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https://issues.apache.org/jira/browse/FLINK-3582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15294806#comment-15294806
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Aljoscha Krettek commented on FLINK-3582:
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This is addressed in this PR: https://github.com/apache/flink/pull/1957/commits
> Add Iterator over State for All Keys in Partitioned State
> ---------------------------------------------------------
>
> Key: FLINK-3582
> URL: https://issues.apache.org/jira/browse/FLINK-3582
> Project: Flink
> Issue Type: Sub-task
> Components: Streaming
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
>
> Having a non-keyed trigger requires that we have a way to iterate over the
> state for all keys, so that we can emit window results.
> This should only be for internal use, but maybe users also want to iterate
> over the state for all keys.
> As a corollary, we then also need a way to drop state for all keys at the
> same time.
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