diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-10-04 15:48:17 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-10-04 15:48:17 -0400 |
| commit | d73f4c74dd34b19c19839f7ae09fb96442728509 (patch) | |
| tree | c90ec26d55c24bfca08d92cb6b43873cb64ae848 /src/backend/replication/logical/worker.c | |
| parent | 9ddef36278a9f676c07d0b4d9f33fa22e48ce3b5 (diff) | |
In the executor, use an array of pointers to access the rangetable.
Instead of doing a lot of list_nth() accesses to es_range_table,
create a flattened pointer array during executor startup and index
into that to get at individual RangeTblEntrys.
This eliminates one source of O(N^2) behavior with lots of partitions.
(I'm not exactly convinced that it's the most important source, but
it's an easy one to fix.)
Amit Langote and David Rowley
Discussion: https://postgr.es/m/468c85d9-540e-66a2-1dde-fec2b741e688@lab.ntt.co.jp
Diffstat (limited to 'src/backend/replication/logical/worker.c')
| -rw-r--r-- | src/backend/replication/logical/worker.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/backend/replication/logical/worker.c b/src/backend/replication/logical/worker.c index c3443c5a2ce..277da69fa6c 100644 --- a/src/backend/replication/logical/worker.c +++ b/src/backend/replication/logical/worker.c @@ -200,8 +200,7 @@ create_estate_for_relation(LogicalRepRelMapEntry *rel) rte->relid = RelationGetRelid(rel->localrel); rte->relkind = rel->localrel->rd_rel->relkind; rte->rellockmode = AccessShareLock; - estate->es_range_table = list_make1(rte); - estate->es_relations = (Relation *) palloc0(1 * sizeof(Relation)); + ExecInitRangeTable(estate, list_make1(rte)); resultRelInfo = makeNode(ResultRelInfo); InitResultRelInfo(resultRelInfo, rel->localrel, 1, NULL, 0); |