From: | Andy Colson <andy(at)squeakycode(dot)net> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: unlogged tables |
Date: | 2010-12-03 03:37:17 |
Message-ID: | 4CF865ED.50408@squeakycode.net |
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Thread: | |
Lists: | pgsql-hackers |
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> 2nd) I can get the data to stick around after restart. Though not reliably. In general:
>
> create and fill a table, vacuum it (not sure if its important, I do it because thats what I'd done in my pgbench testing where I noticed the data stuck around), wait an hour (I usually left it for 12-24 hours, but recreated it with as little as a half hour), then restart pg. Sometimes the data is there... sometimes not.
>
> I also filled my table with more data than memory would hold so it would spill to disk, again, because it recreates my pgbench setup.
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> I'm still working on finding the exact steps, but I wanted to get you #1 above.
>
> -Andy
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Ok, forget the time thing. Has nothing to do with it. (Which everyone already assumed I imagine).
Its truncate.
Create unloged table, fill it, truncate it, fill it again, restart pg, and the data will still be there.
-Andy
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