[jira] [Commented] (FLINK-31679) [Flink][UI] Show data exchange type on web ui

["Wencong Liu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-31679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17707512#comment-17707512 ] 

Wencong Liu commented on FLINK-31679:
-------------------------------------

Thanks [~huwh]  for proposing this ticket. It is meaningful to display the actual ResultPartitionType used for connecting upstream and downstream operators on the Web UI. However, there are currently many types of ResultPartitionType, and exposing specific names to users would make it difficult for them to understand related behaviors. 

My option is that the consuming behavior of data exchange can be described by the ConsumingConstraint enum in ResultPartitionType.java :

 
{code:java}
private enum ConsumingConstraint {
    /** Upstream must be finished before downstream consume. */
    BLOCKING,
    /** Downstream can consume while upstream is running. */
    CAN_BE_PIPELINED,
    /** Downstream must consume while upstream is running. */
    MUST_BE_PIPELINED
} {code}
 

Perhaps displaying BLOCKING/CAN_BE_PIPELINED/MUST_BE_PIPELINED rather than the ResultPartitionType on the web UI would be more friendly for users to understand and devs to troubleshoot bugs. It would also decouple it from many ResultPartitionTypes. 

Of course, these all require further discussion:). cc [~Weijie Guo] [~xtsong] 

> [Flink][UI] Show data exchange type on web ui
> ---------------------------------------------
>
>                 Key: FLINK-31679
>                 URL: https://issues.apache.org/jira/browse/FLINK-31679
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Web Frontend
>    Affects Versions: 1.18.0
>            Reporter: Weihua Hu
>            Priority: Major
>
> Flink supports multiple data exchange types (ResultPartitionType), which subject to multiple parameters, such as whether job is streaming or batch.
> I think display the data exchange types on the UI would be helpful.



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