Re: when to expand cluster

Thanks. What influence does it have for consumers and producers when
partition number is more than broker number, which means at least one
broker serves two partitions for one topic ? performance wise.

Peter Bukowinski <pmbuko@gmail.com> 于2020年2月26日周三 下午11:02写道：

> Disk usage is one reason to expand. Another reason is if you need more
> ingest or output throughout for your topic data. If your producers aren't
> able to send data to kafka fast enough or your consumers are lagging, you
> might benefit from more brokers and more partitions.
>
> -- Peter
>
> > On Feb 26, 2020, at 12:56 AM, 张祥 <xiangzhang1128@gmail.com> wrote:
> >
> > In documentation, it is described how to expand cluster:
> >
> https://kafka.apache.org/20/documentation.html#basic_ops_cluster_expansion
> .
> > But I am wondering what the criteria for expand is. I can only think of
> > disk usage threshold. For example, suppose several disk usage exceed 80%.
> > Is this correct and is there more ?
>