You should already get enough votes if I'm counting correctly (Guozhang, John, Matthias)
On Tue, Apr 7, 2020 at 6:59 PM feyman2009 <feyman2...@aliyun.com.invalid> wrote: > Hi, Boyang&Matthias > I think Matthias's proposal makes sense, but we can use the admin tool > for this scenario as Boyang mentioned or follow up later, so I prefer to > keep this KIP unchanged to minimize the scope. > Calling for vote ~ > > Thanks! > Feyman > > ------------------------------------------------------------------ > 发件人：Boyang Chen <reluctanthero...@gmail.com> > 发送时间：2020年4月8日(星期三) 02:15 > 收件人：dev <dev@kafka.apache.org> > 主 题：Re: 回复：回复：回复：回复：回复：[Vote] KIP-571: Add option to force remove members > in StreamsResetter > > Hey Feyman, > > I think Matthias' suggestion is optional, and we could just use admin tool > to remove single static members as well. > > Boyang > > On Tue, Apr 7, 2020 at 11:00 AM Matthias J. Sax <mj...@apache.org> wrote: > > > > Would you mind to elaborate why we still need that > > > > Sure. > > > > For static memership, the session timeout it usually set quite high. > > This make scaling in an application tricky: if you shut down one > > instance, no rebalance would happen until `session.timeout.ms` hits. > > This is specific to Kafka Streams, because when a Kafka Stream client is > > closed, it does _not_ send a `LeaveGroupRequest`. Hence, the > > corresponding partitions would not be processed for a long time and > > thus, fall back. > > > > Given that each instance will have a unique `instance.id` provided by > > the user, we could allow users to remove the instance they want to > > decommission from the consumer group without the need to wait for > > `session.timeout.ms`. > > > > Hence, it's not an application reset scenario for which one wants to > > remove all members, but a scaling-in scenario. For dynamic membership, > > this issue usually does not occur because the `session.timeout.ms` is > > set to a fairly low value and a rebalance would happen quickly after an > > instance is decommissioned. > > > > Does this make sense? > > > > As said before, we may or may not include this in this KIP. It's up to > > you if you want to address it or not. > > > > > > -Matthias > > > > > > > > On 4/7/20 7:12 AM, feyman2009 wrote: > > > Hi, Matthias > > > Thanks a lot! > > > So you do not plan so support removing a _single static_ member via > > `StreamsResetter`? > > > => > > > Would you mind to elaborate why we still need that if we are > > able to batch remove active members with adminClient? > > > > > > Thanks! > > > > > > Feyman > > > ------------------------------------------------------------------ > > > 发件人：Matthias J. Sax <mj...@apache.org> > > > 发送时间：2020年4月7日(星期二) 08:25 > > > 收件人：dev <dev@kafka.apache.org> > > > 主 题：Re: 回复：回复：回复：回复：[Vote] KIP-571: Add option to force remove members > > in StreamsResetter > > > > > > Overall LGTM. > > > > > > +1 (binding) > > > > > > So you do not plan so support removing a _single static_ member via > > > `StreamsResetter`? We can of course still add this as a follow up but > it > > > might be nice to just add it to this KIP right away. Up to you if you > > > want to include it or not. > > > > > > > > > -Matthias > > > > > > > > > > > > On 3/30/20 8:16 AM, feyman2009 wrote: > > >> Hi, Boyang > > >> Thanks a lot, that make sense, we should not expose member.id in > > the MemberToRemove anymore, I have fixed it in the KIP. > > >> > > >> > > >> Feyman > > >> ------------------------------------------------------------------ > > >> 发件人：Boyang Chen <reluctanthero...@gmail.com> > > >> 发送时间：2020年3月29日(星期日) 01:45 > > >> 收件人：dev <dev@kafka.apache.org>; feyman2009 <feyman2...