On Wed, 5 Aug 2020 at 14:13, Justin Pryzby <pry...@telsasoft.com> wrote: > Also odd (to me). If I encourage more workers, there are "slots" for each > "planned" worker, even though fewer were launched:
Looking at explain.c for "num_workers; " (including the final space at the end), looking at each for loop that loops over each worker, quite a number of those locations have a condition that skips the worker. For example, show_sort_info() does if (sinstrument->sortMethod == SORT_TYPE_STILL_IN_PROGRESS) continue; /* ignore any unfilled slots */ So maybe Hash Agg should be doing something similar. Additionally, maybe it should not show the leader details if the leader didn't help. David
