You can still specify task_ids, it's optional.
> On 9 May 2018, at 20:15, 刘松(Brain++组) <liuson...@megvii.com> wrote: > > Since that it might have multiple upstream tasks, so which task to specify? > Or you change the xcom syntax to be global? > > > > > On Wed, May 9, 2018 at 6:13 PM +0800, "刘松(Brain++组)" > <liuson...@megvii.com<mailto:liuson...@megvii.com>> wrote: > > What is the magic to remove the task id ? > > > > > On Wed, May 9, 2018 at 3:38 PM +0800, "Beau Barker" > <beauinmelbou...@gmail.com<mailto:beauinmelbou...@gmail.com>> wrote: > > > Use xcom for communication between tasks. > > In the upcoming version 1.10 there's no need to specify task_ids for xcom. > > You can simply say: > self.xcom_pull(context, key='name') > > >> On 9 May 2018, at 17:22, Song Liu wrote: >> >> Hi, >> >> For the cross-task communication, there are two options: >> - xcom >> - variable >> >> if I have make sure the key of variable is global unique (such uuid), is >> there any other limitations or cons for using variable instead of xcom ? >> since that xcom should specify the task_id which is used not very convenient >> compared with variable. >> >> Any information is appreciated. >> >> Thanks, >> Song >