Niphlod I will use postgresql in production and your solution as well. 
Thank you for helping me! ;)

El miércoles, 21 de septiembre de 2016, 2:33:30 (UTC-5), Niphlod escribió:
>
> that error is due - mostly - when the backend is too much pressured (i.e. 
> you're using sqlite, or too many workers, or a too low heatbeat)
>
> this is the fix  https://github.com/web2py/web2py/pull/1453 . you can 
> subscribe to it to know when it'll be merged.
>
> On Tuesday, September 20, 2016 at 5:38:08 PM UTC+2, Bernardo Leon wrote:
>>
>> Thank you for your reply. Can you reply this thread when the fix is 
>> published?
>>
>> I don't know if this is related to the same bug but in my worker process 
>> terminal I have this message:
>>
>> ERROR:web2py.scheduler.cedia-Satellite-L55-C#18606:    error popping tasks
>>
>> why do I have this error? Thanks.
>>
>> El lunes, 19 de septiembre de 2016, 13:37:05 (UTC-5), Niphlod escribió:
>>>
>>> sorry, a bug slipped in. In the wait for the fix, please use 
>>> next_run_time in addition to start_time.
>>>
>>> On Monday, September 19, 2016 at 6:27:28 PM UTC+2, Bernardo Leon wrote:
>>>>
>>>> Hi, I am trying to run tasks in the future based on a time the user 
>>>> specifies but as soon as the task is queued it is executed, what am I 
>>>> doing 
>>>> wrong?
>>>>
>>>> I am using web2py Version 2.14.6-stable+timestamp.2016.05.10.00.21.47
>>>>
>>>> This is my model.db (part of it)
>>>>
>>>> db = DAL('sqlite://recomendadorexpertos.db')
>>>>
>>>> db.define_table('topicos',
>>>>                Field('curso', 'reference cursos'),
>>>>                Field('nombre', 'string', required=True, length=512),
>>>>                Field('palabras_clave', 'text', readable=False, 
>>>> required=True, length=2048),
>>>>                Field('fecha_inicio_identificacion', 'date', 
>>>> required=True, comment=T('Indica la fecha desde la cual se empezará a 
>>>> buscar expertos.')),
>>>>                Field('fecha_fin_identificacion', 'date', required=True, 
>>>> comment=T('Indica la fehca en la cual se publicarán las recomendaciónes de 
>>>> expertos.')),
>>>>                Field('fecha_fin_publicacion', 'date', comment=T('Indica 
>>>> la fecha hasta cuando se publicaran las recomendaciones de expertos 
>>>> (opcional)')),
>>>>                Field('timestamp_get_tweets_etiquetado', 'datetime', 
>>>> readable=False, writable=False), #Para mostrar al usuario desde cuando se 
>>>> estan descargando tweets para etiquetado.
>>>>                Field('link_descarga_tweets_etiquetado', 'string', 
>>>> readable=False, writable=False, length=2048),
>>>>                Field('upload_archivo_etiquetado', 'upload', 
>>>> length=524288, 
>>>> uploadfolder='/var/www/web2py/applications/RecomendadorExpertos/archivos_etiquetados/',
>>>>  
>>>> autodelete=True, comment=T('Primero inicie el proceso de descarga de 
>>>> tweets 
>>>> para este topico, descargue el archivo para etiquetado, etiquetelo y 
>>>> subalo 
>>>> aqui.'), label=T('Subir archivo etiquetado'), readable=False), #Cambiar el 
>>>> nombre del archivo que suba a [nombre_topico].csv
>>>>                Field('path_modelo', 'string', readable=False, 
>>>> writable=False, length=2048), #Ruta del modelo entrenado
>>>>                Field('topico_configurado_completamente', 'integer', 
>>>> readable=True, writable=False, default=1, 
>>>> represent=representTopicoConfigurado), #Sirve para mostrar un check alado 
>>>> del archivo subido una vez terminado de generarse el modelo, para que el 
>>>> profesor sepa que ya esta todo bien.
>>>>                Field('id_scheduler_task_descarga_tweets', 'integer', 
>>>> readable=False, writable=False),
>>>>                Field('id_scheduler_task_identificacion_expertos', 
>>>> 'integer', readable=False, writable=False),
>>>>                Field('id_scheduler_task_publicacion_expertos', 
>>>> 'integer', readable=False, writable=False))
>>>>
>>>>
>>>> This is my Scheduler.py
>>>>
>>>> def task_iniciar_descarga_tweets(row):
>>>>     return 'descarga de tweets terminada'
>>>>
>>>> def task_iniciar_identificacion_expertos(nombre_topico):
>>>>     return 'identificacion de expertos terminada'
>>>>
>>>> def task_publicar_expertos(nombre_topico):
>>>>     return 'publicacion de expertos terminada'
>>>>
>>>> dbScheduler = DAL('sqlite://scheduler.db')
>>>> scheduler = Scheduler(dbScheduler, 
>>>> tasks={'task_iniciar_descarga_tweets':task_iniciar_descarga_tweets,
>>>>                                           
>>>> 'task_iniciar_identificacion_expertos':task_iniciar_identificacion_expertos,
>>>>                                           
>>>> 'task_publicar_expertos':task_publicar_expertos})
>>>>
>>>>
>>>> And this is my default.py controller (part of it)
>>>>
>>>> @auth.requires_login()
>>>> def onCreateTopico(form):
>>>>     row_task_iniciar_identificacion = 
>>>> scheduler.queue_task('task_iniciar_identificacion_expertos', 
>>>> pvars={'nombre_topico':form.vars.nombre}, 
>>>> start_time=datetime.datetime.combine(form.vars.fecha_inicio_identificacion,
>>>>  
>>>> datetime.time.min), 
>>>> stop_time=datetime.datetime.combine(form.vars.fecha_fin_identificacion, 
>>>> datetime.time.min), retry_failed=3)
>>>>
>>>>     row_task_iniciar_publicacion = 
>>>> scheduler.queue_task('task_publicar_expertos', 
>>>> pvars={'nombre_topico':form.vars.nombre}, 
>>>> start_time=datetime.datetime.combine(form.vars.fecha_fin_identificacion, 
>>>> datetime.time.min), retry_failed=3)
>>>>     
>>>>     db(db.topicos.id==form.vars.id
>>>> ).update(id_scheduler_task_identificacion_expertos=
>>>> row_task_iniciar_identificacion.id, 
>>>> id_scheduler_task_publicacion_expertos=row_task_iniciar_publicacion.id)
>>>>     db.commit()
>>>>
>>>> For instance, if I queue the task "task_iniciar_identificacion_expertos" 
>>>> with a future start_time the worker executes this task inmediately, how 
>>>> can 
>>>> I set the worker to execute this task in the future?
>>>>
>>>> Thank you!
>>>>
>>>

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