Simon Riggs wrote:
On Fri, 2009-05-15 at 17:39 +0300, Heikki Linnakangas wrote:
We've asked for some additional docs. What would be the objection to
that?
I'm certainly not opposed to improving docs.
OK, so will you update the docs as requested?
Well, we already have this in the docs:
Each time a new timeline is created, PostgreSQL creates a "timeline history"
file that shows which timeline it branched off from and when. These history files are
necessary to allow the system to pick the right WAL segment files when recovering from an
archive that contains multiple timelines. Therefore, they are archived into the WAL
archive area just like WAL segment files. The history files are just small text files, so
it's cheap and appropriate to keep them around indefinitely (unlike the segment files
which are large). You can, if you like, add comments to a history file to make your own
notes about how and why this particular timeline came to be. Such comments will be
especially valuable when you have a thicket of different timelines as a result of
experimentation.
What exactly do you want to change? Patch, please.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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