[
https://issues.apache.org/jira/browse/KAFKA-2017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14958100#comment-14958100
]
Ashish K Singh commented on KAFKA-2017:
---------------------------------------
I agree with [~guozhang] that if we are not expecting group membership changes
to be write-heavy, ZK is the way to go for persisting coordinator state. One of
the reasons of moving offsets form ZK to Kafka topic, other than the ones
already mentioned, was consumers needed to be aware of zookeeper. However, that
is not a concern if we choose to go with ZK here, correct me if I am wrong here.
> Persist Coordinator State for Coordinator Failover
> --------------------------------------------------
>
> Key: KAFKA-2017
> URL: https://issues.apache.org/jira/browse/KAFKA-2017
> Project: Kafka
> Issue Type: Sub-task
> Components: consumer
> Affects Versions: 0.9.0.0
> Reporter: Onur Karaman
> Assignee: Guozhang Wang
> Fix For: 0.9.0.0
>
> Attachments: KAFKA-2017.patch, KAFKA-2017_2015-05-20_09:13:39.patch,
> KAFKA-2017_2015-05-21_19:02:47.patch
>
>
> When a coordinator fails, the group membership protocol tries to failover to
> a new coordinator without forcing all the consumers rejoin their groups. This
> is possible if the coordinator persists its state so that the state can be
> transferred during coordinator failover. This state consists of most of the
> information in GroupRegistry and ConsumerRegistry.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
