Hi, Jeff,

Thanks for the KIP. A couple of comments.

1. The comment says that  KIP-915 does not bump the version of
TransactionLogValue.json, but the schema seems to bump the version from 0
to 1.

2. How do we support downgrade when a field is removed? Does it require the
removed field to have a default?

Thanks,

Jun


On Thu, Mar 30, 2023 at 6:49 AM Ismael Juma <ism...@juma.me.uk> wrote:

> Hi,
>
> I'm late to this conversation, but it's a bit odd to backport the flexible
> versions change to "3.0.3, 3.1.3, 3.2.4, 3.3.3, and 3.4.1" unless we intend
> to release an update for each of these. So, I suggest that either we commit
> to releasing an update for each of these versions or we reduce the set of
> versions we backport the change to.
>
> Ismael
>
> On Wed, Mar 15, 2023 at 4:57 PM Jeff Kim <jeff....@confluent.io.invalid>
> wrote:
>
> > Hi folks,
> >
> > I would like to start a discussion thread for KIP-915: Next Gen Group
> > Coordinator Downgrade Path which proposes the downgrade design for the
> new
> > group coordinator introduced in KIP-848
> > <
> >
> https://cwiki.apache.org/confluence/display/KAFKA/KIP-848%3A+The+Next+Generation+of+the+Consumer+Rebalance+Protocol
> > >
> > .
> >
> > KIP:
> >
> >
> https://cwiki.apache.org/confluence/display/KAFKA/KIP-915%3A+Next+Gen+Group+Coordinator+Downgrade+Path
> >
> > Thanks,
> > Jeff
> >
>

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