pgsql: Allow parallelism in COPY (query) TO ...;

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Allow parallelism in COPY (query) TO ...;
Date: 2017-06-03 02:23:17
Message-ID: E1dGyij-0006ri-5W@gemulon.postgresql.org
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Allow parallelism in COPY (query) TO ...;

Previously this was not allowed, as copy.c didn't set the
CURSOR_OPT_PARALLEL_OK flag when planning the query. Set it.

While the lack of parallel query for COPY isn't strictly speaking a
bug, it does prevent parallelism from being used in a facility
commonly used to run long running queries. Thus backpatch to 9.6.

Author: Andres Freund
Discussion: https://postgr.es/m/20170531231958.ihanapplorptykzm@alap3.anarazel.de
Backpatch: 9.6, where parallelism was introduced.

Branch
------
REL9_6_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/8a7cd781ee9486584c1262b0f8598b1162ceb73a

Modified Files
--------------
src/backend/commands/copy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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