Re: Unreproducible bug in snapshot import code

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От Gurjeet Singh
Тема Re: Unreproducible bug in snapshot import code
Дата
Msg-id CABwTF4Xy8YqN4ygXSGO8VR8eK7cPzBB+8H8SiHSjyvQLXvMTqw@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Unreproducible bug in snapshot import code  (Fujii Masao <masao.fujii@gmail.com>)
Ответы Re: Unreproducible bug in snapshot import code
Список pgsql-hackers
On Tue, Oct 25, 2011 at 2:33 AM, Fujii Masao <masao.fujii@gmail.com> wrote:
On Tue, Oct 25, 2011 at 2:41 AM, Gurjeet Singh <singh.gurjeet@gmail.com> wrote:
> On Mon, Oct 24, 2011 at 1:08 PM, Alvaro Herrera <alvherre@commandprompt.com>
> wrote:
>>
>> Excerpts from Gurjeet Singh's message of lun oct 24 13:55:44 -0300 2011:
>>
>> >     Starting from line 89 of terminal1.txt we see this snippet:
>> >
>> > postgres=# rollback;
>> > ROLLBACK
>> > postgres=# begin TRANSACTION ;
>> > BEGIN
>> > postgres=# set transaction snapshot '000002C8-1';
>> > ERROR:  SET TRANSACTION SNAPSHOT must be called before any query
>> > postgres=# rollback;
>> > ROLLBACK
>> >
>> >
>> >     As you can see the SET TRANSACTION SNAPSHOT was the first statement
>> > in
>> > that transaction, and yet the ERROR message says that it is not.
>>
>> Maybe the tab-completion feature issued a query before the set
>> transaction command.
>
> I have tried reproducing the bug starting from 1 and 2 transactions before
> the one shown in snippet, and I used tab-completion to get the same
> screen-output as termonal1.txt and yet it's not reproducible.

I could reproduce it when I typed TAB just after typing "set" in "set
transaction snapshot".
As Tom and Alvaro pointed out, the tab-completion issues a query and which
prevents the "set transaction snapshot" command.

Great! That settles it then. Reproducible, but not a bug.

Thanks,
--
Gurjeet Singh
EnterpriseDB Corporation
The Enterprise PostgreSQL Company

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