| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
| Cc: | David Rowley <dgrowleyml(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Andrew <pgsqlhackers(at)andrewrepp(dot)com> |
| Subject: | Re: pg_dump versus hash partitioning |
| Date: | 2023-02-02 14:52:34 |
| Message-ID: | 1533086.1675349554@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> On 2023-02-01 We 20:03, Tom Lane wrote:
>> Anyway, after re-reading the old thread I wonder if my first instinct
>> (force --load-via-partition-root for enum hash cases only) was the
>> best compromise after all. I'm not sure how painful it is to get
>> pg_dump to detect such cases, but it's probably possible.
> Given the other problems you enumerated upthread, I'd be more inclined
> to go with your other suggestion of
> "--load-via-partition-root=on/off/auto" (with the default presumably
> "auto").
Hmm ... is there any actual value in "off" in this case? We can be
just about certain that dump/reload of a hashed enum key will fail.
If we made "auto" also use --load-via-partition-root for range keys
having collation properties, there'd be more of an argument for
letting users override it.
regards, tom lane
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