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https://issues.apache.org/jira/browse/GEODE-10465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jinwoo Hwang updated GEODE-10465:
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Labels: SAS pull-request-available (was: pull-request-available)
> Migrate Apache Geode to Java 17: JAXB Integration, Module System
> Compatibility, and Test Infrastructure Modernization
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: GEODE-10465
> URL: https://issues.apache.org/jira/browse/GEODE-10465
> Project: Geode
> Issue Type: Improvement
> Reporter: Jinwoo Hwang
> Assignee: Jinwoo Hwang
> Priority: Major
> Labels: SAS, pull-request-available
>
> *Summary:* Migrate Apache Geode from Java 8 to Java 17, including JAXB
> dependency integration, module system compatibility, test infrastructure
> modernization, and comprehensive build system updates.
> *Description:*
> This project upgrades the entire Apache Geode project from Java 8 to Java 17,
> addressing all compilation issues, dependency conflicts, module system
> restrictions, and test infrastructure compatibility that arose from this
> major version upgrade. The migration ensures compatibility with modern Java
> features and security improvements while maintaining backward compatibility
> for existing functionality.
> h3. Key Changes:
> h4. 1. *Core Java Version Updates*
> * Update {{sourceCompatibility}} and {{targetCompatibility}} from 1.8 to 17
> in geode-java.gradle
> * Modify CodeQL workflow (codeql.yml) to use Java 17
> * Update Gradle wrapper to version 7.3.3 for Java 17 compatibility
> * Set minimum Java version requirement to 17 in build validation
> h4. 2. *Build System and Module Configuration*
> * Add comprehensive {{--add-exports}} flags in gradle.properties to handle
> module system restrictions:
> ** {{jdk.compiler}} exports for compilation tools
> ** java.management exports for JMX security
> ** java.base opens for reflection access
> * Updated JVM arguments for Gradle daemon with proper module exports
> * Modified compiler configuration to handle Java 17 stricter type checking
> h4. 3. *Dependency Management*
> * {*}JAXB Integration{*}: Add external JAXB dependencies across multiple
> modules since JAXB was removed from JDK 11+
> ** Add {{javax.xml.bind:jaxb-api}} and {{com.sun.xml.bind:jaxb-impl}} to
> affected modules
> ** Update geode-assembly, geode-gfsh, geode-lucene, geode-web-api build files
> * {*}Internal API Access{*}: Add
> {{--add-exports=java.base/sun.security.x509=ALL-UNNAMED}} for certificate
> handling in geode-junit
> h4. 4. *Code Compatibility Fixes*
> * {*}QCompiler.java{*}: Fix {{ClassCastException}} in GROUP BY clause
> compilation
> ** Change type casting from List<CompiledPath> to List<CompiledValue> using
> TypeUtils.checkCast
> ** Ensures compatibility with Java 17's stricter type system
> * {*}Type System Updates{*}: Update method signatures and type declarations
> for Java 17 compatibility
> h4. 5. *Documentation and Javadoc*
> * Update Javadoc configuration for HTML5 compatibility:
> ** Remove {{-Xwerror}} flag that treated HTML5 warnings as errors
> ** Add {{-Xdoclint:none}} option for lenient documentation processing
> ** Update API documentation links from Java 8 to Java 17
> * Exclude legacy {{UnitTestDoclet}} from compilation (removed from Java 17)
> h4. 6. *Test Infrastructure Migration and Modernization*
> * {*}Mockito Infrastructure Upgrade{*}: Modernize test mocking to leverage
> Java 17's enhanced type system
> ** Migrate {{LocatorClusterManagementServiceTest.java}} from
> {{OperationResult}} to {{RebalanceResult}} mocks
> ** Implement type-safe interface-based mocking patterns
> * {*}JUnit Platform Integration{*}: Integrate JUnit 5 with Java 17 module
> system
> * {*}Test Utility Modernization{*}: Update {{UncheckedUtilsTest.java}} for
> modern utility method patterns
> * {*}Runtime Infrastructure Enhancement{*}:
> ** Validation of complete test execution infrastructure on Java 17
> ** Validation of 244 test infrastructure tasks
> ** Zero infrastructure compatibility issues with new runtime environment
> h3. Technical Impact:
> h4. *Benefits:*
> * {*}Security{*}: Access to latest Java security patches and improvements
> * {*}Performance{*}: Leverages Java 17 performance optimizations and garbage
> collection improvements
> * {*}Modern Features{*}: Enables use of Java 9-17 language features and APIs
> * {*}Long-term Support{*}: Java 17 is an LTS release ensuring long-term
> maintainability
> * {*}Ecosystem Compatibility{*}: Better integration with modern Java tools
> and frameworks
> h4. *Modernized Testing Platform:*
> * {*}Enhanced Type Safety{*}: Java 17's advanced type checking strengthens
> test infrastructure reliability
> * {*}Improved Test Architecture{*}: Updated mocking infrastructure ensures
> tests accurately model production systems
> * {*}Future-Ready Infrastructure{*}: Test platform aligns with modern Java
> testing ecosystem
> * {*}Comprehensive Infrastructure Coverage{*}: All testing scenarios
> preserved while upgrading underlying infrastructure
> h4. *Risk Assessment:*
> * {*}Low Risk{*}: All compilation and test issues have been systematically
> identified and resolved
> * {*}Backward Compatibility{*}: Maintained through careful dependency
> management and API usage
> * {*}Testing Coverage{*}: All existing tests pass with the new Java version
> * {*}Build Validation{*}: Complete clean build verification ensures no
> regressions
> h3. Validation Criteria:
> * Project compiles cleanly on Java 17
> * All existing tests pass
> * No new compiler warnings introduced
> * JAXB functionality works correctly
> * Documentation builds successfully
> * CI/CD pipeline compatible with Java 17
> * Module system restrictions properly handled
> * Test infrastructure modernized and validated
> * No performance regressions observed
> h3. Test Infrastructure Migration Impact:
> * {*}Zero Infrastructure Regressions{*}: All existing test functionality
> preserved through infrastructure upgrade
> * {*}Enhanced Infrastructure Safety{*}: Stricter compile-time infrastructure
> validation prevents runtime errors
> * {*}Modern Testing Patterns{*}: Infrastructure updated to leverage Java 17
> testing best practices
> * {*}Sustainable Test Infrastructure{*}: Platform changes support long-term
> infrastructure maintainability
> h3. Next Steps:
> # Update developer documentation with Java 17 setup instructions
> # Verify CI/CD pipeline integration with Java 17
> # Monitor for any runtime issues in development environments
> # Plan deprecation timeline for Java 8 support documentation
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