@aliyun.com> > > >> 主 题：Re: 回复：回复：回复：[Vote] KIP-571: Add option to force remove members in > > StreamsResetter > > >> > > >> Hey Feyman, > > >> > > >> thanks for the update. I assume we would rely entirely on the internal > > changes for `removeMemberFromGroup` by sending a DescribeGroup request > > first. With that in mind, I don't think we need to add member.id to > > MemberToRemove anymore, as it is only facing public where users will only > > configure group.instance.id? > > >> On Fri, Mar 27, 2020 at 5:04 PM feyman2009 > > <feyman2...@aliyun.com.invalid> wrote: > > >> Bump, can anyone kindly take a look at the updated KIP-571? Thanks! > > >> > > >> > > >> ------------------------------------------------------------------ > > >> 发件人：feyman2009 <feyman2...@aliyun.com.INVALID> > > >> 发送时间：2020年3月23日(星期一) 08:51 > > >> 收件人：dev <dev@kafka.apache.org> > > >> 主 题：回复：回复：回复：回复：[Vote] KIP-571: Add option to force remove members in > > StreamsResetter > > >> > > >> Hi, team > > >> I have updated the KIP-571 according to our latest discussion > > results, would you mind to take a look? Thanks! > > >> > > >> Feyman > > >> > > >> > > >> ------------------------------------------------------------------ > > >> 发件人：Boyang Chen <reluctanthero...@gmail.com> > > >> 发送时间：2020年3月19日(星期四) 13:41 > > >> 收件人：dev <dev@kafka.apache.org>; feyman2009 <feyman2...@aliyun.com> > > >> 主 题：Re: 回复：回复：回复：[Vote] KIP-571: Add option to force remove members > in > > StreamsResetter > > >> > > >> Thanks for the insight Feyman. I personally feel adding another admin > > client command is redundant, so picking option 1). The memberInfos struct > > is internal and just used for result reference purposes. I think it could > > still work even we overload with `removeAll` option, if that makes sense. > > >> > > >> Boyang > > >> On Wed, Mar 18, 2020 at 8:51 PM feyman2009 > > <feyman2...@aliyun.com.invalid> wrote: > > >> Hi, team > > >> Before going too far on the KIP update, I would like to hear > your > > opinions about how we would change the interface of AdminClient, the two > > alternatives I could think of are: > > >> 1) Extend adminClient.removeMembersFromConsumerGroup to support > > remove all > > >> As Guochang suggested, we could add some flag param in > > RemoveMembersFromConsumerGroupOptions to indicated the "remove all" > logic. > > >> 2) Add a new API like > > adminClient.removeAllMembersFromConsumerGroup(groupId, options) > > >> > > >> I think 1) will be more compact from the API perspective, but > > looking at the code, I found that the if we are going to remove all, then > > the RemoveMembersFromConsumerGroupResult#memberInfos/memberResult()/all() > > should be changed accordingly, and they seem not that meaningful under > the > > "remove all" scenario. > > >> > > >> A minor thought about the > > adminClient.removeMembersFromConsumerGroup API is: > > >> Looking at some other deleteXX APIs, like deleteTopics, > > deleteRecords, the results contains only a Map<A, Future<B>>, I think > it's > > enough to describe the related results, is it make sense that we may > remove > > memberInfos in RemoveMembersFromConsumerGroupResult ? This KIP has no > > dependency on this if we choose alternative 2) > > >> > > >> Could you advise? Thanks! > > >> > > >> Feyman > > >> > > >> > > >> 送时间：2020年3月15日(星期日) 10:11 > > >> 收件人：dev <dev@kafka.apache.org> > > >> 主 题：回复：回复：回复：回复：[Vote] KIP-571: Add option to force remove members > in > > StreamsResetter > > >> > > >> Hi, all > > >> Thanks a lot for your feedback! > > >> According to the discussion, it seems we don't have some valid > > use cases for removing specific dynamic members, I think it makes sense > to > > encapsulate the "get and delete" logic in adminClient. I will update the > > KIP shortly! > > >> > > >> Thanks! > > >> > > >> Feyman > > >> > > >> > > >> ------------------------------------------------------------------ > > >> 发件人：Boyang Chen <reluctanthero...