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https://issues.apache.org/jira/browse/KAFKA-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14066488#comment-14066488
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Todd Palino commented on KAFKA-1476:
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I tend to agree, ~jkreps. We currently have kafka-topics.sh that groups a
number of topic-centric functions in a single command, and I think that's a
good model to continue with. On the consumer side, I can think of the following
things we should be able to do:
List groups
Describe group (should include the hosts in the group)
List topics by group (for a given group, what topics does it consume)
Describe topic by group (for a given group and topic, list partitions, host
owning the partition, and the committed offset)
Set offsets (for a given group and topic, explicitly set the offsets. Should
allow setting to smallest, largest, and custom, which is explicitly setting the
value for each partition)
List groups by topic (given a topic name, what groups consume it)
All of these functions have to work with both Zookeeper and group management
within the brokers (once implemented). I want to know which one the data comes
from as part of the results, but I don't want to have to specify it in advance.
As far as the offset checker goes, I could go either way on that. Ultimately,
it combines information from two different areas (consumer and broker), which
means it doesn't fit cleanly in either one even if we all agree that it's
really a consumer function. I think it's fine if it stays where it is for now.
> Get a list of consumer groups
> -----------------------------
>
> Key: KAFKA-1476
> URL: https://issues.apache.org/jira/browse/KAFKA-1476
> Project: Kafka
> Issue Type: Wish
> Components: tools
> Affects Versions: 0.8.1.1
> Reporter: Ryan Williams
> Labels: newbie
> Fix For: 0.9.0
>
> Attachments: KAFKA-1476.patch
>
>
> It would be useful to have a way to get a list of consumer groups currently
> active via some tool/script that ships with kafka. This would be helpful so
> that the system tools can be explored more easily.
> For example, when running the ConsumerOffsetChecker, it requires a group
> option
> bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --topic test --group
> ?
> But, when just getting started with kafka, using the console producer and
> consumer, it is not clear what value to use for the group option. If a list
> of consumer groups could be listed, then it would be clear what value to use.
> Background:
> http://mail-archives.apache.org/mod_mbox/kafka-users/201405.mbox/%3cCAOq_b1w=slze5jrnakxvak0gu9ctdkpazak1g4dygvqzbsg...@mail.gmail.com%3e
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