Heikki Linnakangas wrote:
Florian G. Pflug wrote:
Joshua D. Drake wrote:
On Sun, 2006-11-19 at 11:28 -0800, Josh Berkus wrote:
Let's go with the easy fix. With regular 1GB segment size, having a few
empty files in the data directory isn't going to hurt anyone.
No, but it will confuse DBAs ("What the heck are all these 0B files?"). Maybe we should add code to VACUUM to look for these empty file segments and unlink them if they haven't been touched in a while (say, a day?).

I don't buy this argument. A smart DBA isn't going to do any such thing.
If you go around deleting unknown files you deserve everything you get.
Especially if you are in the middle of a PostgreSQL cluster tree.

Couldn't some application trigger this problem regularly (Say, once a day while importing new data), and therefore create an ever increasing number of empty
files that you can't get rid of without backup,reinit and restore?

No, the old empty files would get reused if the relation grows again. And they would get deleted if you truncate or drop the relation.
Ah, sorry, I had misunderstood that point. I believed that a new
segment would be created when the relation grows again, and the
empty file would linger around forever...

Thanks for your explaination
greetings, Florian Pflug

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