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Improve docs and error messages for parallel vacuum.

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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
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Amit Kapila
2021-05-25 09:26:53 +05:30
parent 01e6f1a842
commit 0734b0e983
4 changed files with 7 additions and 7 deletions
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6
doc/src/sgml/ref/vacuumdb.sgml
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@ -275,11 +275,11 @@ PostgreSQL documentation
</varlistentry>
<varlistentry>
<term><option>-P <replaceable class="parameter">parallel_degree</replaceable></option></term>
<term><option>--parallel=<replaceable class="parameter">parallel_degree</replaceable></option></term>
<term><option>-P <replaceable class="parameter">parallel_workers</replaceable></option></term>
<term><option>--parallel=<replaceable class="parameter">parallel_workers</replaceable></option></term>
<listitem>
<para>
Specify the parallel degree of <firstterm>parallel vacuum</firstterm>.
Specify the number of parallel workers for <firstterm>parallel vacuum</firstterm>.
This allows the vacuum to leverage multiple CPUs to process indexes.
See <xref linkend="sql-vacuum"/>.
</para>