Re: SPGist "triple parity" concept doesn't work

Tom Lane wrote:

> I don't immediately see any good way to fix this.  I think the "triple
> parity" rule as it stands is hopelessly broken, but I don't know what
> to replace it with, even granting that we don't need to maintain on-disk
> compatibility.  (We'd have to tell people to reindex SPGist indexes
> anyway, because of the risk that they already contain circular links;
> so switching to a new layout rule doesn't seem to add any more pain.)
> Or we could try to modify the insertion algorithm so it doesn't lock
> two levels of the tree at once, but that seems pretty risky.

Is this the chance to add a metapage?

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
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