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| author | Robert Haas <rhaas@postgresql.org> | 2022-04-08 11:02:59 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2022-04-11 10:52:18 -0400 |
| commit | ad385a494f6ad863b38aa7c708f23aaf223438a7 (patch) | |
| tree | f58fa71f39347ef91e38161eeeafdccb59c40ecd /doc/src | |
| parent | e0064f0ff6dfada2695330c6bc1945fa7ae813be (diff) | |
| download | postgresql-ad385a494f6ad863b38aa7c708f23aaf223438a7.tar.gz postgresql-ad385a494f6ad863b38aa7c708f23aaf223438a7.zip | |
docs: Note the recovery_min_apply_delay bloats pg_wal.
Those WAL files that we're waiting to apply have to be stored
somewhere.
Thom Brown
Discussion: http://postgr.es/m/CAA-aLv4SkJRK6GGcd0Axt8kt6_eWMEbtG7f8NJpFh+rNshtdNA@mail.gmail.com
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 81cacdcbe40..cfbb20a39e1 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -4873,6 +4873,12 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class=" will end recovery without further waiting. </para> <para> + WAL records must be kept on the standby until they are ready to be + applied. Therefore, longer delays will result in a greater accumulation + of WAL files, increasing disk space requirements for the standby's + <filename>pg_wal</filename> directory. + </para> + <para> This parameter is intended for use with streaming replication deployments; however, if the parameter is specified it will be honored in all cases except crash recovery. |