[
https://issues.apache.org/jira/browse/KAFKA-12453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17331635#comment-17331635
]
Matthias J. Sax commented on KAFKA-12453:
-----------------------------------------
Thanks for asking. In general 3rd parties hold the copyright. But as a
Confluent employee, I can tell you that you don't need to worry about it for
this case – take whatever is helpful.
For testing, check out
[https://cwiki.apache.org/confluence/display/KAFKA/Contributing+Website+Documentation+Changes]
and
[https://cwiki.apache.org/confluence/display/KAFKA/Setup+Kafka+Website+on+Local+Apache+Server]
.
> Guidance on whether a topology is eligible for optimisation
> -----------------------------------------------------------
>
> Key: KAFKA-12453
> URL: https://issues.apache.org/jira/browse/KAFKA-12453
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Patrick O'Keeffe
> Priority: Major
>
> Since the introduction of KStream.toTable() in Kafka 2.6.x, the decision
> about whether a topology is eligible for optimisation is no longer a simple
> one, and is related to whether toTable() operations are preceded by key
> changing operators.
> This decision requires expert level knowledge, and there are serious
> implications associated with getting it wrong in terms of fault tolerance
> Some ideas spring to mind around how to guide developers to make the correct
> decision:
> # Topology.describe() could indicate whether this topology is eligible for
> optimisation
> # Topologies could be automatically optimised - note this may have an impact
> at deployment time, in that an application reset may be required. The
> developer would need to made aware of this and adjust the deployment plan
> accordingly
>
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
