Re: WIP patch for parallel pg_dump

On 12/03/2010 11:23 AM, Robert Haas wrote:
> On Fri, Dec 3, 2010 at 8:02 AM, Andrew Dunstan<andrew@dunslane.net>  wrote:
>> I think Josh Berkus' comments in the thread you mentioned are correct:
>>
>>> Actually, I'd say that there's a broad set of cases of people who want
>>> to do a parallel pg_dump while their system is active.  Parallel pg_dump
>>> on a stopped system will help some people (for migration, particularly)
>>> but parallel pg_dump with snapshot cloning will help a lot more people.
> But you failed to quote the rest of what he said:
>
>> So: if parallel dump in single-user mode is what you can get done, then
>> do it.  We can always improve it later, and we have to start somewhere.
>> But we will eventually need parallel pg_dump on active systems, and
>> that should remain on the TODO list.

Right, and the reason I don't think that's right is that it seems to me 
like a serious potential footgun.

But in any case, the reason I quoted Josh was in answer to a different 
point, namely Tom's statement about the limited potential uses.

cheers

andre