doc: Clarify old WAL files are kept until they are summarized.
commit56499315a74f97d220373e396903c389d85c8933
authorFujii Masao <fujii@postgresql.org>
Sun, 15 Dec 2024 02:18:18 +0000 (15 11:18 +0900)
committerFujii Masao <fujii@postgresql.org>
Sun, 15 Dec 2024 02:18:18 +0000 (15 11:18 +0900)
treed6c43d83c4c554edb0e96165b7aa1989e6058c80
parent969bbd0fafc0f4d9ef504ca98a127c8d945f71a0
doc: Clarify old WAL files are kept until they are summarized.

The documentation in wal.sgml explains that old WAL files cannot be
removed or recycled until they are archived (when WAL archiving is used)
or replicated (when using replication slots). However, it did not mention
that, similarly, old WAL files are also kept until they are summarized
if WAL summarization is enabled. This commit adds that clarification
to the documentation.

Back-patch to v17 where WAL summarization was added.

Author: Fujii Masao
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/fd0eb0a5-f43b-4e06-b450-cbca011b6cff@oss.nttdata.com
doc/src/sgml/wal.sgml