KAFKA-16564: Apply `Xlint` to java code in core module #16965

m1a2st · 2024-08-22T13:19:21Z

Jira: https://issues.apache.org/jira/browse/KAFKA-16564

We should apply the same xlint to java code in core module before we complete the code migration.

Committer Checklist (excluded from commit message)

Verify design and implementation
Verify test coverage and CI build status
Verify documentation (including upgrade notes)

chia7712 · 2024-09-15T19:10:01Z

build.gradle

-    if (name == "compileTestJava" || name == "compileTestScala")
+    if (name == "compileTestJava" || name == "compileTestScala") {
      options.compilerArgs << "-parameters"
+    } else if (name == "compileJava") {


please change compileJava to compileScala to add the args to "scala compiler"

chia7712 · 2024-10-07T09:47:45Z

@m1a2st could you please rebase code and fix conflicts?

# Conflicts: # core/src/test/java/kafka/admin/ConfigCommandTest.java

m1a2st · 2024-10-07T13:20:03Z

I have been fix it, Thanks for your reminder.

chia7712 · 2024-10-15T06:50:47Z

@m1a2st could you please rebase code and fix conflicts?

# Conflicts: # core/src/main/java/kafka/server/handlers/DescribeTopicPartitionsRequestHandler.java

chia7712 · 2024-10-18T04:05:25Z

build.gradle

+      options.compilerArgs << "-Xlint:-serial"
+      options.compilerArgs << "-Xlint:-try"
+      options.compilerArgs << "-Werror"
+      options.compilerArgs << "-Xlint:-options"


why we need this option?

The -Xlint:-options is "Warns about the issues relating to use of command line options" . doc
I think we don't need this option, I will remove it.

chia7712

@m1a2st thanks for your patch

chia7712 · 2024-10-19T07:56:15Z

build.gradle

-    if (name == "compileTestJava" || name == "compileTestScala")
+    if (name == "compileTestJava" || name == "compileTestScala") {
      options.compilerArgs << "-parameters"
+    } else if (name == "compileScala") {


Could you please config both scala and java? for example:

if (name == "compileTestJava" || name == "compileTestScala") { options.compilerArgs << "-parameters" } else if (name == "compileJava" || name == "compileScala") { options.compilerArgs << "-Xlint:all" if (!project.path.startsWith(":connect") && !project.path.startsWith(":storage")) options.compilerArgs << "-Xlint:-rawtypes" options.compilerArgs << "-encoding" << "UTF-8" options.compilerArgs << "-Xlint:-rawtypes" options.compilerArgs << "-Xlint:-serial" options.compilerArgs << "-Xlint:-try" options.compilerArgs << "-Werror" options.compilerArgs += ["--release", String.valueOf(minJavaVersion)] }

chia7712 · 2024-10-19T07:56:36Z

build.gradle

  addParametersForTests = { name, options ->
    // -parameters generates arguments with parameter names in TestInfo#getDisplayName.
    // ref: https://github.com/junit-team/junit5/blob/4c0dddad1b96d4a20e92a2cd583954643ac56ac0/junit-jupiter-params/src/main/java/org/junit/jupiter/params/ParameterizedTest.java#L161-L164
-    if (name == "compileTestJava" || name == "compileTestScala")


Additionally, addParametersForTests -> configureJavaCompiler

m1a2st · 2024-10-19T14:24:31Z

...ct/runtime/src/test/java/org/apache/kafka/connect/runtime/isolation/SynchronizationTest.java

-            SecurityManager s = System.getSecurityManager();
-            Thread t = new Thread((s != null) ? s.getThreadGroup() :
-                Thread.currentThread().getThreadGroup(), r,
+            Thread t = new Thread(Thread.currentThread().getThreadGroup(), r,


Java 17 is deprecated the SecurityManager, see doc

Could you please use suppression to fix it? we can go back to dig in it later

chia7712 · 2024-10-19T18:01:20Z

@m1a2st please fix build error

chia7712

@m1a2st thanks for this patch

chia7712 · 2024-10-22T18:34:05Z

build.gradle

+      if (!project.path.startsWith(":connect") && !project.path.startsWith(":storage"))
+        options.compilerArgs << "-Xlint:-rawtypes"
+      options.compilerArgs << "-encoding" << "UTF-8"
+      options.compilerArgs << "-Xlint:-rawtypes"


duplicate config?

