apache/iceberg-cpp
May 2025 – Oct 2025
5 Months active
Languages Used
C++CMakeAvroC
Technical Skills
Apache ArrowAvroBuild System ConfigurationBuild SystemsC++C++ Development
dongxiao
PROFILE
Dongxiao
Over five months, this developer contributed to the apache/iceberg-cpp repository by building core C++ infrastructure for Iceberg table metadata management and data streaming. They implemented gzip decompression for metadata, integrated Avro streaming I/O with Arrow, and delivered manifest reading and writing support across multiple Iceberg metadata versions. Their work included designing extensible writer interfaces, applying the adapter pattern for versioned manifest handling, and enabling Avro and Parquet metadata serialization. Using C++, Avro, and Arrow, they focused on robust file I/O, data serialization, and build system integration, establishing a scalable foundation for multi-format data pipelines and reliable metadata interoperability.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
12Total
Bugs
0
Commits
12
Features
6
Lines of code
5,696
Activity Months5
Your Network
27 people
Work History
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Implemented manifest metadata writing enhancements with versioned adapters and Avro metadata support for apache/iceberg-cpp. Delivered adapters and files enabling end-to-end manifest and manifest-list writing across Iceberg metadata versions v1/v2/v3, with improved Avro manifest metadata serialization and support for custom properties. Key commits include 8906ff3e3a34f7f34ad8ca6d6f25388e80f32830 and 51aa74801c3ce206157a118f19dd365109142add. Business value: more reliable, version-tolerant manifest metadata generation, reducing downstream inconsistencies and accelerating upgrade paths. Technical achievements include design and integration of manifest/manifest-list writer adapters, Avro/Parquet metadata handling, end-to-end workflow enablement, and demonstrated proficiency in C++ development, metadata engineering, and data-format interoperability.
2 Commits • 1 Features
Oct 1, 2025October 2025: Implemented manifest metadata writing enhancements with versioned adapters and Avro metadata support for apache/iceberg-cpp. Delivered adapters and files enabling end-to-end manifest and manifest-list writing across Iceberg metadata versions v1/v2/v3, with improved Avro manifest metadata serialization and support for custom properties. Key commits include 8906ff3e3a34f7f34ad8ca6d6f25388e80f32830 and 51aa74801c3ce206157a118f19dd365109142add. Business value: more reliable, version-tolerant manifest metadata generation, reducing downstream inconsistencies and accelerating upgrade paths. Technical achievements include design and integration of manifest/manifest-list writer adapters, Avro/Parquet metadata handling, end-to-end workflow enablement, and demonstrated proficiency in C++ development, metadata engineering, and data-format interoperability.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025: Delivered foundational manifest writing support for Iceberg C++. Implemented an extensible design with ManifestAdapter base class and concrete v1/v2/v3 metadata adapters, along with ManifestWriter and ManifestListWriter to emit manifest entries and manifest files. No major bugs fixed this month. Overall impact: enables versioned metadata handling, improves data integrity and interoperability for Iceberg datasets, and provides a scalable foundation for future manifest-related features. Technologies/skills demonstrated: C++, OO design, adapter pattern, metadata versioning, and I/O for manifest data.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025: Delivered foundational manifest writing support for Iceberg C++. Implemented an extensible design with ManifestAdapter base class and concrete v1/v2/v3 metadata adapters, along with ManifestWriter and ManifestListWriter to emit manifest entries and manifest files. No major bugs fixed this month. Overall impact: enables versioned metadata handling, improves data integrity and interoperability for Iceberg datasets, and provides a scalable foundation for future manifest-related features. Technologies/skills demonstrated: C++, OO design, adapter pattern, metadata versioning, and I/O for manifest data.
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 highlights: Delivered foundational C++ writer architecture for Apache Iceberg, introducing abstract interfaces for file writers and manifest writers to enable multi-format data writing and manifest management. Implemented Avro writer and registered it in the writer factory, enabling immediate Avro data support. Build system updates were completed to integrate the new interfaces and Avro writer. No major bugs fixed this month in this scope. Overall impact: established essential plumbing for future formats, improving data ingestion flexibility and paving the way for broader platform parity. Technologies demonstrated: C++ interface design, factory pattern, Avro integration, and build-system orchestration. Business value: accelerates multi-format data pipelines, reduces future integration effort, and enhances reliability of data writing and manifest handling.
2 Commits • 1 Features
Aug 1, 2025August 2025 highlights: Delivered foundational C++ writer architecture for Apache Iceberg, introducing abstract interfaces for file writers and manifest writers to enable multi-format data writing and manifest management. Implemented Avro writer and registered it in the writer factory, enabling immediate Avro data support. Build system updates were completed to integrate the new interfaces and Avro writer. No major bugs fixed this month in this scope. Overall impact: established essential plumbing for future formats, improving data ingestion flexibility and paving the way for broader platform parity. Technologies demonstrated: C++ interface design, factory pattern, Avro integration, and build-system orchestration. Business value: accelerates multi-format data pipelines, reduces future integration effort, and enhances reliability of data writing and manifest handling.
August 2025
July 2025
4 Commits • 1 Features
Jul 1, 2025July 2025 summary: Delivered Iceberg manifest reading support in the cpp backend, enabling robust access to manifest and manifest list files to power accurate data scanning and planning for Iceberg tables. Implemented new manifest and manifest-list readers, updated Avro parsing, added tests, and integrated partition schema with readers to ensure correct query planning. Also introduced operator== for Literal/Manifest/ManifestList to improve equality semantics in manifest handling. No major bugs reported this month; the work directly enables end-to-end data access and improves query planning performance on large datasets.
July 2025
4 Commits • 1 Features
Jul 1, 2025July 2025 summary: Delivered Iceberg manifest reading support in the cpp backend, enabling robust access to manifest and manifest list files to power accurate data scanning and planning for Iceberg tables. Implemented new manifest and manifest-list readers, updated Avro parsing, added tests, and integrated partition schema with readers to ensure correct query planning. Also introduced operator== for Literal/Manifest/ManifestList to improve equality semantics in manifest handling. No major bugs reported this month; the work directly enables end-to-end data access and improves query planning performance on large datasets.
May 2025
3 Commits • 2 Features
May 1, 2025May 2025: Implemented compression support with gzip decompression and integrated Avro streaming I/O with Arrow streams for the apache/iceberg-cpp project. These changes enhance metadata handling, enable efficient streaming, and improve build-system integration.
3 Commits • 2 Features
May 1, 2025May 2025: Implemented compression support with gzip decompression and integrated Avro streaming I/O with Arrow streams for the apache/iceberg-cpp project. These changes enhance metadata handling, enable efficient streaming, and improve build-system integration.
May 2025
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Quality Metrics
Correctness91.6%
Maintainability87.6%
Architecture90.0%
Performance78.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
AvroCC++CMake
Technical Skills
Apache ArrowApache AvroApache IcebergArrowAvroBuild System ConfigurationBuild SystemsC++C++ DevelopmentCompressionData EngineeringData SerializationData StreamingData StructuresDependency Management
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