Amit Kapila 0734b0e983 Improve docs and error messages for parallel vacuum.
The error messages, docs, and one of the options were using
'parallel degree' to indicate parallelism used by vacuum command. We
normally use 'parallel workers' at other places so change it for parallel
vacuum accordingly.

Author: Bharath Rupireddy
Reviewed-by: Dilip Kumar, Amit Kapila
Backpatch-through: 13
Discussion: https://postgr.es/m/CALj2ACWz=PYrrFXVsEKb9J1aiX4raA+UBe02hdRp_zqDkrWUiw@mail.gmail.com
2021-05-25 09:26:53 +05:30
..
2021-05-17 14:30:27 +02:00
2017-03-23 14:16:45 -04:00
2021-05-10 14:36:21 +02:00