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Re: About the difference between xcom and variable


So if without task_id(s), is it equal with variable ?

On 09/05/2018, 6:26 PM, "Beau Barker" <beauinmelbourne@xxxxxxxxx> wrote:

    You can still specify task_ids, it's optional.
    
    
    > On 9 May 2018, at 20:15, 刘松(Brain++组) <liusong02@xxxxxxxxxx> 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)" <liusong02@xxxxxxxxxx<mailto:liusong02@xxxxxxxxxx>> wrote:
    > 
    > What is the magic to remove the task id ?
    > 
    > 
    > 
    > 
    > On Wed, May 9, 2018 at 3:38 PM +0800, "Beau Barker" <beauinmelbourne@xxxxxxxxx<mailto:beauinmelbourne@xxxxxxxxx>> 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
    >