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PostgreSQL 13: support "wal_keep_size"

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Renamed from "wal_keep_segments" in core commit f5dff459.
This commit is contained in:
Ian Barwick
2020-08-31 17:17:00 +09:00
parent 0630d9644e
commit 1131e3aad2
4 changed files with 39 additions and 15 deletions
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4
doc/cloning-standbys.xml
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@@ -46,6 +46,7 @@
<para>
WAL management on the primary becomes much easier as there's no need
to use replication slots, and <varname>wal_keep_segments</varname>
(PostgreSQL 13 and later: <varname>wal_keep_size</varname>)
does not need to be set.
</para>
</listitem>
@@ -234,7 +235,8 @@ description = "Main cluster"
that any standby connected to the primary using a replication slot will always
be able to retrieve the required WAL files. This removes the need to manually
manage WAL file retention by estimating the number of WAL files that need to
be maintained on the primary using <varname>wal_keep_segments</varname>.
be maintained on the primary using <varname>wal_keep_segments</varname>
(PostgreSQL 13 and later: <varname>wal_keep_size</varname>).
Do however be aware that if a standby is disconnected, WAL will continue to
accumulate on the primary until either the standby reconnects or the replication
slot is dropped.