apache/paimon
Dec 2024 – Oct 2025
11 Months active
Languages Used
JavaMarkdownOpenAPIYAMLSQLScalahtmlHTML
Technical Skills
API DesignAPI DevelopmentAuthenticationBackend DevelopmentCatalog APICatalog Management
jerry
PROFILE
Jerry
Lining Jiang developed core REST API and data management features for the apache/paimon repository, focusing on scalable catalog operations, authentication, and robust file handling. He engineered end-to-end REST Catalog capabilities, integrating authentication systems, partition and view management, and snapshot commit workflows using Java and Python. His work included two-phase commit patterns, Spark and Flink integration, and support for multiple file formats such as CSV and Parquet. Jiang addressed reliability through error handling, token refresh logic, and atomic file writes, while also modernizing Python clients and enhancing documentation. The solutions delivered improved data governance, operational safety, and cross-platform interoperability.
Overall Statistics
Feature vs Bugs
85%Features
Repository Contributions
89Total
Bugs
7
Commits
89
Features
39
Lines of code
54,673
Activity Months11
Your Network
413 peopleSame Organization
@alibaba-inc.com271
Work History
October 2025
6 Commits • 3 Features
Oct 1, 2025In 2025-10, delivered a focused set of enhancements for Apache Paimon with clear business value in data ingestion reliability, query performance, and storage integration. The work spans core format-table capabilities, Spark integration, Python blob data type support, and storage path handling, underpinned by a targeted bug fix to ensure read correctness. Key features delivered: - Core Format Table Write: rolling file writes, two-phase commits, and Spark batch write integration, enabling reliable, scalable data ingestion for format tables. - Spark Filter Pushdown for Paimon Tables: early-filter application to reduce data scanned and improve query performance. - BLOB Data Handling Enhancements (Python) and Descriptor-based Blob Writes: Python blob type support, descriptor-based paths, and URI handling for external storage. Major bugs fixed: - Format Table Read Filter Predicate Projection Bug: corrected row type handling to ensure filters are applied accurately during reads. Overall impact and accomplishments: - Increased data ingestion reliability and throughput for large-scale pipelines; improved analytics performance through pushdown; expanded storage interoperability with Python and descriptor-based blob handling; and ensured read accuracy through targeted bug fixes. Technologies/skills demonstrated: - Spark integration, two-phase commit patterns, rolling file writes; predicate pushdown; Python blob support; descriptor-based blob paths and external storage URI handling; robust bug-fix discipline.
6 Commits • 3 Features
Oct 1, 2025In 2025-10, delivered a focused set of enhancements for Apache Paimon with clear business value in data ingestion reliability, query performance, and storage integration. The work spans core format-table capabilities, Spark integration, Python blob data type support, and storage path handling, underpinned by a targeted bug fix to ensure read correctness. Key features delivered: - Core Format Table Write: rolling file writes, two-phase commits, and Spark batch write integration, enabling reliable, scalable data ingestion for format tables. - Spark Filter Pushdown for Paimon Tables: early-filter application to reduce data scanned and improve query performance. - BLOB Data Handling Enhancements (Python) and Descriptor-based Blob Writes: Python blob type support, descriptor-based paths, and URI handling for external storage. Major bugs fixed: - Format Table Read Filter Predicate Projection Bug: corrected row type handling to ensure filters are applied accurately during reads. Overall impact and accomplishments: - Increased data ingestion reliability and throughput for large-scale pipelines; improved analytics performance through pushdown; expanded storage interoperability with Python and descriptor-based blob handling; and ensured read accuracy through targeted bug fixes. Technologies/skills demonstrated: - Spark integration, two-phase commit patterns, rolling file writes; predicate pushdown; Python blob support; descriptor-based blob paths and external storage URI handling; robust bug-fix discipline.
