flink-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jark Wu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7446) Support to define an existing field as the rowtime field for TableSource
Date Wed, 23 Aug 2017 02:43:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16137794#comment-16137794
] 

Jark Wu commented on FLINK-7446:
--------------------------------

In the long run, we can provide a new interface called {{DefinedWatermark}}, which has two
methods {{getRowtimeAttribute}} (can only be an existing field) and {{getWatermarkGenerator}}.
The {{DefinedRowtimeAttribute}} will be marked deprecated. In addition, we can provide some
built-in watermark generators, such as {{AscendingTimestamp}}, {{BoundedOutOfOrderness}}.
What do you think ? 

> Support to define an existing field as the rowtime field for TableSource
> ------------------------------------------------------------------------
>
>                 Key: FLINK-7446
>                 URL: https://issues.apache.org/jira/browse/FLINK-7446
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Jark Wu
>            Assignee: Jark Wu
>
> Currently {{DefinedRowtimeAttribute}} can define an appended rowtime field for a {{TableSource}}.
But it would be helpful if we can support to define an existing field as the rowtime field.
Just like registering a DataStream, the rowtime field can be appended but also can replace
an existing field.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message