diff options
Diffstat (limited to 'src/backend/access/transam/parallel.c')
| -rw-r--r-- | src/backend/access/transam/parallel.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/access/transam/parallel.c b/src/backend/access/transam/parallel.c index f357804fda0..4164fcc5542 100644 --- a/src/backend/access/transam/parallel.c +++ b/src/backend/access/transam/parallel.c @@ -220,6 +220,15 @@ InitializeParallelDSM(ParallelContext *pcxt) shm_toc_estimate_keys(&pcxt->estimator, 1); /* + * If we manage to reach here while non-interruptible, it's unsafe to + * launch any workers: we would fail to process interrupts sent by them. + * We can deal with that edge case by pretending no workers were + * requested. + */ + if (!INTERRUPTS_CAN_BE_PROCESSED()) + pcxt->nworkers = 0; + + /* * Normally, the user will have requested at least one worker process, but * if by chance they have not, we can skip a bunch of things here. */ |