xupefei/delta
Nov 2024 – Jan 2025
2 Months active
Languages Used
ScalaJava
Technical Skills
Test AutomationUnit TestingData EngineeringIcebergScalaSpark
Hao Jiang
PROFILE
Hao Jiang
Worked on the xupefei/delta repository to enhance data integration and test reliability in Spark-based environments. Delivered end-to-end Iceberg data integration by enabling direct access to DataFiles from ManifestFiles, adding Spark serialization wrappers for Iceberg objects, and improving partition value handling, all implemented in Scala and Java. Addressed robustness in Merge-On-Read table scenarios to prevent data inconsistencies. Additionally, stabilized the test suite by disabling a flaky assertion in the archived timeline test, improving CI reliability without altering production behavior. Demonstrated a disciplined approach to test automation and unit testing, focusing on maintainable code and risk mitigation throughout the development process.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
583
Activity Months2
Your Network
331 peopleSame Organization
@databricks.com299
Work History
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for xupefei/delta focusing on delivering business value through robust data integration and maintainable code improvements. Delivered end-to-end Iceberg data integration enhancements with Spark serialization compatibility, enabling seamless processing of Iceberg DataFiles via ManifestFiles and improving partition handling. Also strengthened robustness around Merge-On-Read table scenarios to prevent data inconsistencies in edge cases.
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for xupefei/delta focusing on delivering business value through robust data integration and maintainable code improvements. Delivered end-to-end Iceberg data integration enhancements with Spark serialization compatibility, enabling seamless processing of Iceberg DataFiles via ManifestFiles and improving partition handling. Also strengthened robustness around Merge-On-Read table scenarios to prevent data inconsistencies in edge cases.
January 2025
November 2024
1 Commits
Nov 1, 2024November 2024 Monthly Summary for xupefei/delta: Focused on stabilizing the test suite and preserving production behavior while addressing flaky tests in Spark-based UniForm Hudi integration. Implemented a non-functional change that disables a flaky assertion in the archived timeline test to improve CI reliability and developer velocity. All work scoped to test infra within the Delta repository.
November 2024
1 Commits
Nov 1, 2024November 2024 Monthly Summary for xupefei/delta: Focused on stabilizing the test suite and preserving production behavior while addressing flaky tests in Spark-based UniForm Hudi integration. Implemented a non-functional change that disables a flaky assertion in the archived timeline test to improve CI reliability and developer velocity. All work scoped to test infra within the Delta repository.
Activity
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Quality Metrics
Correctness70.0%
Maintainability80.0%
Architecture70.0%
Performance70.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaScala
Technical Skills
Data EngineeringIcebergScalaSparkTest AutomationUnit Testing
Repositories Contributed To
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