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https://issues.apache.org/jira/browse/FLINK-8364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360389#comment-16360389
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ASF GitHub Bot commented on FLINK-8364:
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Github user bowenli86 commented on the issue:
https://github.com/apache/flink/pull/5356
@StefanRRichter I think how `null` is handled is one major benefit, not
all. Another benefit is that `iterator()` is more intuitive in traversing all
values. For example, this change makes ListState more similar to how MapState
handles traversing - In MapState, it has `values()` and `iterator()` that both
traverse entries in the map.
> Add iterator() to ListState which returns empty iterator when it has no value
> -----------------------------------------------------------------------------
>
> Key: FLINK-8364
> URL: https://issues.apache.org/jira/browse/FLINK-8364
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.4.0
> Reporter: Bowen Li
> Assignee: Bowen Li
> Priority: Major
> Fix For: 1.5.0
>
>
> Add iterator() to ListState which returns empty iterator when it has no value
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