October 2025
September 2025
12 Commits • 2 Features
Sep 1, 2025September 2025 performance highlights for apache/paimon: Implemented end-to-end format table reading and integration with enhanced partition handling, broadened Spark/Flink interoperability, and introduced atomic, two-phase commit file writes. Fixed critical binary writer compilation issues and improved format-table query performance with partition pruning and CSV parse mode support.
September 2025
12 Commits • 2 Features
Sep 1, 2025September 2025 performance highlights for apache/paimon: Implemented end-to-end format table reading and integration with enhanced partition handling, broadened Spark/Flink interoperability, and introduced atomic, two-phase commit file writes. Fixed critical binary writer compilation issues and improved format-table query performance with partition pruning and CSV parse mode support.
August 2025
11 Commits • 5 Features
Aug 1, 2025Month: 2025-08 — Apache/paimon. This month delivered end-to-end enhancements across storage path interpretation, authentication, REST-based commit workflows, and data format capabilities, while modernizing the Python codebase. These changes improve data accessibility, security, and maintainability, enabling faster ingestion and more flexible storage configurations.
11 Commits • 5 Features
Aug 1, 2025Month: 2025-08 — Apache/paimon. This month delivered end-to-end enhancements across storage path interpretation, authentication, REST-based commit workflows, and data format capabilities, while modernizing the Python codebase. These changes improve data accessibility, security, and maintainability, enabling faster ingestion and more flexible storage configurations.
August 2025
July 2025
8 Commits • 4 Features
Jul 1, 2025July 2025 monthly summary for apache/paimon: Delivered a Python REST API client with major API enhancements, PVFS integration with caching in the Python client, REST catalog alter table support for format tables, and documentation on manually expiring snapshots. Expanded test coverage and robustness through updated tests and error handling. No explicit critical bugs reported; focus on feature delivery, reliability, and user enablement.
July 2025
8 Commits • 4 Features
Jul 1, 2025July 2025 monthly summary for apache/paimon: Delivered a Python REST API client with major API enhancements, PVFS integration with caching in the Python client, REST catalog alter table support for format tables, and documentation on manually expiring snapshots. Expanded test coverage and robustness through updated tests and error handling. No explicit critical bugs reported; focus on feature delivery, reliability, and user enablement.
June 2025
5 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for apache/paimon focused on reducing boilerplate, strengthening API reliability, and improving developer guidance. Major refactor of snapshot commit creation eliminates factory classes by directly instantiating CatalogSnapshotCommit and RenamingSnapshotCommit to simplify flow and reduce maintenance. REST API improvements for Functions include robust validation, pagination, and improved URI handling, enhancing developer experience and integration with external catalogs. Documentation updates clarify VARBINARY support for rbm32/rbm64 aggregation functions to improve user guidance and avoid misinterpretation. These changes collectively accelerate delivery, improve API reliability, and provide clearer data-type guidance for users and integrators.
5 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for apache/paimon focused on reducing boilerplate, strengthening API reliability, and improving developer guidance. Major refactor of snapshot commit creation eliminates factory classes by directly instantiating CatalogSnapshotCommit and RenamingSnapshotCommit to simplify flow and reduce maintenance. REST API improvements for Functions include robust validation, pagination, and improved URI handling, enhancing developer experience and integration with external catalogs. Documentation updates clarify VARBINARY support for rbm32/rbm64 aggregation functions to improve user guidance and avoid misinterpretation. These changes collectively accelerate delivery, improve API reliability, and provide clearer data-type guidance for users and integrators.
June 2025
May 2025
7 Commits • 3 Features
May 1, 2025May 2025 monthly focus: deliver high-impact features for data access, strengthen reliability, and streamline developer experience across the PaMent/Paimon ecosystem. The team executed targeted functionality in read-optimized data paths, time-based querying, and a unified function ecosystem, while addressing key reliability bugs and clarifying edge-case API behavior.
May 2025
7 Commits • 3 Features
May 1, 2025May 2025 monthly focus: deliver high-impact features for data access, strengthen reliability, and streamline developer experience across the PaMent/Paimon ecosystem. The team executed targeted functionality in read-optimized data paths, time-based querying, and a unified function ecosystem, while addressing key reliability bugs and clarifying edge-case API behavior.
