GitHub user dguy opened a pull request:
https://github.com/apache/kafka/pull/2758
KAFKA-4925: delay initial rebalance of consumer group [WiP]
Add new broker config, `group.initial.rebalance.delay.ms`, with a default
of 3 seconds.
When a consumer creates a new group, set the group's state to
InitialRebalance and delay the rebalance until
`min(group.initial.rebalance.delay.ms, rebalanceTimeout)`. As other members
join the group further delay the rebalance by
`min(group.initial.rebalance.delay.ms, remainingRebalanceTimeout)`. Once
`rebalanceTimeout` is hit or no new members join the group within the delay,
complete the rebalance.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dguy/kafka kafka-4925
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2758.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2758
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commit 26acb81e51c3485c01e2d4f3b5fea50afa957574
Author: Damian Guy <damian....@gmail.com>
Date: 2017-03-29T13:05:59Z
delay initial rebalance of consumer group
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