Re: [HACKERS] logical decoding of two-phase transactions

On Wed, Oct 21, 2020 at 1:38 PM Peter Smith <smithpb2250(at)gmail(dot)com> wrote:
>
> The PG docs for PREPARE TRANSACTION [1] don't say anything about an
> empty (zero length) transaction-id.
> e.g. PREPARE TRANSACTION '';
> [1] https://www.postgresql.org/docs/current/sql-prepare-transaction.html
>
> ~
>
> Meanwhile, during testing I found the 2PC prepare hangs when an empty
> id is used.
>

Can you please take an example to explain what you are trying to say?
I have tried below and doesn't face any problem:

postgres=# Begin;
BEGIN
postgres=*# select txid_current();
txid_current
--------------
534
(1 row)
postgres=*# Prepare Transaction 'foo';
PREPARE TRANSACTION
postgres=# Commit Prepared 'foo';
COMMIT PREPARED
postgres=# Begin;
BEGIN
postgres=*# Prepare Transaction 'foo';
PREPARE TRANSACTION
postgres=# Commit Prepared 'foo';
COMMIT PREPARED

--
With Regards,
Amit Kapila.