Yes I think exposing ineligible topics would be useful as well. The
controller also tracks this ineligible state for replicas. Would that be
useful to expose as well?

In that case, we'd be up to four new metrics:
* topics pending delete
* replicas pending delete
* ineligible topics
* ineligible replicas

Thoughts?


On Wed, Aug 7, 2019 at 5:16 PM Jason Gustafson <ja...@confluent.io> wrote:

> Thanks for the KIP. This is useful. The controller also maintains a set for
> topics which are awaiting deletion, but currently ineligible. A topic which
> is undergoing reassignment, for example, is ineligible for deletion. Would
> it make sense to have a metric for this as well?
>
> -Jason
>
> On Wed, Aug 7, 2019 at 1:52 PM David Arthur <mum...@gmail.com> wrote:
>
> > Updated the KIP with a count of replicas awaiting deletion.
> >
> > On Wed, Aug 7, 2019 at 9:37 AM David Arthur <mum...@gmail.com> wrote:
> >
> > > Thanks for the feedback, Stan. That's a good point about the partition
> > > count -- I'll poke around and see if I can surface this value in the
> > > Controller.
> > >
> > > On Tue, Aug 6, 2019 at 8:13 AM Stanislav Kozlovski <
> > stanis...@confluent.io>
> > > wrote:
> > >
> > >> Thanks for the KIP David,
> > >>
> > >> As you mentioned in the KIP - "when a large number of topics
> > (partitions,
> > >> really) are deleted at once, it can take significant time for the
> > >> Controller to process everything.
> > >> In that sense, does it make sense to have the metric expose the number
> > of
> > >> partitions that are pending deletion, as opposed to topics? Perhaps
> even
> > >> both?
> > >> My reasoning is that this metric alone wouldn't say much if we had one
> > >> topic with 1000 partitions versus a topic with 1 partition
> > >>
> > >> On Mon, Aug 5, 2019 at 8:19 PM Harsha Chintalapani <ka...@harsha.io>
> > >> wrote:
> > >>
> > >> > Thanks for the KIP.  Its useful metric to have.  LGTM.
> > >> > -Harsha
> > >> >
> > >> >
> > >> > On Mon, Aug 05, 2019 at 11:24 AM, David Arthur <
> > davidart...@apache.org>
> > >> > wrote:
> > >> >
> > >> > > Hello all, I'd like to start a discussion for
> > >> > > https://cwiki.apache.org/confluence/display/KAFKA/
> > >> > > KIP-503%3A+Add+metric+for+number+of+topics+marked+for+deletion
> > >> > >
> > >> > > Thanks!
> > >> > > David
> > >> > >
> > >> >
> > >>
> > >>
> > >> --
> > >> Best,
> > >> Stanislav
> > >>
> > >
> > >
> > > --
> > > David Arthur
> > >
> >
> >
> > --
> > David Arthur
> >
>


-- 
David Arthur

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