On Tue, Nov 24, 2020 at 11:11 PM Alvaro Herrera <alvhe...@alvh.no-ip.org> wrote:
> On 2020-Nov-24, Andy Fan wrote: > > > then we modified the copy/read/out functions for this node. In > > _readFuncExpr, > > we probably add something like > > > [ ... ] > > > Then we will get a compatible issue if we create a view with the node in > > the older version and access the view with the new binary. > > When nodes are modified, you have to increment CATALOG_VERSION_NO which > makes the new code incompatible with a datadir previously created Thank you Alvaro. I just think this issue can be avoided without causing the incompatible issue. IIUC, after the new binary isn't compatible with the datadir, the user has to dump/restore the whole database or use pg_upgrade. It is kind of extra work. -- for precisely this reason. > I probably didn't get the real point of this, sorry about that. -- Best Regards Andy Fan
