apache/incubator-gluten
Jan 2026 – Jan 2026
1 Month active
Languages Used
JavaSQLScalaXMLYAML
Technical Skills
Apache SparkBuild ConfigurationData ProcessingDependency ManagementJavaScala
Chang chen
PROFILE
Chang Chen
Worked on the apache/incubator-gluten repository to advance Spark 4.1 readiness while maintaining compatibility with Spark 4.0. Led the unified migration to Spark 4.1 by introducing Spark41Shims, updating code structure, and aligning the test suite across core modules. Addressed compatibility issues in gluten-core, gluten-substrait, and related backends, ensuring smooth runtime and test harness integration. Updated build configurations and CI workflows to support new dependency and Scala version requirements. Developed targeted unit tests for Spark 4.0 group-by and aggregate operations, balancing comprehensive validation with upgrade constraints. Utilized Java, Scala, and build configuration expertise to stabilize the backend development process.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
6Total
Bugs
0
Commits
6
Features
2
Lines of code
292,452
Activity Months1
Your Network
841 peopleSame Organization
@apache.org716
a.huberMember
Akira AjisakaMember
Andrzej BiałeckiMember
Arturo BernalMember
Abhishek KumarMember
Attila BukorMember
VampireAchaoMember
Abhishek ChennakaMember
Andreas DangelMember
Work History
January 2026
6 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary for Apache Gluten (apache/incubator-gluten): Focused on advancing Spark 4.1 readiness and reinforcing cross-version compatibility, with a parallel plan for preserving 4.0 coverage. Key achievements: - Spark 4.1 migration completed: unified migration to Spark 4.1 with Spark41Shims, code renames, compatibility shim, and aligned 4.1 test suite across core gluten modules. - Extensive 4.1 compatibility fixes: implemented fixes across gluten-core, gluten-substrait, backends-velox, shims, and GlutenUT to support Spark 4.1 runtime and test harness changes. - Build and test pipeline stabilization: updated build configuration and CI/test workflows to accommodate Spark 4.1 UT and related dependency changes (e.g., Parquet version, Scala version adjustments). - 4.0 Unit Tests for Gluten introduced: added unit tests for Spark 4.0 focusing on group-by and aggregate operations to verify Gluten compatibility during migration. - Test coverage and risk reduction: targeted test exclusions and test settings updates to balance comprehensive validation with Spark 4.1 compatibility constraints.
6 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary for Apache Gluten (apache/incubator-gluten): Focused on advancing Spark 4.1 readiness and reinforcing cross-version compatibility, with a parallel plan for preserving 4.0 coverage. Key achievements: - Spark 4.1 migration completed: unified migration to Spark 4.1 with Spark41Shims, code renames, compatibility shim, and aligned 4.1 test suite across core gluten modules. - Extensive 4.1 compatibility fixes: implemented fixes across gluten-core, gluten-substrait, backends-velox, shims, and GlutenUT to support Spark 4.1 runtime and test harness changes. - Build and test pipeline stabilization: updated build configuration and CI/test workflows to accommodate Spark 4.1 UT and related dependency changes (e.g., Parquet version, Scala version adjustments). - 4.0 Unit Tests for Gluten introduced: added unit tests for Spark 4.0 focusing on group-by and aggregate operations to verify Gluten compatibility during migration. - Test coverage and risk reduction: targeted test exclusions and test settings updates to balance comprehensive validation with Spark 4.1 compatibility constraints.
January 2026
Activity
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Quality Metrics
Correctness86.6%
Maintainability86.6%
Architecture86.6%
Performance86.6%
AI Usage30.0%
Skills & Technologies
Programming Languages
JavaSQLScalaXMLYAML
Technical Skills
Apache SparkBuild ConfigurationData ProcessingDependency ManagementJavaScalaSoftware DevelopmentSparkTestingUnit Testingbackend developmentsoftware testingunit testingversion control
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