[Bigjob-users] Cannot rollback transaction (the error causing the rollback was: Cannot begin transaction.)

[Andre Luckow]

Hi Ole,
this is not the most common use case given that BJ was designed as
application-level pilot and not a service. Giving the nature of the
failure, I really think it is caused somewhere deep down in the advert
adaptor.

But, I would propose that you give the Redis backend a try.

Best,
Andre

On Sat, Dec 17, 2011 at 1:20 AM, Ole Weidner <oweidner at cct.lsu.edu> wrote:
> Hi Andre,
>
> I'm not sure, but I think this has to do with long running big job instances. In the context of my developments with bigjob, I have a big job / pilot job running for hours and hours and not necessarily processing work units.
>
> If I have an active bigjob instance with a 'fork://localhost' pilot and wait let's say an hour and then query the status of the big job, I get either the error below or the whole thing just hangs indefinitely. Has that been observed before?
>
> I suspect that it might have something to do with advert connections that are kept open but maybe are closed after some time on the PostgreSQL side?
>
> Cheers
> Ole
>
> On Dec 16, 2011, at 4:14 PM, Andre Luckow wrote:
>
>> Hi Ole,
>> I have never seen this error before. I suspect that this is an issue in the advert adaptor/service. Is the directory created? Can the run be completed?
>>
>> Best,
>> Andre
>>
>> On Dec 16, 2011, at 22:25, Ole Weidner <oweidner at cct.lsu.edu> wrote:
>>
>>> Hi,
>>>
>>> from time to time I get the following error with BigJob:
>>>
>>> 12/16/2011 03:21:35 PM - DEBUG - create advert entry: advert://SAGA:SAGA_client@advert.cct.lsu.edu:8080//bigjob/ef20fda2-282b-11e1-af5c-0016cb924ce9/localhost?
>>> 12/16/2011 03:21:35 PM - ERROR - SAGA(NoSuccess): default_advert: advert::advert_cpi_impl::create_directory: unexpected error during transaction rollback: Cannot rollback transaction. (the error causing the rollback was: Cannot begin transaction.)
>>>
>>> Any insights on that?
>>>
>>> Cheers
>>> Ole
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>