Hi all, I took the 3.9 branch <https://github.com/apache/kafka/tree/3.9> from upstream and ran all the unit tests. The StorageToolTest unit test is failing consistently:
% ./gradlew core:test --tests StorageToolTest Gradle Test Run :core:test > Gradle Test Executor 20 > StorageToolTest > testFormatWithReleaseVersionAsFeature() FAILED org.opentest4j.AssertionFailedError: Failed to find content in output: Formatting metadata directory /var/folders/bq/w6tnkbq964q8sqpvj4fbmjr40000gq/T/kafka-12278605357058017295 with metadata.version 3.8-IV0. ==> expected: <true> but was: <false> at app//org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151) at app//org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132) at app//org.junit.jupiter.api.AssertTrue.failNotTrue(AssertTrue.java:63) at app//org.junit.jupiter.api.AssertTrue.assertTrue(AssertTrue.java:36) at app//org.junit.jupiter.api.Assertions.assertTrue(Assertions.java:214) at app//kafka.tools.StorageToolTest.testFormatWithReleaseVersionAsFeature(StorageToolTest.scala:329) Gradle Test Run :core:test > Gradle Test Executor 20 > StorageToolTest > testFormatWithInvalidFeature() FAILED org.opentest4j.AssertionFailedError: expected: <Unsupported feature: non.existent.feature. Supported features are: group.version, kraft.version, transaction.version> but was: <Unsupported feature: non.existent.feature. Supported features are: kraft.version, transaction.version> at app//org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151) at app//org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132) at app//org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:197) at app//org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:182) at app//org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:177) at app//org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:1145) at app//kafka.tools.StorageToolTest.testFormatWithInvalidFeature(StorageToolTest.scala:340) Am I missing something? On Fri, Nov 8, 2024 at 12:50 AM Colin McCabe <cmcc...@apache.org> wrote: > Thanks, Josep. > > best, > Colin > > On Wed, Nov 6, 2024, at 23:58, Josep Prat wrote: > > Hi Colin, > > I see that you made 3.9 the default docs version in Kafka-Site. However, > as > > your doc changes were pushed before the 3.8.1 release, now the > upgrade.html > > page doesn't mention 3.8.1 at all. I'll update the site. > > > > On Wed, Nov 6, 2024 at 4:48 PM Viktor Somogyi-Vass > > <viktor.somo...@cloudera.com.invalid> wrote: > > > >> Ok, sorry for the noise. It seems like my setup was incorrectly > configured, > >> one controller had an incorrect voters config and that caused the issue. > >> Retested it and it works now. > >> But given this, I might as well just give a +1. :) > >> > >> On Wed, Nov 6, 2024 at 2:53 PM Viktor Somogyi-Vass < > >> viktor.somo...@cloudera.com> wrote: > >> > >> > Hey All, > >> > > >> > It seems like I ran into an issue. While trying to do the migration > (3.9 > >> > ZK -> 3.9 KRaft), at the very last step the whole cluster (except the > >> > controller I just restarted) fails with a fatal error where a > controller > >> (I > >> > think) requests a truncation that is below the HWM. > >> > I tried to capture everything but with the configs and the steps I > >> > described it can be reproduced every time. > >> > > >> > I started looking into it, but since I'm completely unfamiliar with > many > >> > parts of KRaft, I'd be happy if someone else more familiar with it > could > >> > look at it. Especially if I didn't follow the migration procedure well > >> (but > >> > I think I did so). > >> > All the info captured here: > >> > https://issues.apache.org/jira/browse/KAFKA-17950 > >> > > >> > Viktor > >> > > >> > > >> > On Fri, Nov 1, 2024 at 11:00 PM Colin McCabe <cmcc...