@gmail.com> > > >> 发送时间：2020年3月14日(星期六) 00:39 > > >> 收件人：dev <dev@kafka.apache.org> > > >> 主 题：Re: 回复：回复：回复：[Vote] KIP-571: Add option to force remove members > > in StreamsResetter > > >> > > >> Thanks Matthias and Guozhang for the feedback. I'm not worrying too > > much > > >> about the member.id exposure as we have done so in a couple of > > areas. As > > >> for the recommended admin client change, I think it makes sense in > an > > >> encapsulation perspective. Maybe I'm still a bit hesitant as we are > > losing > > >> the flexibility of closing only a subset of `dynamic members` > > potentially, > > >> but we could always get back and address it if some user feels > > necessary to > > >> have it. > > >> > > >> My short answer would be, LGTM :) > > >> > > >> Boyang > > >> > > >> On Thu, Mar 12, 2020 at 5:26 PM Guozhang Wang <wangg...@gmail.com> > > wrote: > > >> > > >> > Hi Matthias, > > >> > > > >> > About the AdminClient param API: that's a great point here. I > think > > overall > > >> > if users want to just "remove all members" they should not need to > > first > > >> > get all the member.ids themselves, but instead internally the > admin > > client > > >> > can first issue a describe-group request to get all the > member.ids, > > and > > >> > then use them in the next issued leave-group request, all > > abstracted away > > >> > from the users. With that in mind, maybe in > > >> > RemoveMembersFromConsumerGroupOptions we can just introduce an > > overloaded > > >> > flag param besides "members" that indicate "remove all"? > > >> > > > >> > Guozhang > > >> > > > >> > On Thu, Mar 12, 2020 at 2:59 PM Matthias J. Sax <mj...@apache.org > > > > wrote: > > >> > > > >> > > Feyman, > > >> > > > > >> > > some more comments/questions: > > >> > > > > >> > > The description of `LeaveGroupRequest` is clear but it's unclear > > how > > >> > > `MemberToRemove` should behave. Which parameter is required? > > Which is > > >> > > optional? What is the relationship between both. > > >> > > > > >> > > The `LeaveGroupRequest` description clearly states that > > specifying a > > >> > > `memberId` is optional if the `groupInstanceId` is provided. If > > >> > > `MemberToRemove` applies the same pattern, it must be explicitly > > defined > > >> > > in the KIP (and explained in the JavaDocs of `MemberToRemove`) > > because > > >> > > we cannot expect that an admin-client users knows that > internally > > a > > >> > > `LeaveGroupRequest` is used nor what the semantics of a > > >> > > `LeaveGroupRequest` are. > > >> > > > > >> > > > > >> > > About Admin API: > > >> > > > > >> > > In general, I am also confused that we allow so specify a > > `memberId` at > > >> > > all, because the `memberId` is an internal id that is not really > > exposed > > >> > > to the user. Hence, from a AdminClient point of view, accepting > a > > >> > > `memberId` as input seems questionable to me? Of course, > > `memberId` can > > >> > > be collected via `describeConsumerGroups()` but it will return > the > > >> > > `memberId` of _all_ consumer in the group and thus how would a > > user know > > >> > > which member should be removed for a dynamic group (if an > > individual > > >> > > member should be removed)? > > >> > > > > >> > > Hence, how can any user get to know the `memberId` of an > > individual > > >> > > client in a programtic way? > > >> > > > > >> > > Also I am wondering in general, why the removal of single > dynamic > > member > > >> > > is important? In general, I would expect a short > > `session.timeout` for > > >> > > dynamic groups and thus removing a specific member from the > group > > seems > > >> > > not to be an important feature -- for static groups we expect a > > long > > >> > > `session.timeout` and a user can also identify individual > clients > > via > > >> > > `groupInstandId`, hence the feature makes sense for this case > and > > is > > >> > > straight forward to use. > > >> > > > > >> > > > > >> > > About StreamsResetter: > > >> > > > > >> > > For this case we just say "remove all members" and thus the > > >> > > `describeConsumerGroup` approach works. However, it seems to be > a > > >> > > special case? > > >> > > > > >> > > Or, if we expected that the "remove all members" use case is the > > norm, > > >> > > why can't we make a change admin-client to directly accept a ` > > group.id`? > > >> > > The admin-client can internal first do a `DescribeGroupRequest` > > and > > >> > > afterward corresponding `LeaveGroupRequest` -- i.e., instead of > > building > > >> > > this pattern in `StreamsResetter` we build it directly into > > >> > `AdminClient`. > > >> > > > > >> > > Last, for static group the main use case seems to be to remove > an > > >> > > individual member from the group but this feature is not covered > > by the > > >> > > KIP: I think using `--force` to remove all members makes sense, > > but an > > >> > > important second feature to remove an individual static member > > would > > >> > > require it's own flag to specify a single `group.instance.id`. > > >> > > > > >> > > > > >> > > Thoughts? > > >> > > > > >> > > > > >> > > -Matthias > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > On 3/11/20 8:43 PM, feyman2009 wrote: > > >> > > > Hi, Sophie > > >> > > > For 1) Sorry, I found that my expression is kind of > > misleading, > > >> > > what I actually mean is: "if --force not specified, an exception > > saying > > >> > > there are still active members on broker side will be thrown and > > >> > > suggesting using StreamsResetter with --force", I just updated > > the KIP > > >> > > page. > > >> > > > > > >> > > > For 2) > > >> > > > I may also had some misleading expression previous, to > > clarify > > >> > : > > >> > > > > > >> > > > Also, it's more efficient to just send a single "clear the > > group" > > >> > > request vs sending a LeaveGroup > > >> > > > request for every single member. What do you think? > > >> > > > => the comparison is to send a single "clear the group" > request > > vs > > >> > > sending a "get members" + a "remove members" request since the > > >> > > adminClient.removeMembersFromConsumerGroup support batch > removal. > > We > > >> > > don't need to send lots of leaveGroup requests for every single > > member. > > >> > > > > > >> > > > I can understand your point, but I think we could reuse > > the > > >> > > current > > >> > > > adminClient.removeMembersFromConsumerGroup interface > > effectively with > > >> > > the KIP. > > >> > > > What do you think? > > >> > > > > > >> > > > Thanks! > > >> > > > > > >> > > > Feyman > > >> > > > > > >> > > > > > >> > > > > > ------------------------------------------------------------------ > > >> > > > 发件人：Sophie Blee-Goldman <sop...@confluent.io> > > >> > > > 发送时间：2020年3月10日(星期二) 03:02 > > >> > > > 收件人：dev <dev@kafka.apache.org>; feyman2009 < > > feyman2...@aliyun.com> > > >> > > > 主 题：Re: 回复：回复：[Vote] KIP-571: Add option to force remove > > >> > > members in StreamsResetter > > >> > > > > > >> > > > Hey Feyman, > > >> > > > > > >> > > > 1) Regarding point 2 in your last email, if I understand > > correctly you > > >> > > propose to change > > >> > > > the current behavior of the reset tool when --force is not > > specified, > > >> > > and wait for (up to) > > >> > > > the session timeout for all members to be removed. I'm not > sure > > we > > >> > > should change this, > > >> > > > especially now that we have a better way to handle the case > > when the > > >> > > group is not empty: > > >> > > > we should continue to throw an exception and fail fast, but > can > > print > > >> > > a message suggesting > > >> > > > to use the new --force option to remove remaining group > > members. Why > > >> > > make users wait > > >> > > > for the session timeout when we've just added a new feature > > that means > > >> > > they don't have to? > > >> > > > > > >> > > > 2) Regarding Matthias' question: > > >> > > > > > >> > > >> I am really wondering, if