[ 
https://issues.apache.org/jira/browse/FLINK-4460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15872353#comment-15872353
 ] 

ASF GitHub Bot commented on FLINK-4460:
---------------------------------------

Github user chenqin commented on the issue:

    https://github.com/apache/flink/pull/2982
  
    @aljoscha Looks good to me 👍
    
    I briefly looked at your git branch, a minor comment would be adding 
comments to `sideOutputLateData` so user get better idea when they opt-in to 
late arriving event stream. 
    
    Initial late arriving event is decided by comparing watermark & eventTime, 
do you think there is a need to allow user pass a kinda `Evaluator` and enable 
user sideOutput any kind of sideOutputs?
    
    `window.sideOutput(OutputTag<IN>, Evaluator)`
    
    `interface Evaluator{ MergedWindows, key, watermark}`
    
    - Regarding `split` `select`, I think there is a chance of consolidate 
select and build upon `OutputTag`, but might be out of this PR's scope.
    - Regarding to `WindowStream`, I am a bit confused to figure out  if I use 
`allowedlateness` and  `sideOutputLateData` at same time.
    
    Thanks,
    Chen
    
    



> Side Outputs in Flink
> ---------------------
>
>                 Key: FLINK-4460
>                 URL: https://issues.apache.org/jira/browse/FLINK-4460
>             Project: Flink
>          Issue Type: New Feature
>          Components: Core, DataStream API
>    Affects Versions: 1.2.0, 1.1.3
>            Reporter: Chen Qin
>            Assignee: Chen Qin
>              Labels: latearrivingevents, sideoutput
>
> https://docs.google.com/document/d/1vg1gpR8JL4dM07Yu4NyerQhhVvBlde5qdqnuJv4LcV4/edit?usp=sharing



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Reply via email to