Re: logical changeset generation v4 - Heikki's thoughts about the patch state

On 01/23/2013 05:17 PM, Robert Haas wrote:

> Of course, I have no evidence that that will happen.  But it is a
> really big piece of code, and therefore unless you are superman, it's
> probably got a really large number of bugs.  The scary thing is that
> it is not as if we can say, well, this is a big hunk of code, but it
> doesn't really touch the core of the system, so if it's broken, it'll
> be broken itself, but it won't break anything else.  Rather, this code
> is deeply in bed with WAL, with MVCC, and with the on-disk format of
> tuples, and makes fundamental changes to the first two of those.  You
> agreed with Tom that 9.2 is the buggiest release in recent memory, but
> I think logical replication could easily be an order of magnitude
> worse.

Command Prompt worked for YEARS to get logical replication right and we 
never got it to the point where I would have been happy submitting it to 
-core.

It behooves .Org to be extremely conservative about this feature. 
Granted, it is a feature we should have had years ago but still. It is 
not a simple thing, it is not an easy thing. It is complicated and 
complex to get correcft.



JD




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