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doc: Fix description about bgwriter and checkpoint in HA section 

Since 806a2ae, the work of the bgwriter is split the checkpointer, but a
portion of the documentation did not get the message.

Author: Masahiko Sawada
Discussion: https://postgr.es/m/CA+fd4k6jXxjAtjMVC=wG3=QGpauZBtcgN3Jhw+oV7zXGKVLKzQ@mail.gmail.com
Backpatch-through: 9.5
This commit is contained in:
Michael Paquier 2020-08-17 10:23:17 +09:00
parent f6661d3df2
commit b4f16397af
1 changed files with 4 additions and 3 deletions
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7
doc/src/sgml/high-availability.sgml
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@ -2380,9 +2380,10 @@ LOG: database system is ready to accept read only connections
</para>
<para>
The background writer is active during recovery and will perform
restartpoints (similar to checkpoints on the primary) and normal block
cleaning activities. This can include updates of the hint bit
The checkpointer process and the background writer process are active during
recovery. The checkpointer process will perform restartpoints (similar to
checkpoints on the primary) and the background writer process will perform
normal block cleaning activities. This can include updates of the hint bit
information stored on the standby server.
The <command>CHECKPOINT</command> command is accepted during recovery,
though it performs a restartpoint rather than a new checkpoint.