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| author | Robert Haas <rhaas@postgresql.org> | 2017-11-28 11:39:16 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2017-11-28 11:49:01 -0500 |
| commit | ec7629dfb98a34cf4e459cf6b27febfd33ae9ad5 (patch) | |
| tree | c4625574e9f91d6987d5e86b91ece925c33c4dc4 /src/backend/executor/nodeMergejoin.c | |
| parent | 7015bb38949a44849b7a2e6c139700d20d82858b (diff) | |
| download | postgresql-ec7629dfb98a34cf4e459cf6b27febfd33ae9ad5.tar.gz postgresql-ec7629dfb98a34cf4e459cf6b27febfd33ae9ad5.zip | |
Teach bitmap heap scan to cope with absence of a DSA.
If we have a plan that uses parallelism but are unable to execute it
using parallelism, for example due to a lack of available DSM
segments, then the EState's es_query_dsa will be NULL. Parallel
bitmap heap scan needs to fall back to a non-parallel scan in such
cases.
Patch by me, reviewed by Dilip Kumar
Discussion: http://postgr.es/m/CAEepm=0kADK5inNf_KuemjX=HQ=PuTP0DykM--fO5jS5ePVFEA@mail.gmail.com
Diffstat (limited to 'src/backend/executor/nodeMergejoin.c')
0 files changed, 0 insertions, 0 deletions