apache/doris
Dec 2024 – Dec 2025
13 Months active
Languages Used
GroovyJavaSQLC++ShellCMakeYAMLNone
Technical Skills
Authentication and AuthorizationBackend DevelopmentCase Sensitivity HandlingCatalog ManagementCode RefactoringDatabase
zy-kkk
PROFILE
Zy-kkk
Zhongyk worked extensively on the apache/doris repository, delivering robust backend features and reliability improvements across catalog management, JDBC integration, and cloud storage support. Over 13 months, Zhongyk enhanced multi-database catalog synchronization, optimized Hive and S3 data paths, and strengthened test automation for cross-platform builds. Using Java, C++, and SQL, Zhongyk addressed resource management, authentication, and performance bottlenecks by refactoring classloaders, implementing credential factories, and improving error handling. The work included expanding test coverage, resolving concurrency issues, and introducing architectural changes for extensibility. Zhongyk’s contributions resulted in more stable deployments, faster data access, and improved maintainability for Doris users and developers.
Overall Statistics
Feature vs Bugs
43%Features
Repository Contributions
90Total
Bugs
38
Commits
90
Features
29
Lines of code
18,108
Activity Months13
Your Network
110 peopleWork History
December 2025
10 Commits • 3 Features
Dec 1, 2025December 2025 monthly summary for the apache/doris repo. Focused on delivering high-impact Hive performance improvements, broadened S3 backend capabilities, and reliability/observability enhancements, while ensuring cross-platform stability and parsing robustness. The work combined architectural changes, performance optimizations, and improved operational transparency to drive business value and developer efficiency.
10 Commits • 3 Features
Dec 1, 2025December 2025 monthly summary for the apache/doris repo. Focused on delivering high-impact Hive performance improvements, broadened S3 backend capabilities, and reliability/observability enhancements, while ensuring cross-platform stability and parsing robustness. The work combined architectural changes, performance optimizations, and improved operational transparency to drive business value and developer efficiency.
December 2025
November 2025
15 Commits • 7 Features
Nov 1, 2025Month-end summary for 2025-11 focusing on business value and technical achievements across Glue integration, JDBC compatibility, catalog reliability, and system stability. Highlights include robustness improvements, cross-version support, and enhanced observability for data access paths.
November 2025
15 Commits • 7 Features
Nov 1, 2025Month-end summary for 2025-11 focusing on business value and technical achievements across Glue integration, JDBC compatibility, catalog reliability, and system stability. Highlights include robustness improvements, cross-version support, and enhanced observability for data access paths.
October 2025
3 Commits • 2 Features
Oct 1, 2025During Oct 2025, the Doris project delivered three high-impact changes focused on security, stability, and test fidelity in the apache/doris repository. Key outcomes include: 1) LakeSoul External Catalog Deprecation: deprecated LakeSoul external catalog support, mark LakeSoul code as @Deprecated, and switch LakeSoul dependencies to 'provided' scope to reduce maintenance burden and security risk (commit bb121e30810ea7e604d21d91f98493045f5fcea5). 2) macOS build fix for FAISS: introduce a conditional compilation block to use a different chunk_size literal on macOS, resolving the build failure and stabilizing cross-platform CI (commit e51d64d7ffd11e6c435965f1a6db9b71c7e92a64). 3) Upgrade MySQL JDBC driver in tests to 8.4.0: update driver_url in Groovy test files to ensure regression tests run against current dependency (commit 903d052924e9aeaf0b8debcdaa6fe0d64ca56b77). These changes collectively improve release reliability, security posture, and testing accuracy. Technologies demonstrated include build and dependency management, cross-platform compilation strategies, and test automation with up-to-date dependencies.