for a static group, we should allow > > users > > >> > > toremove individual members? For a dynamic group this feature > > would not > > >> > > > make much sense IMHO, because the `memberId` is not know by > the > > user. > > >> > > > > > >> > > > I think his point is similar to what I was trying to get at > > earlier, > > >> > > with the proposal to add a new > > >> > > > #removeAllMembers API rather than an API to remove individual > > members > > >> > > according to their > > >> > > > memberId. As he explained, removing based on memberId is > likely > > not > > >> > > that useful in general. > > >> > > > Also, it's not actually what we want to do here; maybe we > > should avoid > > >> > > adding a new API > > >> > > > that we think may be useful in other contexts (remove > individual > > >> > > member based on memberId), > > >> > > > and just add the API we actually need (remove all members from > > group) > > >> > > in this KIP? We can > > >> > > > always add the "remove individual member by memberId" API at a > > later > > >> > > point, if it turns out to > > >> > > > actually be requested for specific reasons? > > >> > > > > > >> > > > Also, it's more efficient to just send a single "clear the > > group" > > >> > > request vs sending a LeaveGroup > > >> > > > request for every single member. What do you think? > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > On Sat, Mar 7, 2020 at 1:41 AM feyman2009 > > >> > > <feyman2...@aliyun.com.invalid> wrote: > > >> > > > Hi, Matthias > > >> > > > Thanks, I updated the KIP to mention the deprecated and > > newly > > >> > > added methods. > > >> > > > > > >> > > > 1. What happens is `groupInstanceId` is used for a dynamic > > group? What > > >> > > > happens if both parameters are specified? What happens if > > `memberId` > > >> > > > is specified for a static group? > > >> > > > > > >> > > > => my understanding is that the dynamic/static membership is > > member > > >> > > level other than group level, and I think above questions could > be > > >> > > answered by the "Leave Group Logic Change" section in KIP-345: > > >> > > > > >> > > > > >> > > > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-345%3A+Introduce+static+membership+protocol+to+reduce+consumer+rebalances > > >> > > , > > >> > > this KIP stays consistent with KIP-345. > > >> > > > > > >> > > > 2. About the `--force` option. Currently, StreamsResetter > > fails with > > >> > an > > >> > > > error if the consumer group is not empty. You state in your > > KIP that: > > >> > > > > > >> > > > > without --force, we need to wait for session timeout. > > >> > > > > > >> > > > Is this an intended behavior change if `--force` is not used > > or is the > > >> > > > KIP description incorrect? > > >> > > > > > >> > > > => This is the intended behavior. For this part, I think > there > > are > > >> > > two ways to go: > > >> > > > 1) (the implicit way) Not introducing the new "--force" > > option, with > > >> > > this KIP, StreamsResetter will by default remove active > > members(with > > >> > > long session timeout configured) on broker side > > >> > > > 2) (the explicit way) Introduce the new "--force" option, > > users need > > >> > > to explicitly specify --force to remove the active members. If > > --force > > >> > > not specified, the StreamsResetter behaviour is as previous > > versions'. > > >> > > > > > >> > > > I think the two alternatives above are both feasible, > > personally I > > >> > > prefer way 2. > > >> > > > > > >> > > > 3. For my own understanding: with the `--force` option, we > > intend to > > >> > get > > >> > > > all `memberIds` and send a "remove member" request for each > > with > > >> > > > corresponding `memberId` to remove the member from the group > > >> > > > (independent is the group is static or dynamic)? > > >> > > > > > >> > > > => Yeah, minor thing to mention is we will send the "remove > > member" > > >> > > request for each member(could be dynamic member or static > member) > > to > > >> > > remove them from group > > >> > > > for dynamic members, both "group.instance.id" and "member.id > " > > will be > > >> > > specified > > >> > > > for dynamic members, only "member.id" will be specified > > >> > > > > > >> > > > 4. I am really wondering, if for a static group, we should > > allow users > > >> > > to > > >> > > > remove individual members? For a dynamic group this feature > > would not > > >> > > > make much sense IMHO, because the `memberId` is not know by > > the user. > > >> > > > > > >> > > > => KIP-345 introduced the batch removal feature for both > static > > >> > > member and dynamic member, my understanding is that "allow users > > to > > >> > > > remove individual members" could be useful for rolling bounce > > and > > >> > > scale down accoding to KIP-345. KafkaAdminClient currently only > > support > > >> > > static member removal and this KIP-571 enables dynamic member > > removal > > >> > > for it, which is also consistent with the broker side logic. > > Users could > > >> > > get the member.id (and group.instance.id if for static member) > by > > >> > > adminClient.describeConsumerGroups. > > >> > > > > > >> > > > Furthermore, I don't have an assumption that a consumer group > > should > > >> > > contain only static or dynamic members, and I think KIP-345 and > > this KIP > > >> > > don't need to be based on this assumption. > > >> > > > You could correct me if I have the wrong understanding :) > > >> > > > > > >> > > > Thanks! > > >> > > > Feyman > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > ------------------------------------------------------------------ > > >> > > > 发件人：Matthias J. Sax <mj...@apache.org> > > >> > > > 发送时间：2020年3月6日(星期五) 02:20 > > >> > > > 收件人：dev <dev@kafka.apache.org> > > >> > > > 主 题：Re: 回复：回复：[Vote] KIP-571: Add option to force remove > > >> > > members in StreamsResetter > > >> > > > > > >> > > > Feyman, > > >> > > > > > >> > > > thanks a lot for the KIP. Overall LGTM. I have a few more > > comment and > > >> > > > questions (sorry for the late reply): > > >> > > > > > >> > > > > > >> > > > The KIP mentions that some constructors will be deprecated. > > Those > > >> > should > > >> > > > be listed explicitly. For example: > > >> > > > > > >> > > > > > >> > > > public class MemberToRemove { > > >> > > > > > >> > > > // deprecated methods > > >> > > > > > >> > > > @Deprecated > > >> > > > public MemberToRemove(String groupInstanceId); > > >> > > > > > >> > > > // new methods > > >> > > > > > >> > > > public MemberToRemove() > > >> > > > > > >> > > > public MemberToRemove withGroupInstanceId(String > > groupInstanceId) > > >> > > > > > >> > > > public MemberToRemove withMemberId(String memberId) > > >> > > > } > > >> > > > > > >> > > > What happens is `groupInstanceId` is used for a dynamic group? > > What > > >> > > > happens if both parameters are specified? What happens if > > `memberId` > > >> > > > is specified for a static group? > > >> > > > > > >> > > > > > >> > > > About the `--force` option. Currently, StreamsResetter fails > > with an > > >> > > > error if the consumer group is not empty. You state in your > KIP > > that: > > >> > > > > > >> > > >> without --force, we need to wait for session timeout. > > >> > > > > > >> > > > Is this an intended behavior change if `--force` is not used > or > > is the > > >> > > > KIP description incorrect? > > >> > > > > > >> > > > For my own understanding: with the `--force` option, we intend > > to get > > >> > > > all `memberIds` and send a "remove member" request for each > with > > >> > > > corresponding `memberId` to remove the member from the group > > >> > > > (independent is the group is static or dynamic)? > > >> > > > > > >> > > > I am really wondering, if for a static group, we should allow > > users to > > >> > > > remove individual members? For a dynamic group this feature > > would not > > >> > > > make much sense IMHO, because the `memberId` is not know by > the > > user. > > >> > > > > > >> > > > > > >> > > > > > >> > > > -Matthias > > >> > > > > > >> > > > > > >> > > > On 3/5/20 7:15 AM, Bill Bejeck wrote: > > >> > > >> Thanks for the KIP. +1 (binding). > > >> > > > > > >> > > >> -Bill > > >> > > > > > >> > > > > > >> > > > > > >> > > >> On Wed, Mar 4, 2020 at 12:40 AM Guozhang Wang < > > wangg...