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https://issues.apache.org/jira/browse/FLINK-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17336889#comment-17336889
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Flink Jira Bot commented on FLINK-3514:
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This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> Add support for slowly changing streaming broadcast variables
> -------------------------------------------------------------
>
> Key: FLINK-3514
> URL: https://issues.apache.org/jira/browse/FLINK-3514
> Project: Flink
> Issue Type: New Feature
> Components: API / DataStream
> Reporter: Stephan Ewen
> Priority: Major
> Labels: stale-major
>
> With "slow changing inputs", I mean auxiliary data sets that change over
> time. Think about dictionaries, set of rules, etc that are updates at slow
> rates and then applied onto another stream.
> They are a bit like broadcast variables in the DataSet API, but not constant
> over the entire lifetime of the job.
> One can currently approximate this via connected streams:
> {code}
> DataStream<Rule> rules = ...
> DataStream<Event> events = ...
> rules.broadcast().connect(events).flatMap(...);
> {code}
> The disadvantage is that one has no control that the broadcasted "rules"
> input is materialized in the function before the "events" are delivered.
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