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From "Bernal, Marcos" <marcos.ber...@sky.uk>
Subject Mitigating impact on connected producers and consumers when restarting broker node
Date Tue, 16 May 2017 11:19:13 GMT

We've got a Kafka cluster, with 4 brokers, a few hundred topics, 20-50 consumers and
10-15 producers.

Often we've got to do changes on the cluster config and we do rolling restarts, with controlled
shutdowns. However, our consumers and producers see a big impact when:

- The broker is shutting down
- The broker joins the cluster again
- The cluster does a rebalance

The type of exceptions the clients are producing are in the range of:


My question is, is there a way to mitigate the impact, or is it considered the normal way
kafka and the clients operate?

Is any change in the topology of the cluster (partition leader and ISRs) supposed to cause
these exceptions?

Thank you,

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