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https://issues.apache.org/jira/browse/KAFKA-19769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18028203#comment-18028203
]
Gaurav Narula commented on KAFKA-19769:
---------------------------------------
[~dejan2609] Thanks for reporting this. I think this is because
[TestUtils::CertificateBuilder|https://github.com/dejan2609/kafka/blob/a21a1b0a84b577724d0030a02b2ad7f2d08890e2/clients/src/test/java/org/apache/kafka/test/TestSslUtils.java#L402]'s
constructor uses {{SHA1withRSA}} as the signature algorithm which is likely
disabled by default. Please try updating the signature algorithm to say
{{SHA256withRSA}}
> [Java 25] few tests are failling (class:
> clients/org.apache.kafka.common.network.SslTransportLayerTest)
> -------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-19769
> URL: https://issues.apache.org/jira/browse/KAFKA-19769
> Project: Kafka
> Issue Type: Task
> Components: clients
> Reporter: Dejan Stojadinović
> Priority: Major
> Labels: Java25, help-wanted, test-fail, test-failure,
> test-failure-fresh, up-for-grabs, upgrade
> Attachments: Screenshot from 2025-10-07 19-59-32.png
>
>
> {panel:title=Notes:|borderStyle=dashed|borderColor=#cccccc|titleBGColor=#f7d6c1|bgColor=#ffffce}
> * (!) this ticket blocks KAFKA-19664 *_Support building with Java 25 (LTS
> release)_*
> * (on) looks similar to: KAFKA-15117
> *_SslTransportLayerTest.testValidEndpointIdentificationCN fails with Java 20
> & 21_*{panel}
> *Reproducer:*
> * use this branch: [https://github.com/dejan2609/kafka/tree/KAFKA-19664]
> (i.e. this PR: [https://github.com/apache/kafka/pull/20561])
> * execute: *./gradlew :clients:test --tests
> "org.apache.kafka.common.network.SslTransportLayerTest" -i* and change Java
> versions
> * test results:
> ** {*}Java 17{*}: (/)
> ** J{*}ava 24{*}: (/)
> ** {*}Java 25{*}: 159 tests completed, *8 failed* (x)
> *Test results on Github CI:*
> !Screenshot from 2025-10-07 19-59-32.png!
> *Test results locally:*
> {code:java}
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ git log -3 --oneline
> a37616a1eb (HEAD -> KAFKA-19664, origin/KAFKA-19664) KAFKA-19664 Support
> building with Java 25 (LTS release)
> c6bbbbe24d KAFKA-19174 Gradle version upgrade 8 -->> 9 (#19513)
> f5a87b3703 KAFKA-19748: Add a note in docs about memory leak in Kafka Streams
> 4.1.0 (#20639)
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ java -version
> openjdk version "17.0.16" 2025-07-15
> OpenJDK Runtime Environment Temurin-17.0.16+8 (build 17.0.16+8)
> OpenJDK 64-Bit Server VM Temurin-17.0.16+8 (build 17.0.16+8, mixed mode,
> sharing)
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ ./gradlew :clients:test --tests
> "org.apache.kafka.common.network.SslTransportLayerTest" -q
> Starting build with version 4.2.0-SNAPSHOT (commit id a37616a1) using Gradle
> 9.1.0, Java 17 and Scala 2.13.17
> Build properties: ignoreFailures=false, maxParallelForks=8,
> maxScalacThreads=8, maxTestRetries=0
> MessageGenerator: processed 197 Kafka message JSON file(s).
> MessageGenerator: processed 4 Kafka message JSON file(s).
> Note: Some input files use or override a deprecated API.
> Note: Recompile with -Xlint:deprecation for details.
> OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader
> classes because bootstrap classpath has been appended
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ sdk use java 24.0.2-tem
> Using java version 24.0.2-tem in this shell.