configureJavaCompiler also use in the tasks.withType(JavaCompile) and subprojects, it is dulpicate in the tasks.withType(JavaCompile)code block so I remove it which in tasks.withType(JavaCompile)

chia7712 · 2024-10-22T18:35:27Z

...va/org/apache/kafka/common/security/ssl/CommonNameLoggingTrustManagerFactoryWrapperTest.java

                    wrappedCert.hasUnsupportedCriticalExtension());
            // We have just generated a valid test certificate, it should still be valid now
            assertEquals(cert.getBasicConstraints(), wrappedCert.getBasicConstraints());
-            assertEquals(cert.getIssuerDN(), wrappedCert.getIssuerDN());


why we need those changes?

it seens this deprecated method won't cause build error, I will revert it

chia7712 · 2024-10-25T10:49:44Z

build.gradle

    scalaCompileOptions.additionalParameters += ["-Xfatal-warnings"]

    scalaCompileOptions.additionalParameters += ["-release", String.valueOf(minJavaVersion)]
    options.compilerArgs += ["--release", String.valueOf(minJavaVersion)]


Could you please remove this duplicate config?

Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

m1a2st force-pushed the gh-KAFKA-16564 branch from e4afe80 to ff7430a Compare August 25, 2024 08:04

m1a2st force-pushed the gh-KAFKA-16564 branch 2 times, most recently from d3d4aa0 to dc7924f Compare September 10, 2024 19:30

m1a2st added 5 commits September 13, 2024 15:55

setting -Xlint in ScalaCompile

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m1a2st force-pushed the gh-KAFKA-16564 branch from 91b39ca to d7c6761 Compare September 14, 2024 06:40

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chia7712 reviewed Sep 15, 2024

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m1a2st added 3 commits September 16, 2024 21:34

wip

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change to xlint all

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fix build gradle

0bf9653

m1a2st marked this pull request as ready for review September 17, 2024 05:37

Merge branch 'trunk' into gh-KAFKA-16564

ec8b3bf

# Conflicts: # core/src/test/java/kafka/admin/ConfigCommandTest.java

github-actions bot added core Kafka Broker small Small PRs labels Oct 7, 2024

fix build error

829d996

Merge branch 'trunk' into gh-KAFKA-16564

0be3b2b

# Conflicts: # core/src/main/java/kafka/server/handlers/DescribeTopicPartitionsRequestHandler.java

github-actions bot added the build Gradle build or GitHub Actions label Oct 15, 2024

m1a2st added the ci-approved label Oct 15, 2024

chia7712 reviewed Oct 18, 2024

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addressed by comments remove xlint options

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chia7712 mentioned this pull request Oct 19, 2024

MINOR: Set sourceCompatibility/targetCompatibility properties to Scala Compile task #17546

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m1a2st commented Oct 19, 2024

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update by comments

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m1a2st force-pushed the gh-KAFKA-16564 branch from 0701e8c to 99dd032 Compare October 20, 2024 00:35

m1a2st added 3 commits October 20, 2024 11:39

update RemoteLogManager

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Merge branch 'trunk' into gh-KAFKA-16564

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remove java compile argument

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chia7712 reviewed Oct 22, 2024

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m1a2st added 2 commits October 23, 2024 03:03

revert cert deprecated method

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addressed comments

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chia7712 approved these changes Oct 25, 2024

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chia7712 reviewed Oct 25, 2024

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addressed comment

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chia7712 merged commit 09d76f9 into apache:trunk Oct 25, 2024

abhishekgiri23 pushed a commit to abhishekgiri23/kafka that referenced this pull request Nov 2, 2024

KAFKA-16564 Apply Xlint to java code in core module (apache#16965)

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Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

chiacyu pushed a commit to chiacyu/kafka that referenced this pull request Nov 30, 2024

KAFKA-16564 Apply Xlint to java code in core module (apache#16965)

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Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

tedyu pushed a commit to tedyu/kafka that referenced this pull request Jan 6, 2025

KAFKA-16564 Apply Xlint to java code in core module (apache#16965)

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Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

chia7712 mentioned this pull request Oct 12, 2025

MINOR: fix some tasks in build.gradle after Gradle version upgrade 8 -->> 9 #20684

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KAFKA-16564: Apply Xlint to java code in core module #16965

KAFKA-16564: Apply Xlint to java code in core module #16965

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m1a2st commented Aug 22, 2024

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chia7712 commented Oct 7, 2024

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chia7712 commented Oct 19, 2024

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KAFKA-16564: Apply `Xlint` to java code in core module #16965

KAFKA-16564: Apply `Xlint` to java code in core module #16965