April 2025
3 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for apache/paimon: Delivered user-focused REST API documentation polish, improved token refresh reliability with enhanced observability, and fixed a NullPointerException in RESTCatalog.merge. These changes improve developer onboarding, authentication reliability, and data merge safety with added tests and instrumentation.
3 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for apache/paimon: Delivered user-focused REST API documentation polish, improved token refresh reliability with enhanced observability, and fixed a NullPointerException in RESTCatalog.merge. These changes improve developer onboarding, authentication reliability, and data merge safety with added tests and instrumentation.
April 2025
March 2025
15 Commits • 7 Features
Mar 1, 2025March 2025: Strengthened REST Catalog reliability and authentication integration for Apache Paimon, while expanding data management capabilities and improving operational performance. Delivered core REST API modernization, security enhancements, and token-based access features, plus improved housekeeping and documentation stability. The work enhances data governance, security posture, and developer experience with clear auditability and scalable workflows.
March 2025
15 Commits • 7 Features
Mar 1, 2025March 2025: Strengthened REST Catalog reliability and authentication integration for Apache Paimon, while expanding data management capabilities and improving operational performance. Delivered core REST API modernization, security enhancements, and token-based access features, plus improved housekeeping and documentation stability. The work enhances data governance, security posture, and developer experience with clear auditability and scalable workflows.
February 2025
8 Commits • 2 Features
Feb 1, 2025February 2025 Highlights for apache/paimon: Implemented DLF-based authentication for REST Catalog with warehouse-scoped configuration retrieval; enhanced RESTCatalog with region parsing, testing utilities, and server refactor; introduced in-memory catalog support for tests; fixed a major bug in the bitmap index Boolean type handling with new write/read visitors and tests for true, false, and null; updated documentation including sys.clone syntax and REST catalog usage.
8 Commits • 2 Features
Feb 1, 2025February 2025 Highlights for apache/paimon: Implemented DLF-based authentication for REST Catalog with warehouse-scoped configuration retrieval; enhanced RESTCatalog with region parsing, testing utilities, and server refactor; introduced in-memory catalog support for tests; fixed a major bug in the bitmap index Boolean type handling with new write/read visitors and tests for true, false, and null; updated documentation including sys.clone syntax and REST catalog usage.
February 2025
January 2025
7 Commits • 4 Features
Jan 1, 2025January 2025: Delivered core REST Catalog enhancements and reliability improvements in apache/paimon, enabling safer partition and view management, stronger REST resilience, and enhanced incremental reads. Implemented new APIs, improved change-log handling, and added integration tests around expiration/deletion vectors and retry logic to reduce operational risk.
January 2025
7 Commits • 4 Features
Jan 1, 2025January 2025: Delivered core REST Catalog enhancements and reliability improvements in apache/paimon, enabling safer partition and view management, stronger REST resilience, and enhanced incremental reads. Implemented new APIs, improved change-log handling, and added integration tests around expiration/deletion vectors and retry logic to reduce operational risk.
December 2024
7 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for apache/paimon: Implemented key REST Catalog capabilities (authentication, database/table/partition management) and strengthened security and error handling. Delivered end-to-end REST APIs and catalog utilities that enable automated governance and scalable operations.
7 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for apache/paimon: Implemented key REST Catalog capabilities (authentication, database/table/partition management) and strengthened security and error handling. Delivered end-to-end REST APIs and catalog utilities that enable automated governance and scalable operations.
December 2024
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Quality Metrics
Correctness90.8%
Maintainability87.0%
Architecture87.0%
Performance81.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
HTMLJavaMarkdownOpenAPIPythonSQLScalaYAMLhtml
Technical Skills
API Client DevelopmentAPI DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI TestingApache FlinkApache PaimonAuthenticationBackend DevelopmentBase64 EncodingBinary Data HandlingBug FixingCSV ParsingCaching
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline