Re: Uber migrated from Postgres to MySQL

On Thu, Jul 28, 2016 at 02:23:18AM -0000, Greg Sabino Mullane wrote:
>
> Marc wrote:
> > I donât have a 1TB database to try it on, mind you, so your
> > âwait couple of daysâ might be *with* the âlink option?
>
> I think you mean *without*, but yeah, there is no way the --link
> option is going to take that long. Hard links are awesome. We've upgraded
> some really big databases, and --link is really, really fast.
> If you can't use --link (usually because you want to get over
> the checksum hump), we use something like Bucardo to help out.
> No need to ever wait a "couple of days" as OP claims. :)
>
> What really bites is the analyze afterwards. That's the part
> that takes too long (yes, --in-stages helps some). Would love
> to see progress made there.

Agreed. I will try to prioritize it.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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