrRelationData *smgr_reln, ForkNumber *forkNum,
int nforks, BlockNumber *firstDelBlock);
extern void DropRelFileNodesAllBuffers(RelFileNodeBackend *rnodes, int nnodes);
extern void DropRelFileNodesAllBuffers(struct SMgrRelationData **smgr_reln, int nnodes);
extern void DropDatabaseBuffers(Oid dbid);
#define RelationGetNumberOfBlocks(reln) \