@apache.org> > wrote: > >> > > >> >> Argh. That should read "5 +1 votes". :) > >> >> > >> >> Thanks, everyone. > >> >> Colin > >> >> > >> >> > >> >> On Fri, Nov 1, 2024, at 14:58, Colin McCabe wrote: > >> >> > Hi all, > >> >> > > >> >> > This vote passes with 7 +1 votes (3 bindings) and no 0 or -1 votes. > >> >> > > >> >> > +1 votes > >> >> > PMC Members: > >> >> > * Justine Olshan > >> >> > * Bill Bejeck > >> >> > * David Arthur > >> >> > * Luke Chen > >> >> > > >> >> > Community: > >> >> > * Federico Valeri > >> >> > > >> >> > 0 votes > >> >> > * No votes > >> >> > > >> >> > -1 votes > >> >> > * No votes > >> >> > > >> >> > Vote thread: > >> >> > https://lists.apache.org/thread/og8l24z8oj87x0zsoqddfxo54qsj4d1o > >> >> > > >> >> > I'll continue with the release process and the release announcement > >> >> > will follow in the next few days. > >> >> > > >> >> > best, > >> >> > Colin > >> >> > > >> >> > > >> >> > On Thu, Oct 31, 2024, at 21:03, Luke Chen wrote: > >> >> >> Hi Colin, > >> >> >> > >> >> >> Thanks for the update. > >> >> >> I've ran a sanity check as Mickael suggested for the maven > artifacts > >> >> with > >> >> >> the one in > https://dist.apache.org/repos/dist/dev/kafka/3.9.0-rc5/. > >> >> >> I used jarcomp < > >> >> https://activityworkshop.net/software/jarcomp/index.html> > >> >> >> to verify: > >> >> >> 1. kafka_2.13-3.9.0.jar > >> >> >> 2. kafka-clients-3.9.0.jar > >> >> >> 3. kafka-metadata-3.9.0.jar > >> >> >> > >> >> >> I confirmed all the class files in the jars have the same content. > >> >> >> > >> >> >> So +1 (binding) from me. > >> >> >> > >> >> >> Thank you. > >> >> >> Luke > >> >> >> > >> >> >> On Fri, Nov 1, 2024 at 1:08 AM Mickael Maison < > >> >> mickael.mai...@gmail.com> > >> >> >> wrote: > >> >> >> > >> >> >>> Hi, > >> >> >>> > >> >> >>> Can we add sanity checks to ensure all artifacts are present when > >> >> >>> running the release? > >> >> >>> Also should we use a different folder for each RC? This would > >> >> >>> eliminate the risk of artifacts from previous RCs hiding an > issue. > >> >> >>> Luke spotted the old artifacts this time but this could have been > >> >> >>> missed. > >> >> >>> > >> >> >>> Thanks, > >> >> >>> Mickael > >> >> >>> > >> >> >>> On Thu, Oct 31, 2024 at 5:55 PM Colin McCabe <cmcc...@apache.org > > > >> >> wrote: > >> >> >>> > > >> >> >>> > Hi David, > >> >> >>> > > >> >> >>> > Thanks for checking. I took a look and yes, I did forget to > upload > >> >> the > >> >> >>> Scala 2.12 artifacts previously. The script runs gradlewAll, but > >> when > >> >> I was > >> >> >>> trying to do the steps manually, I missed that and just ran > gradlew, > >> >> which > >> >> >>> only did Scala 2.13. > >> >> >>> > > >> >> >>> > This should be fixed now! > >> >> >>> > > >> >> >>> > The scala 2.12 artifacts are here: > >> >> >>> > > >> >> >>> > > >> >> > https://repository.apache.org/content/repositories/orgapachekafka-1827/ > >> >> >>> > > >> >> >>> > and also here: > >> >> >>> > > >> >> >>> > > >> >> >>> > >> >> > >> > https://repository.apache.org/content/groups/staging/org/apache/kafka/kafka_2.12/3.9.0/ > >> >> >>> > > >> >> >>> > I wonder if we should change