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Posted to jira@kafka.apache.org by "Guozhang Wang (Jira)" <ji...@apache.org> on 2020/11/16 18:44:00 UTC
[jira] [Updated] (KAFKA-10721) Rewrite topology to allow for
overlapping unequal topic subscriptions
[ https://issues.apache.org/jira/browse/KAFKA-10721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guozhang Wang updated KAFKA-10721:
----------------------------------
Labels: newbie++ (was: )
> Rewrite topology to allow for overlapping unequal topic subscriptions
> ---------------------------------------------------------------------
>
> Key: KAFKA-10721
> URL: https://issues.apache.org/jira/browse/KAFKA-10721
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: A. Sophie Blee-Goldman
> Priority: Minor
> Labels: newbie++
>
> Minor followup improvement to KAFKA-6687 in which we rewrite the topology to make it possible for a user to subscribe multiple KStream/KTables to the same topic or identical set of topics. We could further extend this to make it possible for multiple KStream/KTables to be subscribed to overlapping but not identical sets of topics, ie
> {code:java}
> KStream streamA = builder.stream("topic");
> KStream streamB = builder.stream("topic, "other-topic"); {code}
> One way to do this would be to break up multiple-topic source nodes into multiple single-topic sources that get merged together in the child node.
> See https://github.com/apache/kafka/pull/9582/files#diff-ac1bf2b23b80784dec20b00fdc42f2df7e5a5133d6c68978fa44aea11e950c3aR347-R349
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