[jira] [Commented] (FLINK-26759) Legacy source support waiting for recordWriter to be available

["Martijn Visser (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-26759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17509669#comment-17509669 ] 

Martijn Visser commented on FLINK-26759:
----------------------------------------

I would -1 this, sources should move to the new Source API instead of changing behaviour for (to be) deprecated APIs

> Legacy source support waiting for recordWriter to be available
> --------------------------------------------------------------
>
>                 Key: FLINK-26759
>                 URL: https://issues.apache.org/jira/browse/FLINK-26759
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / Common, Runtime / Checkpointing
>    Affects Versions: 1.13.0, 1.14.0, 1.15.0
>            Reporter: fanrui
>            Priority: Major
>             Fix For: 1.16.0
>
>
> In order for Unaligned Checkpoint not to be blocked, StreamTask#processInput will check recordWriter.isAvailable(). If not available, the data will not be processed until recordWriter is available.
> The new Source api is compatible with the above logic, but Legacy Source is not compatible with the above logic. When using Unaligned Checkpoint, if the backpressure of Legacy Source is high, the Checkpoint duration of Legacy Source will be very long.
>  
> Since legacy sources are often used in production, can we add logic to wait for recordWriter to be available for legacy source?



--
This message was sent by Atlassian Jira
(v8.20.1#820001)