the release.py script to just run > the > >> >> >>> gradlew steps manually. The gradlewAll script seems a bit > confusing > >> >> (or > >> >> >>> maybe that's just me?) > >> >> >>> > > >> >> >>> > best, > >> >> >>> > Colin > >> >> >>> > > >> >> >>> > > >> >> >>> > On Wed, Oct 30, 2024, at 11:02, David Arthur wrote: > >> >> >>> > > Should there be Scala 2.12 artifacts in the Maven staging? > >> >> >>> > > > >> >> >>> > > I see these for 2.13: > >> >> >>> > > * > >> >> >>> > > > >> >> >>> > >> >> > >> > https://repository.apache.org/content/groups/staging/org/apache/kafka/kafka_2.13/3.9.0/ > >> >> >>> > > * > >> >> >>> > > > >> >> >>> > >> >> > >> > https://repository.apache.org/content/groups/staging/org/apache/kafka/kafka-streams-scala_2.13/3.9.0/ > >> >> >>> > > > >> >> >>> > > but I don't see 2.12 for 3.9.0 release. > >> >> >>> > > > >> >> >>> > > I can confirm that the other artifacts (such as > kafka-clients) > >> do > >> >> have > >> >> >>> > > today's timestamp for the 3.9.0 artifact. > >> >> >>> > > > >> >> >>> > > -David > >> >> >>> > > > >> >> >>> > > On Wed, Oct 30, 2024 at 12:36 PM Colin McCabe < > >> cmcc...@apache.org > >> >> > > >> >> >>> wrote: > >> >> >>> > > > >> >> >>> > >> Thanks for checking, Luke. I did actually visit > >> >> >>> > >> https://repository.apache.org/#stagingRepositories and hit > >> >> close on > >> >> >>> the > >> >> >>> > >> artifacts as the release.py script says to do. I don't know > why > >> >> they > >> >> >>> ended > >> >> >>> > >> up not showing up. > >> >> >>> > >> > >> >> >>> > >> Today I dropped all the maven artifacts for previous 3.9 > RCs, > >> >> >>> switched to > >> >> >>> > >> java 8, and re-ran "gradlew publish" and "mvn deploy > >> >> -Pgpg-signing". > >> >> >>> Then I > >> >> >>> > >> closed the two artifacts that were uploaded. You can see > them > >> >> here: > >> >> >>> > >> > >> >> >>> > >> > >> >> >>> > >> >> > https://repository.apache.org/content/repositories/orgapachekafka-1825/ > >> >> >>> > >> > >> >> >>> > >> >> > https://repository.apache.org/content/repositories/orgapachekafka-1826/ > >> >> >>> > >> > >> >> >>> > >> Hopefully these should now show up in Maven as expected. > >> >> >>> > >> > >> >> >>> > >> best, > >> >> >>> > >> Colin > >> >> >>> > >> > >> >> >>> > >> > >> >> >>> > >> On Tue, Oct 29, 2024, at 23:51, Luke Chen wrote: > >> >> >>> > >> > Hi Colin, > >> >> >>> > >> > > >> >> >>> > >> > I was trying to test the RC, but I found the artifacts in > >> Maven > >> >> >>> artifacts > >> >> >>> > >> > to be voted upon are not up-to-date. > >> >> >>> > >> > Not only the "Last Modified" time in the 3.9.0 artifacts > are > >> on > >> >> >>> Oct. 10, > >> >> >>> > >> > but also the source code in the artifacts didn't include > the > >> >> latest > >> >> >>> > >> commits > >> >> >>> > >> > in RC5 here < > >> >> https://github.com/apache/kafka/commits/3.9.0-rc5/>. > >> >> >>> > >> > > >> >> >>> > >> > Could you help verify it? > >> >> >>> > >> > > >> >> >>> > >> > But I confirmed the release artifacts in " > >> >> >>> > >> > https://dist.apache.org/repos/dist/dev/kafka/3.9.0-rc5/" > is > >> >> >>> up-to-date. > >> >> >>> > >> > I did: > >> >> >>> > >> > - checked the checksums and signatures > >> >> >>> > >> > - ran upgrade from v3.8.1 to v3.9.0 > >> >> >>> > >> > - ran quickstart with the 2.13 binaries > >> >> >>> > >> > - verify tiered storage and KIP-950 (dynamically > disablement) > >> >> >>> > >> > > >> >> >>> > >> > I'll be +1 after the maven artifacts are updated. > >> >> >>> > >> > > >> >> >>> > >> > Thank you for running the release. > >> >> >>> > >> > Luke > >> >> >>> > >> > > >> >> >>> > >> > > >> >> >>> > >> > On Wed, Oct 30, 2024 at 5:40 AM Justine Olshan > >> >> >>> > >> <jols...