Hi, Sophie: David J. has found a regression in MirrorMaker 2 that prevents the MM2 executable from starting: https://issues.apache.org/jira/browse/KAFKA-12326. This was caused by a recent fix of mine ( https://issues.apache.org/jira/browse/KAFKA-10021) and is a serious regression limited to the MirrorMaker 2 executable. I have a one-line PR to fix the regression (https://github.com/apache/kafka/pull/10122) and have verified it corrects the MM2 executable. Once the PR is approved and with your approval, I can cherry-pick to the `2.6` branch.
Best regards, Randall On Wed, Feb 10, 2021 at 12:43 PM Sophie Blee-Goldman <sop...@confluent.io> wrote: > Ok, thanks for the update! > > On Wed, Feb 10, 2021 at 1:06 AM Luke Chen <show...@gmail.com> wrote: > > > Hi Ismael & Sophie, > > Sorry, after some investigation, I think this might not be a defect. To > > work with the project with a specific scala version, user might need to > use > > the same version as the project used. This issue also happened on other > > projects using scala, ex: Spark. ref: > https://stackoverflow.com/a/61677956 > > . > > > > So, you can continue to cut the rc. > > > > Thank you very much. > > Luke > > > > On Wed, Feb 10, 2021 at 11:19 AM Luke Chen <show...@gmail.com> wrote: > > > > > I just saw the defect KAFKA-12312 > > > <https://issues.apache.org/jira/browse/KAFKA-12312>, so I brought it > to > > > your attention. > > > Do you think it's not a compatibility issue? If not, I think we don't > > need > > > to cherry-pick the fix. > > > > > > Thanks. > > > Luke > > > > > > On Wed, Feb 10, 2021 at 11:16 AM Ismael Juma <ism...@juma.me.uk> > wrote: > > > > > >> It's a perf improvement, there was no regression. I think Luke needs > to > > be > > >> clearer how this impacts users. Luke, are you referring to cases where > > >> someone runs the broker in an embedded scenario (eg tests)? > > >> > > >> Ismael > > >> > > >> On Tue, Feb 9, 2021, 6:50 PM Sophie Blee-Goldman <sop...@confluent.io > > > > >> wrote: > > >> > > >> > What do you think Ismael? I agreed initially because I saw the > commit > > >> > message says it fixes a performance regression. But admittedly I > don't > > >> have > > >> > much context on this particular issue > > >> > > > >> > If it's low risk then I don't have a strong argument against > including > > >> it. > > >> > However > > >> > I aim to cut the rc tomorrow or Thursday, and if it hasn't been > > >> > cherrypicked by then > > >> > I won't block the release on it. > > >> > > > >> > On Tue, Feb 9, 2021 at 4:53 PM Luke Chen <show...@gmail.com> wrote: > > >> > > > >> > > Hi Ismael, > > >> > > Yes, I agree it's like an improvement, not a bug. I don't insist > on > > >> > putting > > >> > > it into 2.6, just want to bring it to your attention. > > >> > > In my opinion, this issue will block users who adopt the scala > > 2.13.4 > > >> or > > >> > > later to use Kafka 2.6. > > >> > > So if we still have time, we can consider to cherry-pick the fix > > into > > >> 2.6 > > >> > > and 2.7. > > >> > > > > >> > > What do you think? > > >> > > > > >> > > Thank you. > > >> > > Luke > > >> > > > > >> > > On Wed, Feb 10, 2021 at 3:24 AM Ismael Juma <ism...@juma.me.uk> > > >> wrote: > > >> > > > > >> > > > Can you elaborate why this needs to be in 2.6? Seems like an > > >> > improvement > > >> > > > versus a critical bug fix. > > >> > > > > > >> > > > Ismael > > >> > > > > > >> > > > On Mon, Feb 8, 2021 at 6:39 PM Luke Chen <show...