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https://issues.apache.org/jira/browse/FLINK-33144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wencong Liu updated FLINK-33144:
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Description: FLIP-357 has decided to deprecate the Iteration API of
DataStream and remove it completely in the next major version. In the future,
if other modules in the Flink repository require the use of the Iteration API,
we can consider extracting all Iteration implementations from the Flink ML
repository into an independent module. (was: Currently, the Iteration API of
DataStream is incomplete. For instance, it lacks support for iteration in sync
mode and exactly once semantics. Additionally, it does not offer the ability to
set iteration termination conditions. As a result, it's hard for developers to
build an iteration pipeline by DataStream in the practical applications such as
machine learning.
[FLIP-176: Unified Iteration to Support
Algorithms|https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=184615300]
has introduced a unified iteration library in the Flink ML repository. This
library addresses all the issues present in the Iteration API of DataStream and
could provide solution for all the iteration use-cases. However, maintaining
two separate implementations of iteration in both the Flink repository and the
Flink ML repository would introduce unnecessary complexity and make it
difficult to maintain the Iteration API.
FLIP-357 has decided to deprecate the Iteration API of DataStream and remove it
completely in the next major version. In the future, if other modules in the
Flink repository require the use of the Iteration API, we can consider
extracting all Iteration implementations from the Flink ML repository into an
independent module.)
> Deprecate Iteration API in DataStream
> -------------------------------------
>
> Key: FLINK-33144
> URL: https://issues.apache.org/jira/browse/FLINK-33144
> Project: Flink
> Issue Type: Technical Debt
> Components: API / DataStream
> Affects Versions: 1.19.0
> Reporter: Wencong Liu
> Priority: Major
> Fix For: 1.19.0
>
>
> FLIP-357 has decided to deprecate the Iteration API of DataStream and remove
> it completely in the next major version. In the future, if other modules in
> the Flink repository require the use of the Iteration API, we can consider
> extracting all Iteration implementations from the Flink ML repository into an
> independent module.
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