@confluent.io.invalid> > >> >> >>> > >> > wrote: > >> >> >>> > >> > > >> >> >>> > >> >> Hey Colin, > >> >> >>> > >> >> > >> >> >>> > >> >> Thanks for the new RC. I've tested the --feature > >> functionality > >> >> >>> that was > >> >> >>> > >> >> missing before. Seems to be working as expected now. > >> >> >>> > >> >> As a side note, I was looking into how to configure > kip-853 > >> >> and it > >> >> >>> took > >> >> >>> > >> me > >> >> >>> > >> >> a moment to find the instructions in the documentation, I > >> >> wonder > >> >> >>> if it > >> >> >>> > >> >> could be included in the notable changes section of the > >> >> upgrade > >> >> >>> notes. > >> >> >>> > >> Not > >> >> >>> > >> >> a blocker as I believe we can still update documentation. > >> >> >>> > >> >> > >> >> >>> > >> >> I did some other spot checks on the rest of the release. > +1 > >> >> >>> (binding) > >> >> >>> > >> from > >> >> >>> > >> >> me > >> >> >>> > >> >> > >> >> >>> > >> >> Justine > >> >> >>> > >> >> > >> >> >>> > >> >> On Tue, Oct 29, 2024 at 12:45 PM Colin McCabe < > >> >> cmcc...@apache.org> > >> >> >>> > >> wrote: > >> >> >>> > >> >> > >> >> >>> > >> >> > Thanks, Anton. And thanks Chia-Ping Tsai for taking a > look > >> >> at > >> >> >>> how we > >> >> >>> > >> can > >> >> >>> > >> >> > improve the docs here... > >> >> >>> > >> >> > > >> >> >>> > >> >> > best, > >> >> >>> > >> >> > Colin > >> >> >>> > >> >> > > >> >> >>> > >> >> > > >> >> >>> > >> >> > On Tue, Oct 29, 2024, at 02:39, Anton Agestam wrote: > >> >> >>> > >> >> > > Hi Chia-Ping, > >> >> >>> > >> >> > > > >> >> >>> > >> >> > > Thanks for pointing those two fields out. I retract > my > >> -1. > >> >> >>> > >> >> > > > >> >> >>> > >> >> > > Cheers, > >> >> >>> > >> >> > > Anton > >> >> >>> > >> >> > > > >> >> >>> > >> >> > > Den sön 27 okt. 2024 kl 17:40 skrev Chia-Ping Tsai < > >> >> >>> > >> >> chia7...@apache.org > >> >> >>> > >> >> > >: > >> >> >>> > >> >> > > > >> >> >>> > >> >> > >> hi Anton > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > >> Thanks for sharing your insights on Kafka > >> >> serialization—it’s > >> >> >>> really > >> >> >>> > >> >> cool > >> >> >>> > >> >> > >> and interesting to me. Additionally, you inspired > me to > >> >> file > >> >> >>> a JIRA > >> >> >>> > >> >> > issue > >> >> >>> > >> >> > >> (KAFKA-17882) to improve the documentation. > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > >> The most important aspect of Kafka is compatibility, > >> and > >> >> the > >> >> >>> > >> >> > undocumented > >> >> >>> > >> >> > >> behavior has been in place for some time [0][1]. > This > >> >> means > >> >> >>> > >> there’s no > >> >> >>> > >> >> > need > >> >> >>> > >> >> > >> to rush your improvement for 3.9, as we’ll need to > >> >> explicitly > >> >> >>> add > >> >> >>> > >> >> > default > >> >> >>> > >> >> > >> values after applying your patch to ensure we > generate > >> >> the > >> >> >>> same > >> >> >>> > >> binary > >> >> >>> > >> >> > data. > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > >> In short, we can improve the documentation first. In > >> the > >> >> >>> meantime, > >> >> >>> > >> we > >> >> >>> > >> >> > can > >> >> >>> > >> >> > >> continue