3 Commits • 2 Features
Oct 1, 2025During Oct 2025, the Doris project delivered three high-impact changes focused on security, stability, and test fidelity in the apache/doris repository. Key outcomes include: 1) LakeSoul External Catalog Deprecation: deprecated LakeSoul external catalog support, mark LakeSoul code as @Deprecated, and switch LakeSoul dependencies to 'provided' scope to reduce maintenance burden and security risk (commit bb121e30810ea7e604d21d91f98493045f5fcea5). 2) macOS build fix for FAISS: introduce a conditional compilation block to use a different chunk_size literal on macOS, resolving the build failure and stabilizing cross-platform CI (commit e51d64d7ffd11e6c435965f1a6db9b71c7e92a64). 3) Upgrade MySQL JDBC driver in tests to 8.4.0: update driver_url in Groovy test files to ensure regression tests run against current dependency (commit 903d052924e9aeaf0b8debcdaa6fe0d64ca56b77). These changes collectively improve release reliability, security posture, and testing accuracy. Technologies demonstrated include build and dependency management, cross-platform compilation strategies, and test automation with up-to-date dependencies.
October 2025
September 2025
12 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for Apache Doris development: Delivered stability, correctness, and expanded testing across Iceberg and Paimon data paths, driving reliability and business value. Key fixes addressed data-scanning edge cases, resource management, and metadata interactions while introducing a unified credential workflow and broader REST catalog validation. The work reduces runtime errors, prevents cross-catalog interference, and accelerates adoption of new data sources, with visible impact on data reliability and operational safety.
September 2025
12 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for Apache Doris development: Delivered stability, correctness, and expanded testing across Iceberg and Paimon data paths, driving reliability and business value. Key fixes addressed data-scanning edge cases, resource management, and metadata interactions while introducing a unified credential workflow and broader REST catalog validation. The work reduces runtime errors, prevents cross-catalog interference, and accelerates adoption of new data sources, with visible impact on data reliability and operational safety.
August 2025
3 Commits
Aug 1, 2025Month: 2025-08. Focused on stabilizing Doris build and test pipelines with targeted bug fixes across the Apache Doris repository. No new user-facing features were released this month; the work primarily improved build reliability, configuration consistency, and test stability in cloud environments. Key updates delivered this month (highlights): - macOS compilation fix for disabled Precompiled Headers (PCH). Added macOS-specific definitions and necessary system headers to fix compilation issues and related type conversion warnings. Commit: fdcd387afdc918fc805c6dbb9c2270cc2db2cc22. - IcebergRestProperties cleaned up: removed a duplicate warehouse property and standardized naming to match Iceberg conventions. Commit: 4455d58c76355a64ccd7cd411cef930e145438c2. - Cloud-mode test stability improvement: disabled problematic JDBC 'alter resource' test to avoid false failures in cloud environments due to known access issues. Commit: 0a6b1e6dd3808091c33badfc33953ed647de5bb5. Top 3 achievements for the month: - Fixed macOS build and reduced platform-specific warnings, enabling reliable local and CI builds. - Improved configuration consistency for Iceberg-backed properties, reducing confusion and potential misconfigurations. - Increased CI/test reliability in cloud environments by removing a flaky test that caused false failures.
3 Commits
Aug 1, 2025Month: 2025-08. Focused on stabilizing Doris build and test pipelines with targeted bug fixes across the Apache Doris repository. No new user-facing features were released this month; the work primarily improved build reliability, configuration consistency, and test stability in cloud environments. Key updates delivered this month (highlights): - macOS compilation fix for disabled Precompiled Headers (PCH). Added macOS-specific definitions and necessary system headers to fix compilation issues and related type conversion warnings. Commit: fdcd387afdc918fc805c6dbb9c2270cc2db2cc22. - IcebergRestProperties cleaned up: removed a duplicate warehouse property and standardized naming to match Iceberg conventions. Commit: 4455d58c76355a64ccd7cd411cef930e145438c2. - Cloud-mode test stability improvement: disabled problematic JDBC 'alter resource' test to avoid false failures in cloud environments due to known access issues. Commit: 0a6b1e6dd3808091c33badfc33953ed647de5bb5. Top 3 achievements for the month: - Fixed macOS build and reduced platform-specific warnings, enabling reliable local and CI builds. - Improved configuration consistency for Iceberg-backed properties, reducing confusion and potential misconfigurations. - Increased CI/test reliability in cloud environments by removing a flaky test that caused false failures.
