Hi Lianet, Thanks for your comments. LM1: kafka-share-groups.sh is only able to reset the offsets for a single group at a time. I did not extend that capability in this KIP. I understand that kafka-consumer-groups.sh can do that, but the share groups tool cannot.
If the user exports the offsets for multiple consumer groups at once, the resulting file will contains 4 columns (group, topic, partition, offset). If you then reset share group offsets from such a file, it filters the lines by the specified group ID, in exactly the same way as the kafka-consumer-groups.sh tool. LM2: Yes, the offset validation will be just the same. I've updated the KIP to be more explicit that the behaviour will be the same as kafka-consumer-groups.sh, with the exception of being able to work on multiple groups at once. Thanks, Andrew On 2026/05/24 10:14:55 Lianet Magrans wrote: > Hi Andrew, thanks for the KIP! > > LM1: about the --from-file option, the KIP shows the example with a single > group, but will it support loading multiple groups from a single file too? > (or loading a single group but from a file with multiple groups?). The > trick is thst the consumer tool allows exporting multiple groups to a > single file with the --all-groups option (so I imagine it may be used with > files with several groups). If the intention is to support multiple groups > as part of this KIP, I imagine the parsing and error handling behaviour > will just be the same as when the consumer-group tool resets from a file > containing multiple groups? (or no multi group support for now?) > > LM2: about the --to-offset option, several things could go wrong, I imagine > the behaviour will just be the same as in the consumer-group tool when > resetting to a negative offset, or an offset out of range? > > Thanks! > Lianet > > On Thu, Apr 30, 2026 at 2:48 PM Andrew Schofield <[email protected]> > wrote: > > > Hi Apoorv, > > Thanks for your review. > > > > AM1: I can add --export, but I will need to add --to-current as well. I'll > > update the KIP. > > > > Thanks, > > Andrew > > > > On 2026/04/30 10:59:42 Apoorv Mittal wrote: > > > Hi Andrew, > > > Thanks for the KIP. It will be a great addition. I have one query: > > > > > > AM1: Does --export also make sense for share groups as well? The current > > > definition in KIP works for consumer group -> share group migration, but > > > without --export on share groups, user cannot do: > > > - Share group -> share group migration (e.g., renaming a group) > > > - Share group -> consumer group rollback (if the migration doesn't go > > > well) > > > > > > Hence, KIP should either add --export to share groups or explicitly state > > > why it's being deferred? Please let me know your thoughts. > > > > > > Regards, > > > Apoorv Mittal > > > > > > > > > On Thu, Apr 23, 2026 at 6:18 PM Andrew Schofield < > > [email protected]> > > > wrote: > > > > > > > Hi, > > > > I’d like to start discussion for a new KIP which adds some new options > > for > > > > initialization of share groups. This makes it easier to migrate > > > > applications from a consumer group to a share group from the committed > > > > offsets of the consumer group. > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-1323%3A+Initialization+of+share+group+offsets+from+a+specific+offset+or+a+file > > > > > > > > Thanks, > > > > Andrew > > > > > > > > > >