discussing behavior clarification for 4.0, > and > >> >> RM > >> >> >>> can keep > >> >> >>> > >> >> > running > >> >> >>> > >> >> > >> the RC for 3.9. Everything is on track. > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > >> Best, > >> >> >>> > >> >> > >> Chia-Ping > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > >> [0] > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > > >> >> >>> > >> >> > >> >> >>> > >> > >> >> >>> > >> >> > >> > https://github.com/apache/kafka/blob/3.8/clients/src/main/resources/common/message/FetchSnapshotResponse.json#L43 > >> >> >>> > >> >> > >> [1] > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > > >> >> >>> > >> >> > >> >> >>> > >> > >> >> >>> > >> >> > >> > https://github.com/apache/kafka/blob/3.8/group-coordinator/src/main/resources/common/message/ConsumerGroupMemberMetadataValue.json#L39 > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > >> On 2024/10/27 15:28:05 Anton Agestam wrote: > >> >> >>> > >> >> > >> > -1, refer to comments on the RC 2 thread. > >> >> >>> > >> >> > >> > > >> >> >>> > >> >> > >> > Den sön 27 okt. 2024 kl 02:51 skrev Colin McCabe < > >> >> >>> > >> >> cmcc...@apache.org > >> >> >>> > >> >> > >: > >> >> >>> > >> >> > >> > > >> >> >>> > >> >> > >> > > This is the RC5 candidate for the release of > Apache > >> >> Kafka > >> >> >>> > >> 3.9.0. > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > - This is a major release, the final one in the > 3.x > >> >> line. > >> >> >>> > >> (There > >> >> >>> > >> >> > may of > >> >> >>> > >> >> > >> > > course be other minor releases in this line, > such > >> as > >> >> >>> 3.9.1.) > >> >> >>> > >> >> > >> > > - Tiered storage will be considered > >> production-ready > >> >> in > >> >> >>> this > >> >> >>> > >> >> > release. > >> >> >>> > >> >> > >> > > - This will be the final major release to > feature > >> the > >> >> >>> > >> deprecated > >> >> >>> > >> >> > >> ZooKeeper > >> >> >>> > >> >> > >> > > mode. > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > This release includes the following KIPs: > >> >> >>> > >> >> > >> > > - KIP-853: Support dynamically changing KRaft > >> >> controller > >> >> >>> > >> >> membership > >> >> >>> > >> >> > >> > > - KIP-1057: Add remote log metadata flag to the > >> dump > >> >> log > >> >> >>> tool > >> >> >>> > >> >> > >> > > - KIP-1049: Add config log.summary.interval.ms > to > >> >> Kafka > >> >> >>> > >> Streams > >> >> >>> > >> >> > >> > > - KIP-1040: Improve handling of nullable values > in > >> >> >>> InsertField, > >> >> >>> > >> >> > >> > > ExtractField, and other transformations > >> >> >>> > >> >> > >> > > - KIP-1031: Control offset translation in > >> >> >>> MirrorSourceConnector > >> >> >>> > >> >> > >> > > - KIP-1033: Add Kafka Streams exception handler > for > >> >> >>> exceptions > >> >> >>> > >> >> > >> occurring > >> >> >>> > >> >> > >> > > during processing > >> >> >>> > >> >> > >> > > - KIP-1017: Health check endpoint for Kafka > Connect > >> >> >>> > >> >> > >> > > - KIP-1025: Optionally URL-encode clientID and > >> >> >>> clientSecret in > >> >> >>> > >> >> > >> > > authorization header > >> >> >>> > >> >> > >> > > - KIP-1005: Expose EarliestLocalOffset and > >> >> TieredOffset > >> >> >>> > >> >> > >> > > - KIP-950: Tiered Storage Disablement > >> >> >>> > >> >> > >> > > - KIP-956: Tiered Storage Quotas > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > Release notes for the 3.9.0 release: > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > > >> >> >>> > >> >> > >> >> >>> > >> > >> >> >>> > >> >> > >> > https://dist.apache.org/repos/dist/dev/kafka/3.9.0-rc5/RELEASE_NOTES.html > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > *** Please download, test and vote by October > 30, > >> >> 2024. > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > Kafka's KEYS file containing PGP keys we use to > >> sign > >> >> the > >> >> >>> > >> release: > >> >> >>> > >> >> > >> > > https://kafka.apache.org/KEYS > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Release artifacts to be voted upon (source and > >> >> binary): > >> >> >>> > >> >> > >> > > > >> >> https://dist.apache.org/repos/dist/dev/kafka/3.9.0-rc5/ > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Docker release artifacts to be voted upon: > >> >> >>> > >> >> > >> > > apache/kafka:3.9.0-rc5 > >> >> >>> > >> >> > >> > > apache/kafka-native:3.9.0-rc5 > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Maven artifacts to be voted upon: > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > > >> >> >>> > >> > >> >> >>> > >> >> > https://repository.apache.org/content/groups/staging/org/apache/kafka/ > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Javadoc: > >> >> >>> > >> >> > >> > > > >> >> >>> > >> > >> https://dist.apache.org/repos/dist/dev/kafka/3.9.0-rc5/javadoc/ > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Documentation: > >> >> >>> > >> >> > >> > > https://kafka.apache.org/39/documentation.html > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Protocol: > >> >> >>> > >> >> > >> > > https://kafka.apache.org/39/protocol.html > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Tag to be voted upon (off 3.9 branch) is the > >> >> 3.9.0-rc5 > >> >> >>> tag: > >> >> >>> > >> >> > >> > > > >> >> https://github.com/apache/kafka/releases/tag/3.9.0-rc5 > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > * Successful Docker Image Github Actions > Pipeline > >> >> for 3.9 > >> >> >>> > >> branch: > >> >> >>> > >> >> > >> > > Docker Build Test Pipeline (JVM): > >> >> >>> > >> >> > >> > > > >> >> https://github.com/apache/kafka/actions/runs/11535300463 > >> >> >>> > >> >> > >> > > Docker Build Test Pipeline (Native): > >> >> >>> > >> >> > >> > > > >> >> https://github.com/apache/kafka/actions/runs/11535328957 > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > Thanks to everyone who helped with this release > >> >> candidate, > >> >> >>> > >> either > >> >> >>> > >> >> by > >> >> >>> > >> >> > >> > > contributing code, testing, or documentation. > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > Regards, > >> >> >>> > >> >> > >> > > Colin > >> >> >>> > >> >> > >> > > > >> >> >>> > >> >> > >> > > >> >> >>> > >> >> > >> > >> >> >>> > >> >> > > >> >> >>> > >> >> > >> >> >>> > >> > >> >> >>> > > > >> >> >>> > > > >> >> >>> > > -- > >> >> >>> > > David Arthur > >> >> >>> > >> >> > >> > > >> > > > > > > -- > > [image: Aiven] <https://www.aiven.io> > > > > *Josep Prat* > > Open Source Engineering Director, *Aiven* > > josep.p...@aiven.io | +491715557497 > > aiven.io <https://www.aiven.io> | < > https://www.facebook.com/aivencloud> > > <https://www.linkedin.com/company/aiven/> < > https://twitter.com/aiven_io> > > *Aiven Deutschland GmbH* > > Alexanderufer 3-7, 10117 Berlin > > Geschäftsführer: Oskari Saarenmaa, Hannu Valtonen, > > Anna Richardson, Kenneth Chen > > Amtsgericht Charlottenburg, HRB 209739 B >