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https://issues.apache.org/jira/browse/KAFKA-6699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16411758#comment-16411758
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Matthias J. Sax commented on KAFKA-6699:
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If replication factor is 2, can you even write to the topics if one broker is
down? What is your ISR and Producer ack setting? What about unclean leader
election? With a 2 broker cluster, you might get inconsistent writes if one
broker goes down, depending on your overall configs.
> When one of two Kafka nodes are dead, streaming API cannot handle messaging
> ---------------------------------------------------------------------------
>
> Key: KAFKA-6699
> URL: https://issues.apache.org/jira/browse/KAFKA-6699
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.11.0.2
> Reporter: Seweryn Habdank-Wojewodzki
> Priority: Major
>
> Dears,
> I am observing quite often, when Kafka Broker is partly dead(*), then
> application, which uses streaming API are doing nothing.
> (*) Partly dead in my case it means that one of two Kafka nodes are out of
> order.
> Especially when disk is full on one machine, then Broker is going in some
> strange state, where streaming API goes vacations. It seems like regular
> producer/consumer API has no problem in such a case.
> Can you have a look on that matter?
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