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ java -version
> openjdk version "24.0.2" 2025-07-15
> OpenJDK Runtime Environment Temurin-24.0.2+12 (build 24.0.2+12)
> OpenJDK 64-Bit Server VM Temurin-24.0.2+12 (build 24.0.2+12, mixed mode,
> sharing)
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ ./gradlew :clients:test --tests
> "org.apache.kafka.common.network.SslTransportLayerTest" -q
> Starting build with version 4.2.0-SNAPSHOT (commit id a37616a1) using Gradle
> 9.1.0, Java 24 and Scala 2.13.17
> Build properties: ignoreFailures=false, maxParallelForks=8,
> maxScalacThreads=8, maxTestRetries=0
> MessageGenerator: processed 197 Kafka message JSON file(s).
> MessageGenerator: processed 4 Kafka message JSON file(s).
> Note: Some input files use or override a deprecated API.
> Note: Recompile with -Xlint:deprecation for details.
> OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader
> classes because bootstrap classpath has been appended
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ sdk use java 25-tem
> Using java version 25-tem in this shell.
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ java -version
> openjdk version "25" 2025-09-16 LTS
> OpenJDK Runtime Environment Temurin-25+36 (build 25+36-LTS)
> OpenJDK 64-Bit Server VM Temurin-25+36 (build 25+36-LTS, mixed mode, sharing)
> dejan@dejan-HP-ProBook-450-G7:~/kafka$ ./gradlew :clients:test --tests
> "org.apache.kafka.common.network.SslTransportLayerTest" -q
> Starting build with version 4.2.0-SNAPSHOT (commit id a37616a1) using Gradle
> 9.1.0, Java 25 and Scala 2.13.17
> Build properties: ignoreFailures=false, maxParallelForks=8,
> maxScalacThreads=8, maxTestRetries=0
> MessageGenerator: processed 197 Kafka message JSON file(s).
> MessageGenerator: processed 4 Kafka message JSON file(s).
> Note: Some input files use or override a deprecated API.
> Note: Recompile with -Xlint:deprecation for details.
> org.apache.kafka.common.network.SslTransportLayerTest.testListenerConfigOverride(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testListenerConfigOverride(Args)[1].test.stdout
> OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader
> classes because bootstrap classpath has been appended
> org.apache.kafka.common.network.SslTransportLayerTest.testInterBrokerSslConfigValidation(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testInterBrokerSslConfigValidation(Args)[1].test.stdout
> org.apache.kafka.common.network.SslTransportLayerTest.testServerTruststoreDynamicUpdate(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testServerTruststoreDynamicUpdate(Args)[1].test.stdout
> org.apache.kafka.common.network.SslTransportLayerTest.testECKeyPair(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testECKeyPair(Args)[1].test.stdout
> org.apache.kafka.common.network.SslTransportLayerTest.testPemFiles(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testPemFiles(Args)[1].test.stdout
> org.apache.kafka.common.network.SslTransportLayerTest.testClientAuthenticationRequiredValidProvided(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testClientAuthenticationRequiredValidProvided(Args)[1].test.stdout
> org.apache.kafka.common.network.SslTransportLayerTest.testDsaKeyPair(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testDsaKeyPair(Args)[1].test.stdout
> org.apache.kafka.common.network.SslTransportLayerTest.testPemFilesWithoutClientKeyPassword(Args)[1]
> failed, log available in
> /home/dejan/kafka/clients/build/reports/testOutput/org.apache.kafka.common.network.SslTransportLayerTest.testPemFilesWithoutClientKeyPassword(Args)[1].test.stdout
> 159 tests completed, 8 failed
> FAILURE: Build failed with an exception.
> * What went wrong:
> Execution failed for task ':clients:test'.
> > There were failing tests. See the report at:
> > file:///home/dejan/kafka/clients/build/reports/tests/test/index.html
> BUILD FAILED in 8m 22s
> dejan@dejan-HP-ProBook-450-G7:~/kafka$
> {code}
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