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From Guozhang Wang <wangg...@gmail.com>
Subject Re: Customizing initial consumer group rebalance delay
Date Mon, 02 Jul 2018 04:52:46 GMT
Hello Boyang,

Your observation is valid, in fact after KIP-134 is merged there are some
discussions about on the voting thread as well, that whether we should
better make it a client config than a global broker-level config.

There are some general ideas grooming to further improve consumer rebalance
protocols, including this, and motivations of KAFKA-7126 / KAFKA-7018 /  as
well. Please stay tuned.


On Sun, Jul 1, 2018 at 6:45 PM, Boyang Chen <bchen11@outlook.com> wrote:

> Hey there,
> I have a question regarding KIP-134<https://cwiki.apache.
> org/confluence/display/KAFKA/KIP-134%3A+Delay+initial+
> consumer+group+rebalance>. Basically this config `group.initial.rebalance.
> delay.ms` is set on broker side to delay the initial rebalance of
> consumer groups. For certain consumers, we would like to have customized
> group initial rebalance delay, since for some testing classes the time to
> bring up hosts (just 1) is minimal. We could code this delay in the first
> member join request, so that broker could start rebalancing faster than
> cluster level config. Does that make sense?
> Best,
> Boyang

-- Guozhang

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