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https://issues.apache.org/jira/browse/FLINK-26372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17561020#comment-17561020
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Roman Khachatryan commented on FLINK-26372:
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No problem [~Feifan Wang].
I mean that currently, TM uses cluster configuration to check whether the
changelog is enabled or not (if disabled, it creates a no-op changelogStorage).
StreamTask, however, will read TaskConfiguration (populated from "job
configuration" on JM), and wrap the backend if necessary.
So the 1st step is to make TM use TaskConfiguration for that, not cluster
configuration.
> Allow to configure Changelog Storage per program
> ------------------------------------------------
>
> Key: FLINK-26372
> URL: https://issues.apache.org/jira/browse/FLINK-26372
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Configuration, Runtime / State Backends
> Affects Versions: 1.15.0
> Reporter: Roman Khachatryan
> Assignee: Feifan Wang
> Priority: Major
> Fix For: 1.16.0
>
>
> It's currently possible to override state.backend.changelog.enabled per job,
> but it's not possible to override Changelog storage settings (i.e. writer
> settings).
> There should be 1) an API and 2) runtime support for that.
> See this
> [discussion|https://github.com/apache/flink/pull/16341#discussion_r663749681]
> and the corresponding
> [TODO|https://github.com/apache/flink/pull/16341/files#diff-2c21555dcab689ec27c0ab981852a2bfa787695fb2fe04b24c22b89c63d98b73R680].
>
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