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[improve][build] Allow building with Java 26 #26461

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Merged
merlimat merged 1 commit into from
Sep 5, 2026
Merged

[improve][build] Allow building with Java 26 #26461

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1 change: 1 addition & 0 deletions .github/workflows/pulsar-ci-flaky.yaml
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Expand Up @@ -44,6 +44,7 @@ on:
options:
- '25'
- '21'
- '26'
default: '25'
trace_test_resource_cleanup:
description: 'Collect thread & heap information before exiting a test JVM. When set to "on", thread dump and heap histogram will be collected. When set to "full", a heap dump will also be collected.'
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1 change: 1 addition & 0 deletions .github/workflows/pulsar-ci.yaml
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Expand Up @@ -39,6 +39,7 @@ on:
options:
- '25'
- '21'
- '26'
default: '25'
trace_test_resource_cleanup:
description: 'Collect thread & heap information before exiting a test JVM. When set to "on", thread dump and heap histogram will be collected. When set to "full", a heap dump will also be collected.'
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2 changes: 1 addition & 1 deletion ARCHITECTURE.md
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Expand Up @@ -92,7 +92,7 @@ concurrency model.
## Build infrastructure

Apache Pulsar uses a **Gradle** build (migrated from Maven via PIP-463; some older tooling and docs
elsewhere still reference Maven). The wrapper `./gradlew` requires **JDK 21 or 25** (bytecode targets
elsewhere still reference Maven). The wrapper `./gradlew` requires **JDK 21, 25 or 26** (bytecode targets
Java 17). See [`CONTRIBUTING.md` → Building](CONTRIBUTING.md#building) for the build and lint commands.

- `settings.gradle.kts` — all modules, organized in dependency tiers (Tier 0 has no internal deps,
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2 changes: 1 addition & 1 deletion CONTRIBUTING.md
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Expand Up @@ -29,7 +29,7 @@ workflow (build, test, PR, CI). For the big-picture module map and the Gradle bu

## Building

**JDK 21 or 25** is required to build `master` (bytecode targets Java 17; `-PskipJavaVersionCheck`
**JDK 21, 25 or 26** is required to build `master` (bytecode targets Java 17; `-PskipJavaVersionCheck`
bypasses the check); `zip` is also needed. Use the bundled wrapper `./gradlew` (Linux/macOS) or
`gradlew.bat` (Windows) — no separate Gradle install. See the
[build-tooling setup guide](https://pulsar.apache.org/contribute/setup-buildtools/) and the
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -172,7 +172,7 @@ for the Gradle build infrastructure and how to change build files.

| Pulsar Version | JDK Version |
|------------------|:--------------------------------------------------------------------------------:|
| master | [JDK 21](https://adoptium.net/en-GB/temurin/releases?version=21&os=any&arch=any) or [JDK 25](https://adoptium.net/en-GB/temurin/releases?version=25&os=any&arch=any) |
| master | [JDK 21](https://adoptium.net/en-GB/temurin/releases?version=21&os=any&arch=any), [JDK 25](https://adoptium.net/en-GB/temurin/releases?version=25&os=any&arch=any) or [JDK 26](https://adoptium.net/en-GB/temurin/releases?version=26&os=any&arch=any) |
| 4.0+ | [JDK 21](https://adoptium.net/en-GB/temurin/releases?version=21&os=any&arch=any) |
| 2.11 + | [JDK 17](https://adoptium.net/en-GB/temurin/releases?version=17&os=any&arch=any) |
| 2.8 / 2.9 / 2.10 | [JDK 11](https://adoptium.net/en-GB/temurin/releases?version=11&os=any&arch=any) |
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10 changes: 6 additions & 4 deletions settings.gradle.kts
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Expand Up @@ -37,7 +37,7 @@ dependencyResolutionManagement {
}
}

// override docker-jdk version with -PdockerJavaVersion=21|25
// override docker-jdk version with -PdockerJavaVersion=21|25|26
val overrideDockerJavaVersion = settings.providers.gradleProperty("dockerJavaVersion")
if (overrideDockerJavaVersion.isPresent) {
versionCatalogs {
Expand All @@ -50,11 +50,13 @@ dependencyResolutionManagement {

rootProject.name = "pulsar"

// Running this build requires Java 21 or 25. Version check can be skipped with -PskipJavaVersionCheck parameter.
// Running this build requires Java 21, 25 or 26. Version check can be skipped with -PskipJavaVersionCheck parameter.
val javaVersion = providers.provider { JavaVersion.current() }
val statisfiedJavaVersion = javaVersion.map { it == JavaVersion.VERSION_21 || it == JavaVersion.VERSION_25 }
val statisfiedJavaVersion = javaVersion.map {
it == JavaVersion.VERSION_21 || it == JavaVersion.VERSION_25 || it == JavaVersion.VERSION_26
}
require(providers.gradleProperty("skipJavaVersionCheck").isPresent || statisfiedJavaVersion.get()) {
"This build requires Java 21 or 25, but is running on Java ${javaVersion.get()}. Pass -PskipJavaVersionCheck to skip this check."
"This build requires Java 21, 25 or 26, but is running on Java ${javaVersion.get()}. Pass -PskipJavaVersionCheck to skip this check."
}

// ──────────────────────────────────────────────────────────────────────────────
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