August 2025
July 2025
5 Commits • 3 Features
Jul 1, 2025July 2025 performance review for apache/doris: Focused on resilience, security, and reliability improvements across the Doris codebase. Delivered multi-URL SQL converter with robust failover, updated audit logging for expanded IP field, added OAuth2 authentication and vended credentials for Iceberg REST catalogs, and tightened test stability with enhanced timeouts and pool configurations. Resolved a frontend merge conflict impacting the Iceberg metadata path, improving CI reliability and maintainability.
July 2025
5 Commits • 3 Features
Jul 1, 2025July 2025 performance review for apache/doris: Focused on resilience, security, and reliability improvements across the Doris codebase. Delivered multi-URL SQL converter with robust failover, updated audit logging for expanded IP field, added OAuth2 authentication and vended credentials for Iceberg REST catalogs, and tightened test stability with enhanced timeouts and pool configurations. Resolved a frontend merge conflict impacting the Iceberg metadata path, improving CI reliability and maintainability.
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for apache/doris: Delivered key features for S3 integration and catalog reliability, resolved critical macOS build issues, and strengthened testing. Business value-focused outcomes include improved cross-platform build stability, enhanced S3 ingestion capabilities (including directory-style bucket support and robust endpoint/region parsing), and better maintainability of the Catalog layer.
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for apache/doris: Delivered key features for S3 integration and catalog reliability, resolved critical macOS build issues, and strengthened testing. Business value-focused outcomes include improved cross-platform build stability, enhanced S3 ingestion capabilities (including directory-style bucket support and robust endpoint/region parsing), and better maintainability of the Catalog layer.
June 2025
May 2025
7 Commits • 5 Features
May 1, 2025May 2025 focused on strengthening JDBC integration reliability, test coverage, and overall stability of Doris connectors. Key improvements spanned query execution, driver loading, test infrastructure, and cross-database support, delivering concrete business value through safer initialization, reduced leaks, and more robust data source interactions.
May 2025
7 Commits • 5 Features
May 1, 2025May 2025 focused on strengthening JDBC integration reliability, test coverage, and overall stability of Doris connectors. Key improvements spanned query execution, driver loading, test infrastructure, and cross-database support, delivering concrete business value through safer initialization, reduced leaks, and more robust data source interactions.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for the apache/doris repository. Delivered a critical PostgreSQL JDBC connection leak fix by replacing try-with-resources with explicit resource management and robust exception handling in the JDBC client. This change prevents lingering DB resources and mitigates server-side 'too many clients already' errors, improving stability for PostgreSQL workloads. Commit reference: 1fc222d0eee6a8299ee33e5f2f681d001daca5da (fix: JDBC catalog) in #49568.
1 Commits
Apr 1, 2025April 2025 monthly summary for the apache/doris repository. Delivered a critical PostgreSQL JDBC connection leak fix by replacing try-with-resources with explicit resource management and robust exception handling in the JDBC client. This change prevents lingering DB resources and mitigates server-side 'too many clients already' errors, improving stability for PostgreSQL workloads. Commit reference: 1fc222d0eee6a8299ee33e5f2f681d001daca5da (fix: JDBC catalog) in #49568.
April 2025
March 2025
7 Commits
Mar 1, 2025Concise monthly summary for 2025-03: Stabilized JDBC catalog tests and cross-database interactions for the Apache Doris repository, improved cross-platform build reliability on macOS, and enhanced Java agent debugging workflows. Delivered fixes across JDBC catalog reliability, OceanBase catalog connection compatibility, macOS build and HDFS gating, and Mac-specific Java agent attach improvements. These changes reduce test flakiness, improve cross-database interoperability, and strengthen the build and debugging experience for developers and release automation.
March 2025
7 Commits
Mar 1, 2025Concise monthly summary for 2025-03: Stabilized JDBC catalog tests and cross-database interactions for the Apache Doris repository, improved cross-platform build reliability on macOS, and enhanced Java agent debugging workflows. Delivered fixes across JDBC catalog reliability, OceanBase catalog connection compatibility, macOS build and HDFS gating, and Mac-specific Java agent attach improvements. These changes reduce test flakiness, improve cross-database interoperability, and strengthen the build and debugging experience for developers and release automation.
February 2025
8 Commits • 1 Features
Feb 1, 2025February 2025 (apache/doris) monthly summary focusing on test reliability, external catalog robustness, and build stability. Key deliveries include: 1) JDBC and External Table Testing Enhancements: broadened test coverage for JDBC catalog interactions and external tables across multiple databases, added cross-database data transfer tests, and improved test-suite reliability (commits: 67d58f1ea6063fa27ce5600da3d38569e48142ae; e2a22060d6b2265c0b115202eef2feaf059ca443; 1f0b0dba929b7313f24c0cea3696f0f03ece81db). 2) External Catalog Robustness and Cloud Mode Access: fixed missing fields when rebuilding metadata from image; corrected external metadata replay table lookups; ensured external users in cloud mode have required cluster usage privileges (commits: 9f42075eeea966547900ff08640aa63e25ff22ab; db804194471be7455f7c278c9fda24c6f3da6a98; ae86e6895941554e8143a740d22694b37d7e1026). 3) JDBC Driver Load and MacOS Build Stability: prevented duplicate JDBC driver loading and potential OOM by refactoring loader; fixed MacOS compilation by including missing header (commits: e2ff89e84fd9516f037c1b8f655bb62be3657028; 731a07e1a0447348ef934495d2255c481d502e5b). Overall impact and accomplishments: increased test reliability for cross-database scenarios, improved cloud-mode security/privilege handling, and stabilized builds, reducing runtime errors and maintenance overhead. Technologies/skills demonstrated: test automation, JDBC/JDBC catalog testing, metadata replay handling, cloud-mode privilege management, and cross-platform (MacOS) build troubleshooting.
8 Commits • 1 Features
Feb 1, 2025February 2025 (apache/doris) monthly summary focusing on test reliability, external catalog robustness, and build stability. Key deliveries include: 1) JDBC and External Table Testing Enhancements: broadened test coverage for JDBC catalog interactions and external tables across multiple databases, added cross-database data transfer tests, and improved test-suite reliability (commits: 67d58f1ea6063fa27ce5600da3d38569e48142ae; e2a22060d6b2265c0b115202eef2feaf059ca443; 1f0b0dba929b7313f24c0cea3696f0f03ece81db). 2) External Catalog Robustness and Cloud Mode Access: fixed missing fields when rebuilding metadata from image; corrected external metadata replay table lookups; ensured external users in cloud mode have required cluster usage privileges (commits: 9f42075eeea966547900ff08640aa63e25ff22ab; db804194471be7455f7c278c9fda24c6f3da6a98; ae86e6895941554e8143a740d22694b37d7e1026). 3) JDBC Driver Load and MacOS Build Stability: prevented duplicate JDBC driver loading and potential OOM by refactoring loader; fixed MacOS compilation by including missing header (commits: e2ff89e84fd9516f037c1b8f655bb62be3657028; 731a07e1a0447348ef934495d2255c481d502e5b). Overall impact and accomplishments: increased test reliability for cross-database scenarios, improved cloud-mode security/privilege handling, and stabilized builds, reducing runtime errors and maintenance overhead. Technologies/skills demonstrated: test automation, JDBC/JDBC catalog testing, metadata replay handling, cloud-mode privilege management, and cross-platform (MacOS) build troubleshooting.
February 2025
January 2025
9 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for apache/doris. Focused on stability, reliability, and broader driver compatibility across multi-FE deployments and cloud environments. Key features delivered include external catalog stabil ity and comment persistence, and JDBC integration improvements with broader driver compatibility. Major bugs fixed include test stability improvements for MySQL catalogs, more robust startup health checks for OceanBase Docker deployments, and enhancements to logging and diagnostics. Cloud-mode test permissions were enabled to support cloud environments, improving CI coverage. Overall, these efforts reduce reinitialization risks, preserve catalog metadata across restarts, improve data retrieval profiling and compatibility with newer JDBC drivers, and strengthen test reliability and observability across deployments.
January 2025
9 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for apache/doris. Focused on stability, reliability, and broader driver compatibility across multi-FE deployments and cloud environments. Key features delivered include external catalog stabil ity and comment persistence, and JDBC integration improvements with broader driver compatibility. Major bugs fixed include test stability improvements for MySQL catalogs, more robust startup health checks for OceanBase Docker deployments, and enhancements to logging and diagnostics. Cloud-mode test permissions were enabled to support cloud environments, improving CI coverage. Overall, these efforts reduce reinitialization risks, preserve catalog metadata across restarts, improve data retrieval profiling and compatibility with newer JDBC drivers, and strengthen test reliability and observability across deployments.
December 2024
6 Commits • 2 Features
Dec 1, 2024December 2024 performance summary for apache/doris: Focused on strengthening external catalog integrity and expanding JDBC catalog validation to increase reliability and data discoverability across multi-database environments. Key features delivered include External Catalog Metadata Integrity and Synchronization Improvements and JDBC Catalog Test Coverage and Validation Enhancements. These initiatives improved case-mapping stability, remote/local name resolution, and conflict detection for case-insensitive scenarios, enhanced initialization/replay logic for catalogs/databases, and established explicit parent-database linkage with improved logging. JDBC work broadened test coverage with TVF tests across multiple DBs, added logging enhancements in the PostgreSQL client, regression test outputs for TVF results, and fixes to test expectations and lowercase metadata handling in authentication scenarios. Overall impact: reduced initialization risk, improved catalog synchronization reliability, stronger observability, and better data discovery with lower maintenance overhead. Technologies/skills demonstrated: JDBC, TVF-based validation, PostgreSQL client logging, test automation and regression testing, metadata auth handling, and robust case-insensitive mapping.
6 Commits • 2 Features
Dec 1, 2024December 2024 performance summary for apache/doris: Focused on strengthening external catalog integrity and expanding JDBC catalog validation to increase reliability and data discoverability across multi-database environments. Key features delivered include External Catalog Metadata Integrity and Synchronization Improvements and JDBC Catalog Test Coverage and Validation Enhancements. These initiatives improved case-mapping stability, remote/local name resolution, and conflict detection for case-insensitive scenarios, enhanced initialization/replay logic for catalogs/databases, and established explicit parent-database linkage with improved logging. JDBC work broadened test coverage with TVF tests across multiple DBs, added logging enhancements in the PostgreSQL client, regression test outputs for TVF results, and fixes to test expectations and lowercase metadata handling in authentication scenarios. Overall impact: reduced initialization risk, improved catalog synchronization reliability, stronger observability, and better data discovery with lower maintenance overhead. Technologies/skills demonstrated: JDBC, TVF-based validation, PostgreSQL client logging, test automation and regression testing, metadata auth handling, and robust case-insensitive mapping.
December 2024
Activity
Loading activity data...
Quality Metrics
Correctness90.8%
Maintainability85.8%
Architecture83.8%
Performance78.6%
AI Usage21.4%
Skills & Technologies
Programming Languages
C++CMakeGroovyJavaNoneSQLShellYAML
Technical Skills
ANTLRAPI IntegrationAWS S3AWS SDKAbstractionAuthenticationAuthentication and AuthorizationBackend DevelopmentBug FixBug FixingBuild SystemBuild SystemsC++C++ DevelopmentC++ development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline