Hi all,

I’d like to manually bump this thread.

Best Regards,
Jiunn-Yang

黃竣陽 <[email protected]> 於 2025年9月29日 週一 下午7:49寫道:

> Hi all,
>
> I’d like to manually bump this thread. If anyone has feedback, please let
> me know.
>
> Best Regards,
> Jiunn-Yang
>
> > 黃竣陽 <[email protected]> 於 2025年8月23日 下午4:24 寫道:
> >
> > Hello chia,
> >
> > Thanks for the reply, I have addressed all the comments.
> >
> > Best Regards,
> > Jiunn-Yang
> >
> >> Chia-Ping Tsai <[email protected]> 於 2025年8月22日 中午12:20 寫道:
> >>
> >> hi Jiunn-Yang
> >>
> >>
> >> chia_03
> >> If the configuration is public, the package needs the package-info.
> >>
> >> chia_04
> >> Additionally, the package includes some non-public stuff, which should
> be moved to another package. For example, StripedReplicaPlacer.
> >>
> >> chia_05
> >> Please list the classes needing the UNSTABLE flag
> >>
> >> Best,
> >> Chia-Ping
> >>
> >>
> >>> 黃竣陽 <[email protected]> 於 2025年8月20日 晚上8:29 寫道:
> >>>
> >>> Hello chia, peng,
> >>>
> >>> I completely agree that Apache Kafka places a strong emphasis on
> compatibility.
> >>> I believe the ReplicaPlacer plugin is primarily intended for advanced
> users—most
> >>> common users are unlikely to implement their own plugin. Therefore,
> using an
> >>> UNSTABLE or internal configuration is a trade-off we need to consider.
> >>>
> >>> If we make this configuration public and mark its interface as
> UNSTABLE, the
> >>> advantage is that more users will be able to use it if they are
> comfortable with the API’s instability.
> >>> The downside is that this would be the first UNSTABLE API exposed
> directly to users.
> >>>
> >>> Alternatively, if we make the configuration internal, the advantage is
> that we are not required to
> >>> maintain compatibility since it is not exposed to users. However, the
> downside is that most users would
> >>> not be aware of the configuration at all.
> >>>
> >>> On balance, I think making this configuration public (while clearly
> marking it as UNSTABLE) will provide
> >>> more opportunities to gather feedback from users and improve the
> interface over time. Therefore, I will
> >>> update this KIP to make the configuration public and mark it as
> UNSTABLE.
> >>>
> >>> Best Regards,
> >>> Jiunn-Yang
> >>>
> >>>> peng <[email protected]> 於 2025年8月20日 下午4:13 寫道:
> >>>> +1
> >>>> best regards
> >>>> Chia-Ping Tsai <[email protected]> 于 2025年8月20日周三 下午3:46写道:
> >>>>> I really like the idea of offering more flexible and powerful
> assignment
> >>>>> policies. However, maintaining such implementations could become an
> >>>>> overhead for the community. This is especially important because
> Apache
> >>>>> Kafka places a strong emphasis on compatibility.
> >>>>> The value of this KIP lies in opening the door for advanced
> developers to
> >>>>> deploy custom assignments without modifying the source code.
> >>>>> With respect to this KIP, perhaps we could expose a public
> configuration
> >>>>> backed by UNSTABLE APIs. This approach would give us the flexibility
> to
> >>>>> adjust the APIs in minor releases
> >>>>> Best,
> >>>>> Chia-Ping
> >>>>>> On 2025/08/18 02:21:15 peng wrote:
> >>>>>>> I think making `ReplicaPlacer` configurable is a good strategy. We
> can
> >>>>>>> integrate KIP-1194: Optimize Replica Assignment for Broker Load
> Balance
> >>>>> in
> >>>>>> Uneven Rack Configurations into it, allowing users to choose
> between the
> >>>>>> current `StripedReplicaPlacer` approach or the
> `WeightedReplicaPlacer`
> >>>>>> mentioned in KIP-1194.
> >>>>>> Perhaps the replica reassignment algorithm could also be made
> >>>>> configurable,
> >>>>>> enabling users to select solutions like KIP-1151: Minimal movement
> >>>>> replica
> >>>>>> balancing algorithm through configuration.
> >>>>>> 黃竣陽 <[email protected]> 于 2025年8月6日周三 下午8:03写道:
> >>>>>>> Hello chia,
> >>>>>>> Thanks for the reply,
> >>>>>>> chia_00, chia_01, chia_02: I have updated the KIP based on your
> >>>>> comments.
> >>>>>>> Best Regards,
> >>>>>>> Jiunn-Yang
> >>>>>>>> Chia-Ping Tsai <[email protected]> 於 2025年8月6日 凌晨12:18 寫道:
> >>>>>>>> hi Jiunn-Yang
> >>>>>>>> chia_00:
> >>>>>>>> Could you please add more alternatives? For example, users could
> use
> >>>>> the
> >>>>>>>> admin to reassign partitions after the topics are created, or
> >>>>> specify the
> >>>>>>>> assignments directly when creating the topics
> >>>>>>>> chia_01:
> >>>>>>>> should we consider making `ReplicaPlacer` configurable?
> >>>>>>>> chia_02:
> >>>>>>>> Could you please enrice the documentation to remind users that
> this
> >>>>>>>> configuration is internal, and clarify the specific use cases
> where
> >>>>> it
> >>>>>>>> might be relevant?
> >>>>>>>> Best,
> >>>>>>>> Chia-Ping
> >>>>>>>> 黃竣陽 <[email protected]> 於 2025年8月5日 週二 下午11:24寫道:
> >>>>>>>>> Hello everyone,
> >>>>>>>>> I would like to start a discussion on KIP-1203: Allow to
> configure
> >>>>>>> custom
> >>>>>>>>> `ReplicaPlacer` implementation
> >>>>>>>>> <https://cwiki.apache.org/confluence/x/dxFJFg>
> >>>>>>>>> This proposal introduces a new internal configuration,
> >>>>>>>>> replica.placer.class.name, which
> >>>>>>>>> allows users to specify a custom implementation of ReplicaPlacer.
> >>>>>>>>> Best regards,
> >>>>>>>>> Jiunn-Yang
> >
>
>

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