@gmail.com> > > >> > > >> wrote: > > >> > > > > > >> > > >>> Thanks, +1 from me (binding). > > >> > > >>> > > >> > > >>> On Tue, Mar 3, 2020 at 9:39 PM feyman2009 < > > feyman2...@aliyun.com> > > >> > > >>> wrote: > > >> > > >>> > > >> > > >>>> Hi, Guozhang Thanks a lot for the advice, that make sense! > I > > >> > > >>>> have updated the KIP page with the operational steps of > > >> > > >>>> StreamsResetter. > > >> > > >>>> > > >> > > >>>> Thanks! Feyman > > >> > > >>>> > > >> > > >>>> > > ------------------------------------------------------------------ > > >> > > >>>> > > >> > > >>>> > > >> > > > 发件人：Guozhang Wang <wangg...@gmail.com> > > >> > > >>>> 发送时间：2020年3月3日(星期二) 14:22 收件人：dev <dev@kafka.apache.org>; > > >> > > >>>> feyman2009 <feyman2...@aliyun.com> 主 题：Re: 回复：回复：[Vote] > > >> > > >>>> KIP-571: Add option to force remove members in > > StreamsResetter > > >> > > >>>> > > >> > > >>>> Hello Feyman, thanks for the proposal! > > >> > > >>>> > > >> > > >>>> I read through the doc and overall it looks good to me. > > >> > > >>>> > > >> > > >>>> One minor thing I'd still like to point out is that, the > > >> > > >>>> "removeMembersFromConsumerGroup" only sends a leave-group > > >> > > >>>> request to the coordinator to let it remove the member, > > >> > > >>>> however, if the member is still there alive and running > then > > it > > >> > > >>>> would soon be notified that it is no > > >> > > >>> longer > > >> > > >>>> a legal member of the group via heartbeats, and then > > >> > > >>>> automatically tries > > >> > > >>> to > > >> > > >>>> re-join the group. So on the operational side, it is still > > >> > > >>>> required that the following steps: > > >> > > >>>> > > >> > > >>>> 1) first stop the consumers (of streams instances), wait > > until > > >> > > >>>> the shutdown is complete. 2) then use admin client in case > > the > > >> > > >>>> stopped consumers are still registered at the broker side > and > > >> > > >>>> we do not want to wait for session timeout. > > >> > > >>>> > > >> > > >>>> Even with this KIP, people should still not skip step 1) > > above, > > >> > > >>>> since otherwise the consumers would re-connect and re-join > > the > > >> > > >>>> group > > >> > > >>> immediately > > >> > > >>>> still. > > >> > > >>>> > > >> > > >>>> In your doc you've already mentioned "Furthermore, users > > should > > >> > > >>>> make sure all the stream applications are shutdown when > > running > > >> > > >>>> StreamsResetter > > >> > > >>> with > > >> > > >>>> --force, otherwise it might trigger unexpected rebalance. " > > >> > > >>>> What I'd want to clarify is that no matter if "--force" > > option > > >> > > >>>> is enabled, this is > > >> > > >>> always > > >> > > >>>> the case that users should shutdown the streams instances > > >> > > >>>> first, and then use the streams resetter :) > > >> > > >>>> > > >> > > >>>> As long as that is clarified in the proposal documentation, > > I'm > > >> > > >>>> +1 on > > >> > > >>> this > > >> > > >>>> KIP. > > >> > > >>>> > > >> > > >>>> > > >> > > >>>> Thanks again for the contribution, Guozhang > > >> > > >>>> > > >> > > >>>> > > >> > > >>>> On Mon, Mar 2, 2020 at 6:31 AM feyman2009 > > >> > > >>>> <feyman2...@aliyun.com.invalid > > >> > > >>>> > > >> > > >>>> wrote: Hi, John Sorry, I have mistaken the KIP approval > > >> > > >>>> standard, anyway, I will > > >> > > >>> start > > >> > > >>>> the PR soon and waiting for more binding approvals. > > >> > > >>>> > > >> > > >>>> Thanks! Feyman > > >> > > >>>> > > >> > > >>>> > > >> > > >>>> > > ------------------------------------------------------------------ > > >> > > >>>> > > >> > > >>>> > > >> > > > 发件人：John Roesler <vvcep...@apache.org> > > >> > > >>>> 发送时间：2020年3月2日(星期一) 22:00 收件人：dev > > >> > > > <dev@kafka.apache.org> 主 > > >> > > >>>> 题：Re: 回复：回复：[Vote] KIP-571: Add option to force remove > > members > > >> > > >>>> in StreamsResetter > > >> > > >>>> > > >> > > >>>> Hi Feyman, > > >> > > >>>> > > >> > > >>>> Sorry, but we actually need 3 binding votes for the KIP to > > >> > > >>>> pass. Please feel free to keep bumping the thread until > some > > >> > > >>>> more committers can take > > >> > > >>> a > > >> > > >>>> look. > > >> > > >>>> > > >> > > >>>> By the way, you can totally start a PR, but we can’t merge > it > > >> > > >>>> until the KIP passes the vote. > > >> > > >>>> > > >> > > >>>> Thanks! John > > >> > > >>>> > > >> > > >>>> On Mon, Mar 2, 2020, at 00:24, feyman2009 wrote: > > >> > > >>>>> Hi,all Since currently we have 1 binding and two > non-binding > > >> > > >>>>> +1, I will update the KIP-571 as adopted and initiate a PR > > >> > > >>>>> shortly > > >> > > >>>>> > > >> > > >>>>> Thanks! Feyman > > >> > > >>>>> > > >> > > >>>>> > > >> > > >>>>> > > ------------------------------------------------------------------ > > >> > > >>>>> > > >> > > >>>>> > > >> > > > 发件人：Sophie Blee-Goldman <sop...@confluent.io> > > >> > > >>>>> 发送时间：2020年2月28日(星期五) 10:17 收件人：dev > > >> > > > <dev@kafka.apache.org> 主 > > >> > > >>>>> 题：Re: 回复：[Vote] KIP-571: Add option to force remove > members > > >> > > >>>>> in > > >> > > >>>> StreamsResetter > > >> > > >>>>> > > >> > > >>>>> Thanks for the KIP, +1 (non-binding) > > >> > > >>>>> > > >> > > >>>>> On Thu, Feb 27, 2020 at 12:40 PM Boyang Chen < > > >> > > >>> reluctanthero...@gmail.com > > >> > > >>>>> > > >> > > >>>>> wrote: > > >> > > >>>>> > > >> > > >>>>>> Thanks Feyman, +1 (non-binding) > > >> > > >>>>>> > > >> > > >>>>>> On Thu, Feb 27, 2020 at 9:25 AM John Roesler > > >> > > >>>>>> <vvcep...@apache.org> > > >> > > >>>> wrote: > > >> > > >>>>>> > > >> > > >>>>>>> Thanks for the proposal! > > >> > > >>>>>>> > > >> > > >>>>>>> I'm +1 (binding) -John > > >> > > >>>>>>> > > >> > > >>>>>>> On Wed, Feb 26, 2020, at 19:41, feyman2009 wrote: > > >> > > >>>>>>>> Updated with the KIP link: > > >> > > >>>>>>>> > > >> > > >>>>>>> > > >> > > >>>>>> > > >> > > >>>> > > >> > > >>> > > >> > > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-571%3A+Add+opti > > >> > > > on+to+force+remove+members+in+StreamsResetter > > >> > > >>>>>>>> > > >> > > >>>>>>>> > > >> > > >>>>>>>> > > >> > > >>> > > >> > > >>> > > >> > > > > > ------------------------------------------------------------------ > > >> > > >>>>>>>> 发件人：feyman2009 <feyman2...@aliyun.com.INVALID> 发送时 > > >> > > >>>>>>>> 间：2020年2月27日(星期四) 09:38 收件人：dev <dev@kafka.apache.org> > > >> > > >>>>>>>> 主 题：[Vote] KIP-571: Add option to force remove members > > >> > > >>>>>>>> in > > >> > > >>>>>> StreamsResetter > > >> > > >>>>>>>> > > >> > > >>>>>>>> > > >> > > >>>>>>>> Hi, all I would like to start a vote on KIP-571: Add > > >> > > >>>>>>>> option to force > > >> > > >>>> remove > > >> > > >>>>>>>> members in StreamsResetter . > > >> > > >>>>>>>> > > >> > > >>>>>>>> Thanks! Feyman > > >> > > >>>>>>>> > > >> > > >>>>>>>> > > >> > > >>>>>>> > > >> > > >>>>>> > > >> > > >>>>> > > >> > > >>>>> > > >> > > >>>> > > >> > > >>>> > > >> > > >>>> > > >> > > >>>> -- -- Guozhang > > >> > > >>>> > > >> > > >>>> > > >> > > >>>> > > >> > > >>> > > >> > > >>> -- -- Guozhang > > >> > > >>> > > >> > > > > > >> > > > > > >> > > > > > >> > > > > >> > > > > >> > > > >> > -- > > >> > -- Guozhang > > >> > > > >> > > >> > > >> > > >> > > >> > > > > > > > > > > > >
