From: | ktm(at)rice(dot)edu |
---|---|
To: | pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: surprisingly slow creation of gist index used in exclude constraint |
Date: | 2020-05-14 20:16:53 |
Message-ID: | 20200514151653.Horde.pMpsKZFmvfY6NTOOhfRssA2@webmail.rice.edu |
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Lists: | pgsql-general |
Quoting Chris Withers <chris(at)withers(dot)org>:
> Hi,
>
> I'm upgrading a database from 9.4 to 11.5 by dumping from the old
> cluster and loading into the new cluster.
>
> The database is tiny: around 2.3G, but importing this table is
> proving problematic:
> Column | Type | Modifiers
> ...
> I feel like asking what I'm doing wrong here? The new server is
> pretty decent hardware...
>
> Concrete questions:
>
> - what, if anything, am I getting badly wrong here?
>
> - what can I do to speed up creation of this index?
>
> - failing that, what can I do to import and then create the index in
> the background?
>
> As you can imagine, a 15hr outage for an upgrade has not met with
> large amounts of happiness from the people whose application it is
> ;-)
>
> Chris
Hi Chris,
This sounds like a candidate for pg_logical replicating from the old
to new system.
Regards,
Ken
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