@gmail.com> > > wrote: > > >> > > > > > >> > > > > Hi Sophie, > > >> > > > > I found there is 1 issue that should be cherry-picked into 2.6 > > and > > >> > 2.7 > > >> > > > > branches: KAFKA-12312 < > > >> > > https://issues.apache.org/jira/browse/KAFKA-12312 > > >> > > > >. > > >> > > > > Simply put, *Scala* *2.13.4* is released at the end of 2020, > and > > >> we > > >> > > > > upgraded to it and fixed some compatible issues on this PR > > >> > > > > <https://github.com/apache/kafka/pull/9643>, more > specifically, > > >> it's > > >> > > > here > > >> > > > > < > > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > > https://github.com/apache/kafka/pull/9643/files#diff-fda3fb44e69a19600913bd951431fb0035996c76325b1c1d84d6f34bec281205R292 > > >> > > > > > > > >> > > > > . > > >> > > > > We only merged this fix on *trunk*(which will be on 2.8), but > we > > >> > didn't > > >> > > > > tell users (or we didn't know there'll be compatible issues) > not > > >> to > > >> > > adopt > > >> > > > > the latest *Scala* *2.13.4*. > > >> > > > > > > >> > > > > Therefore, I think we should cherry-pick this fix into 2.6 and > > 2.7 > > >> > > > > branches. What do you think? > > >> > > > > > > >> > > > > Thank you. > > >> > > > > Luke > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > On Tue, Feb 9, 2021 at 3:10 AM Sophie Blee-Goldman < > > >> > > sop...@confluent.io> > > >> > > > > wrote: > > >> > > > > > > >> > > > > > Hey all, > > >> > > > > > > > >> > > > > > Since all outstanding bugfixes seem to have made their way > > over > > >> to > > >> > > the > > >> > > > > 2.6 > > >> > > > > > branch by now, I plan to move ahead with cutting an RC. As > > >> always, > > >> > > > please > > >> > > > > > let me know if you uncover and critical or blocker bugs that > > >> affect > > >> > > 2.6 > > >> > > > > > > > >> > > > > > Thanks! > > >> > > > > > Sophie > > >> > > > > > > > >> > > > > > On Thu, Jan 28, 2021 at 9:25 AM John Roesler < > > >> vvcep...@apache.org> > > >> > > > > wrote: > > >> > > > > > > > >> > > > > > > Thanks so much for stepping up, Sophie! > > >> > > > > > > > > >> > > > > > > I'm +1 > > >> > > > > > > > > >> > > > > > > -John > > >> > > > > > > > > >> > > > > > > On Wed, 2021-01-27 at 17:59 -0500, Bill Bejeck wrote: > > >> > > > > > > > Thanks for taking this on Sophie. +1 > > >> > > > > > > > > > >> > > > > > > > Bill > > >> > > > > > > > > > >> > > > > > > > On Wed, Jan 27, 2021 at 5:59 PM Ismael Juma < > > >> ism...@juma.me.uk > > >> > > > > >> > > > > wrote: > > >> > > > > > > > > > >> > > > > > > > > Thanks Sophie! +1 > > >> > > > > > > > > > > >> > > > > > > > > Ismael > > >> > > > > > > > > > > >> > > > > > > > > On Wed, Jan 27, 2021 at 2:45 PM Sophie Blee-Goldman < > > >> > > > > > > sop...@confluent.io> > > >> > > > > > > > > wrote: > > >> > > > > > > > > > > >> > > > > > > > > > Hi all, > > >> > > > > > > > > > > > >> > > > > > > > > > I'd like to volunteer as release manager for a 2.6.2 > > >> > release. > > >> > > > > This > > >> > > > > > is > > >> > > > > > > > > being > > >> > > > > > > > > > accelerated > > >> > > > > > > > > > to address a critical regression in Kafka Streams > for > > >> > Windows > > >> > > > > > users. > > >> > > > > > > > > > > > >> > > > > > > > > > You can find the release plan on the wiki: > > >> > > > > > > > > > > > >> > > > > > > > >> > > https://cwiki.apache.org/confluence/display/KAFKA/Release+Plan+2.6.2 > > >> > > > > > > > > > > > >> > > > > > > > > > Thanks, > > >> > > > > > > > > > Sophie > > >> > > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > > > > >
