apache/seatunnel
Nov 2024 – Jun 2025
6 Months active
Languages Used
JavaSQLMarkdown
Technical Skills
Database ConnectorsJDBCSQL GenerationSchema EvolutionBackend DevelopmentConnector Development
Wanming Shi
PROFILE
Wanming Shi
Over six months, this developer enhanced the apache/seatunnel project by building and refining database connectors and CDC pipelines using Java and SQL. They implemented schema evolution features for MySQL and StarRocks connectors, enabling robust column management and seamless data consistency. Their work included updating SQL generation logic, improving checkpoint recovery for MySQL CDC with GTID, and stabilizing end-to-end tests for Doris and StarRocks. Addressing reliability, they fixed MongoDB CDC’s exactly_once configuration and introduced fallback mechanisms for resume token expiration. The developer’s contributions demonstrated depth in distributed systems, error handling, and configuration management, resulting in more resilient and maintainable data pipelines.
Overall Statistics
Feature vs Bugs
43%Features
Repository Contributions
7Total
Bugs
4
Commits
7
Features
3
Lines of code
6,649
Activity Months6
Your Network
78 people
Work History
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary for the apache/seatunnel project focused on reliability improvements in MongoDB CDC. Resolved a defect where the exactly_once default incorrectly set to true, which could cause malfunctions in CDC pipelines. Implemented a configurable exactly_once option with default false, and updated user documentation to reflect the new behavior and usage. This change reduces risk of data duplication or loss in MongoDB CDC and improves deployment safety across environments.
1 Commits
Jun 1, 2025June 2025 monthly summary for the apache/seatunnel project focused on reliability improvements in MongoDB CDC. Resolved a defect where the exactly_once default incorrectly set to true, which could cause malfunctions in CDC pipelines. Implemented a configurable exactly_once option with default false, and updated user documentation to reflect the new behavior and usage. This change reduces risk of data duplication or loss in MongoDB CDC and improves deployment safety across environments.
June 2025
March 2025
1 Commits
Mar 1, 2025March 2025 monthly summary for apache/seatunnel development. Key bug fix delivered for the MongoDB CDC Connector, implementing a fallback to timestamp startup mode when the resume token expires to ensure data continuity and robustness. This change reduces downtime and improves recoverability in production data pipelines. Commit afc990d84ea3ecd4d70efc80ad5cd704672f1edb (PR #8754).
March 2025
1 Commits
Mar 1, 2025March 2025 monthly summary for apache/seatunnel development. Key bug fix delivered for the MongoDB CDC Connector, implementing a fallback to timestamp startup mode when the resume token expires to ensure data continuity and robustness. This change reduces downtime and improves recoverability in production data pipelines. Commit afc990d84ea3ecd4d70efc80ad5cd704672f1edb (PR #8754).
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for apache/seatunnel focusing on robustness and reliability of MySQL CDC startup recovery. Implemented a fix to GTID recovery logic on startup to correctly recover from checkpoints across various startup modes and GTID configurations, enhancing resilience when resuming from saved states. The change reduces risk of data loss or duplication during recovery and improves uptime in production deployments.
1 Commits
Feb 1, 2025February 2025 monthly summary for apache/seatunnel focusing on robustness and reliability of MySQL CDC startup recovery. Implemented a fix to GTID recovery logic on startup to correctly recover from checkpoints across various startup modes and GTID configurations, enhancing resilience when resuming from saved states. The change reduces risk of data loss or duplication during recovery and improves uptime in production deployments.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: StarRocks multi-table sink support delivered for the StarRocks connector, enabling simultaneous writes to multiple tables and updated E2E tests to verify cross-table data consistency (commit 55eebfa8af2f3e040be670a61ef46fa8402b891d). Doris E2E tests stabilized by addressing flakiness through robust resource cleanup and improved initialization, including adding AfterAll to close the MySQL container and wiring credentials in UniqueDatabase initialization (commit 36b3dd21c819bd1a4be50bb270e5bca325357b20). These efforts increased pipeline flexibility, reliability, and CI stability, demonstrating expertise in connector development, end-to-end testing, and containerized test environments.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: StarRocks multi-table sink support delivered for the StarRocks connector, enabling simultaneous writes to multiple tables and updated E2E tests to verify cross-table data consistency (commit 55eebfa8af2f3e040be670a61ef46fa8402b891d). Doris E2E tests stabilized by addressing flakiness through robust resource cleanup and improved initialization, including adding AfterAll to close the MySQL container and wiring credentials in UniqueDatabase initialization (commit 36b3dd21c819bd1a4be50bb270e5bca325357b20). These efforts increased pipeline flexibility, reliability, and CI stability, demonstrating expertise in connector development, end-to-end testing, and containerized test environments.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for apache/seatunnel focusing on key delivered features, major fixes, impact, and technical proficiency.
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for apache/seatunnel focusing on key delivered features, major fixes, impact, and technical proficiency.
December 2024
November 2024
1 Commits • 1 Features
Nov 1, 2024In Nov 2024, delivered a feature for the Apache Seatunnel MySQL JDBC Connector enabling schema evolution to add a new column after an existing column, improving robustness and correctness of schema evolution. Updated JdbcDialect to generate SQL with an AFTER clause and adjusted AbstractJdbcSinkWriter to preserve and manage column order when introducing new columns. This reduces risk and manual work during schema evolution in MySQL targets.
November 2024
1 Commits • 1 Features
Nov 1, 2024In Nov 2024, delivered a feature for the Apache Seatunnel MySQL JDBC Connector enabling schema evolution to add a new column after an existing column, improving robustness and correctness of schema evolution. Updated JdbcDialect to generate SQL with an AFTER clause and adjusted AbstractJdbcSinkWriter to preserve and manage column order when introducing new columns. This reduces risk and manual work during schema evolution in MySQL targets.
Activity
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Quality Metrics
Correctness91.4%
Maintainability84.2%
Architecture81.4%
Performance77.2%
AI Usage22.8%
Skills & Technologies
Programming Languages
JavaMarkdownSQL
Technical Skills
Backend DevelopmentCDCCheckpoint RecoveryConfiguration ManagementConnector DevelopmentData EngineeringDatabase ConnectorsDatabase IntegrationDistributed SystemsDocumentationEnd-to-End TestingError HandlingFull Stack DevelopmentGTIDIntegration Testing
Repositories Contributed To
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