Re: [HACKERS] Server Crashes if try to provide slot_name='none' atthe time of creating subscription.

Added to open item lists.

On Tue, May 16, 2017 at 6:35 AM, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> On Mon, May 15, 2017 at 8:09 PM, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>> On Mon, May 15, 2017 at 8:06 PM, Kuntal Ghosh
>> <kuntalghosh.2007@gmail.com> wrote:
>>> On Mon, May 15, 2017 at 4:00 PM, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>>>> On Mon, May 15, 2017 at 6:41 PM, tushar <tushar.ahuja@enterprisedb.com> wrote:
>>>>> Hi,
>>>>>
>>>>> Server Crashes if we try to provide slot_name='none' at the time of creating
>>>>> subscription -
>>>>>
>>>>> postgres=#  create subscription sub2 connection 'dbname=postgres port=5000
>>>>> user=centos password=f' publication abc with (slot_name='none');
>>>>> NOTICE:  synchronized table states
>>>>> server closed the connection unexpectedly
>>>>>     This probably means the server terminated abnormally
>>>>>     before or while processing the request.
>>>>> The connection to the server was lost. Attempting reset: Failed.
>>>>> !>
>>>>>
>>>>
>>>> Thank you for reporting.
>>>> I think create_slot and enabled should be set to false forcibly when
>>>> slot_name = 'none'. Attached patch fixes it, more test and regression
>>>> test case are needed though.
>>>>
>>> I think the patch doesn't solve the problem completely. For example,
>>> postgres=# create subscription sub3 connection 'dbname=postgres
>>> port=5432 user=edb password=edb' publication abc with
>>> (slot_name='none',create_slot=true);
>>> ERROR:  slot_name = NONE and create slot are mutually exclusive options
>>> postgres=# create subscription sub3 connection 'dbname=postgres
>>> port=5432 user=edb password=edb' publication abc with
>>> (create_slot=true,slot_name='none');
>>> ERROR:  could not connect to the publisher: could not connect to
>>> server: Connection refused
>>>     Is the server running locally and accepting
>>>     connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
>>>
>>> Changing the order of subscription parameter changes the output. I
>>> think the modifications should be done at the end of the function.
>>> Attached a patch for the same.
>>>
>>
>> Yes, you're patch fixes it correctly.
>>
>
> I've updated Kuntal's patch, added regression test for option
> combination and updated documentation.
>
> Regards,
>
> --
> Masahiko Sawada
> NIPPON TELEGRAPH AND TELEPHONE CORPORATION
> NTT Open Source Software Center



-- 
Thanks & Regards,
Kuntal Ghosh
EnterpriseDB: http://www.enterprisedb.com