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Posted to jira@kafka.apache.org by "dejan2609 (via GitHub)" <gi...@apache.org> on 2026/01/11 16:28:28 UTC
[PR] KAFKA-20061 `slf4j-api` version upgrade: 1.7.36 -->> 2.0.17; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
dejan2609 opened a new pull request, #21290:
URL: https://github.com/apache/kafka/pull/21290
:bulb: **For rationale - see these related links:**
- https://logging.apache.org/log4j/2.x/manual/installation.html#impl-core-bridge-slf4j
- https://github.com/apache/logging-log4j2/discussions/2475
- https://stackoverflow.com/questions/70528201/difference-between-slf4j-log4j12-and-log4j-slf4j-impl/70528383#70528383
- https://github.com/apache/logging-log4j2/blob/rel/2.25.3/log4j-perf-test/pom.xml#L48
**Action points:**
- `slf4j-api` version upgrade: 1.7.36 -->> 2.0.17
- `log4j-slf4j-impl` artifact has to be renamed to `log4j-slf4j2-impl`
**SLF4J version 2 release notes:**
- https://www.slf4j.org/faq.html#changesInVersion200
- https://www.slf4j.org/faq.html#compatibility
:information_source: For even more related links visit KAFKA-20061
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-4310532063
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3766256969
A label of 'needs-attention' was automatically added to this PR in order to raise the
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3782350331
A label of 'needs-attention' was automatically added to this PR in order to raise the
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3735166237
Thank you David @dajac for assigning a workflow run tag for this PR !
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3735049699
> And of course I forgot to update `LICENSE-binary` file 😅
Solved :slightly_smiling_face:
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3735023155
And ofcourse I forgot to update `LICENSE-binary` file :sweat_smile:
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-4293502214
This PR is being marked as stale since it has not had any activity in 90 days. If you
would like to keep this PR alive, please leave a comment asking for a review. If the PR has
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-5054427750
This PR is being marked as stale since it has not had any activity in 90 days. If you
would like to keep this PR alive, please leave a comment asking for a review. If the PR has
merge conflicts, update it with the latest from the base branch.
<p>
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3774508458
I just realized that related KIP exists for quite a while: https://cwiki.apache.org/confluence/display/KAFKA/KIP-1064%3A+Upgrade+slf4j+to+2.x
According to discussion this version upgrade is planned for Kafka 5.0
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-3735170926
Note: I performed usual smoke testing :arrow_down:
- generated distribution with `gradlew releaseTarGz`
- unpacked generated distribution `/kafka/core/build/distributions/kafka_2.13-4.3.0-SNAPSHOT.tgz`
- started Kafka cluster and tested as noted here: https://kafka.apache.org/quickstart/
- results look fine (and logs also :white_check_mark:): messages can be produced/consumed as expected
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 closed pull request #21290: KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl`
URL: https://github.com/apache/kafka/pull/21290
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "dejan2609 (via GitHub)" <gi...@apache.org>.
dejan2609 commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-5203302132
Closing PR; rationale: this is tracked elsewhere.
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Re: [PR] KAFKA-20061 `slf4j-api` version upgrade: 1 -->> 2; `log4j-slf4j-impl` artifact renamed to `log4j-slf4j2-impl` [kafka]
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #21290:
URL: https://github.com/apache/kafka/pull/21290#issuecomment-5076847873
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