Hi Vahid,
Interesting idea.
It seems like if you're using the AdminClient APIs programmatically, you can
just do the filtering yourself in a more flexible way than what we could
provide.
On the other hand, if you're using the ./bin/consumer-groups.sh command-line
tool, why not use grep or a similar tool to filter the output? Maybe there is
some additional functionality in supporting regexes in the command-line tool,
but it also seems like it might be kind of complex as well. Do you have some
examples where having regex support int the tool would be much easier than the
traditional way of piping the output to grep, awk, and sed?
best,
Colin
On Thu, Aug 2, 2018, at 14:23, Vahid S Hashemian wrote:
> Hi all,
>
> A requirement has been raised by a colleague and I wanted to see if there
> is any interest in the community in adding the functionality to Apache
> Kafka.
>
> ConsumerGroupCommand tool in describe ('--describe' or '--describe
> --offsets') mode currently lists all topics the group has consumed from
> and all consumers with assigned partitions for a single group.
> The idea is to allow filtering of topics, consumers (client ids), and even
> groups using regular expressions. This will allow the tool to handle use
> cases such as
> What's the status of a particular consumer (or consumers) in all the
> groups they are consuming from? (for example to check if they are lagging
> behind in all groups)
> What consumer groups are consuming from a topic (or topics) and what's the
> lag for each group?
> Limit the existing result to the topics/consumers of interest (for groups
> with several topics/consumers)
> ...
>
> This would potentially lead to enhancing the AdminClient API as well.
>
> If the community also sees a value in this, I could start drafting a KIP.
>
> Thanks for your feedback.
> --Vahid
>
