[jira] [Updated] (FLINK-12665) Introduce MiniBatchIntervalInferRule and watermark assigner operators

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

     [ https://issues.apache.org/jira/browse/FLINK-12665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-12665:
-----------------------------------
    Labels: pull-request-available  (was: )

>  Introduce MiniBatchIntervalInferRule and watermark assigner operators
> ----------------------------------------------------------------------
>
>                 Key: FLINK-12665
>                 URL: https://issues.apache.org/jira/browse/FLINK-12665
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner, Table SQL / Runtime
>            Reporter: godfrey he
>            Assignee: godfrey he
>            Priority: Major
>              Labels: pull-request-available
>
> This issue aims to introduce MiniBatchIntervalInferRule to infer the mini-batch interval of watermark assigner, This rule could handle the following two kinds of operator:
> 1. supports operators which supports mini-batch and does not require watermark, e.g. group aggregate. In this case, {{StreamExecWatermarkAssigner}} with Protime mode will be created if not exist, and the interval value will be set as {{SQL_EXEC_MINIBATCH_ALLOW_LATENCY}}.
> 2. supports operators which requires watermark, e.g. window join, window aggregate. In this case, {{StreamExecWatermarkAssigner}} already exists, and its MiniBatchIntervalTrait will be updated as the merged intervals from its outputs.
> Currently, mini-batched window aggregate is not supported, and will be introduced later.
> this issue also introduces watermark assigner operators, including:
> 1. {{WatermarkAssignerOperator}}, that extracts timestamps from stream elements and generates periodic watermarks.
> 2. {{MiniBatchedWatermarkAssignerOperator}}, that extracts timestamps from stream elements and generates watermarks with specified emit latency.
> 3. {{MiniBatchAssignerOperator}}, that emits mini-batch marker in a given period.



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