Re: logical changeset generation v4

On 2013-01-15 17:41:50 +1300, Mark Kirkwood wrote:
> On 15/01/13 17:37, Mark Kirkwood wrote:
> >On 15/01/13 14:38, Andres Freund wrote:
> >>Hi everyone,
> >>
> >>Here is the newest version of logical changeset generation.
> >>
> >>
> >
> >
> >
> >I'm quite interested in this feature - so tried applying the 19 patches to
> >the latest 9.3 checkout. Patch and compile are good.

Thanks! Any input welcome.

The git tree might make it easier to follow development ;)

> >However portals seem busted:
> >
> >bench=# BEGIN;
> >BEGIN
> >bench=# DECLARE c1 CURSOR FOR SELECT * FROM pgbench_accounts;
> >DECLARE CURSOR
> >bench=# FETCH 2 FROM c1;
> > aid | bid | abalance | filler
> >
> >-----+-----+----------+---------------------------------------------------------
> >
> >-----------------------------
> > 1 | 1 | 0 |
> >
> > 2 | 1 | 0 |
> >
> >(2 rows)
> >
> >bench=# DELETE FROM pgbench_accounts WHERE CURRENT OF c1;
> >The connection to the server was lost. Attempting reset: Failed.
> >
>
> Sorry - forgot to add: assert and debug build, and it is an assertion
> failure that is being picked up:
>
> TRAP: FailedAssertion("!(htup->t_tableOid != ((Oid) 0))", File: "tqual.c",
> Line: 940)

I unfortunately don't see the error here, I guess its related to how
stack is reused. But I think I found the error, check the attached patch
which I also pushed to the git repository.

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
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