| From: | Thomas Munro <tmunro(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Handle lack of DSM slots in parallel btree build. |
| Date: | 2020-01-30 22:34:19 |
| Message-ID: | E1ixIOB-0001oC-SR@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
Handle lack of DSM slots in parallel btree build.
If no DSM slots are available, a ParallelContext can still be
created, but its seg pointer is NULL. Teach parallel btree build
to cope with that by falling back to a regular non-parallel build,
to avoid crashing with a segmentation fault.
Back-patch to 11, where parallel CREATE INDEX landed.
Reported-by: Nicola Contu
Reviewed-by: Peter Geoghegan
Discussion: https://postgr.es/m/CA%2BhUKGJgJEBnkuODBVomyK3MWFvDBbMVj%3Dgdt6DnRPU-5sQ6UQ%40mail.gmail.com
Branch
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REL_12_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/1fcf62e0b837c1b814a86f3abf92ad4d36ca30e6
Modified Files
--------------
src/backend/access/nbtree/nbtsort.c | 9 +++++++++
1 file changed, 9 insertions(+)
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