Offset commit is something that is done in the act of consuming (or reading) Kafka messages. Yes technically it is a write to the Kafka consumer offset topic but it's much easier for administers to think of ACLs in terms of whether the user is allowed to write (Produce) or read (Consume) messages and not the lower level semantics that are that consuming is actually reading AND writing (albeit only to the offset topic).
-hans > On Jun 17, 2017, at 10:59 AM, Viktor Somogyi <viktor.somo...@cloudera.com> > wrote: > > Hi Vahid, > > +1 for OffsetFetch from me too. > > I also wanted to ask the strangeness of the permissions, like why is > OffsetCommit a Read operation instead of Write which would intuitively make > more sense to me. Perhaps any expert could shed some light on this? :) > > Viktor > > On Tue, Jun 13, 2017 at 2:38 PM, Vahid S Hashemian < > vahidhashem...@us.ibm.com <mailto:vahidhashem...@us.ibm.com>> wrote: > >> Hi Michal, >> >> Thanks a lot for your feedback. >> >> Your statement about Heartbeat is fair and makes sense. I'll update the >> KIP accordingly. >> >> --Vahid >> >> >> >> >> From: Michal Borowiecki <michal.borowie...@openbet.com> >> To: us...@kafka.apache.org, Vahid S Hashemian < >> vahidhashem...@us.ibm.com>, dev@kafka.apache.org >> Date: 06/13/2017 01:35 AM >> Subject: Re: [DISCUSS] KIP-163: Lower the Minimum Required ACL >> Permission of OffsetFetch >> ------------------------------ >> >> >> >> Hi Vahid, >> >> +1 wrt OffsetFetch. >> >> The "Additional Food for Thought" mentions Heartbeat as a non-mutating >> action. I don't think that's true as the GroupCoordinator updates the >> latestHeartbeat field for the member and adds a new object to the >> heartbeatPurgatory, see completeAndScheduleNextHeartbeatExpiration() >> called from handleHeartbeat() >> >> NB added dev mailing list back into CC as it seems to have been lost along >> the way. >> >> Cheers, >> >> Michał >> >> >> On 12/06/17 18:47, Vahid S Hashemian wrote: >> Hi Colin, >> >> Thanks for the feedback. >> >> To be honest, I'm not sure either why Read was selected instead of Write >> for mutating APIs in the initial design (I asked Ewen on the corresponding >> JIRA and he seemed unsure too). >> Perhaps someone who was involved in the design can clarify. >> >> Thanks. >> --Vahid >> >> >> >> >> From: Colin McCabe *<cmcc...@apache.org <mailto:cmcc...@apache.org>>* >> <cmcc...@apache.org <mailto:cmcc...@apache.org>> >> To: *us...@kafka.apache.org <mailto:us...@kafka.apache.org>* >> <us...@kafka.apache.org <mailto:us...@kafka.apache.org>> >> Date: 06/12/2017 10:11 AM >> Subject: Re: [DISCUSS] KIP-163: Lower the Minimum Required ACL >> Permission of OffsetFetch >> >> >> >> Hi Vahid, >> >> I think you make a valid point that the ACLs controlling group >> operations are not very intuitive. >> >> This is probably a dumb question, but why are we using Read for mutating >> APIs? Shouldn't that be Write? >> >> The distinction between Describe and Read makes a lot of sense for >> Topics. A group isn't really something that you "read" from in the same >> way as a topic, so it always felt kind of weird there. >> >> best, >> Colin >> >> >> On Thu, Jun 8, 2017, at 11:29, Vahid S Hashemian wrote: >> >> Hi all, >> >> I'm resending my earlier note hoping it would spark some conversation >> this >> time around :) >> >> Thanks. >> --Vahid >> >> >> >> >> From: "Vahid S Hashemian" *<vahidhashem...@us.ibm.com >> <mailto:vahidhashem...@us.ibm.com>>* >> <vahidhashem...@us.ibm.com <mailto:vahidhashem...@us.ibm.com>> >> To: dev *<dev@kafka.apache.org <mailto:dev@kafka.apache.org>>* >> <dev@kafka.apache.org <mailto:dev@kafka.apache.org>>, "Kafka User" >> >> *<us...@kafka.apache.org <mailto:us...@kafka.apache.org>>* >> <us...@kafka.apache.org <mailto:us...@kafka.apache.org>> >> >> Date: 05/30/2017 08:33 AM >> Subject: KIP-163: Lower the Minimum Required ACL Permission of >> OffsetFetch >> >> >> >> Hi, >> >> I started a new KIP to improve the minimum required ACL permissions of >> some of the APIs: >> >> >> >> *https://cwiki.apache.org/confluence/display/KAFKA/KIP-163%3A+Lower+the+Minimum+Required+ACL+Permission+of+OffsetFetch* >> >> <https://cwiki.apache.org/confluence/display/KAFKA/KIP-163%3A+Lower+the+Minimum+Required+ACL+Permission+of+OffsetFetch*> >> <https://cwiki.apache.org/confluence/display/KAFKA/KIP-163%3A+Lower+the+Minimum+Required+ACL+Permission+of+OffsetFetch >> >> <https://cwiki.apache.org/confluence/display/KAFKA/KIP-163%3A+Lower+the+Minimum+Required+ACL+Permission+of+OffsetFetch>> >> >> >> >> The KIP is to address KAFKA-4585. >> >> Feedback and suggestions are welcome! >> >> Thanks. >> --Vahid >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> -- >> <http://www.openbet.com/ <http://www.openbet.com/>> *Michal Borowiecki* >> *Senior Software Engineer L4* >> *T: * +44 208 742 1600 <(208)%20742-1600> >> +44 203 249 8448 <(203)%20249-8448> >> >> *E: * *michal.borowie...@openbet.com <mailto:michal.borowie...@openbet.com>* >> <michal.borowie...@openbet.com <mailto:michal.borowie...@openbet.com>> >> *W: * *www.openbet.com <http://www.openbet.com/>* <http://www.openbet.com/ >> <http://www.openbet.com/>> >> *OpenBet Ltd* >> Chiswick Park Building 9 >> 566 Chiswick High Rd >> London >> W4 5XT >> UK >> <https://www.openbet.com/email_promo <https://www.openbet.com/email_promo>> >> This message is confidential and intended only for the addressee. 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