[jira] [Commented] (AIRFLOW-3958) Support list type as upstream in helper.chain

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AIRFLOW-3958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16795529#comment-16795529 ] 

ASF GitHub Bot commented on AIRFLOW-3958:
-----------------------------------------

zhongjiajie commented on pull request #4779: [AIRFLOW-3958] Support list tasks as upstream in chain
URL: https://github.com/apache/airflow/pull/4779
 
 
   
 
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


> Support list type as upstream in helper.chain
> ---------------------------------------------
>
>                 Key: AIRFLOW-3958
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3958
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: utils
>    Affects Versions: 1.10.2
>            Reporter: zhongjiajie
>            Assignee: zhongjiajie
>            Priority: Major
>              Labels: patch
>             Fix For: 1.10.3
>
>
> For now on, `airflow.utils.helpers.chain` only support list as downstream, but not upstream. This ticket is to support list as upstream.
> Only support
> {code:java}
> task_1 --> task_2 --> task_3 --> task_4
> or
>                   /--> task_3
> task_1 --> task_2 
>                   \--> task_4{code}
> This improvement to be support
> {code:java}
>                   /--> task_3 \
> task_1 --> task_2              --> task_5
>                   \--> task_4 /
> {code}



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)