percona/percona-server
Oct 2024 – Oct 2025
13 Months active
Languages Used
C++CMakePerlShellYAMLCSQLBash
Technical Skills
Build System ConfigurationCI/CDCode FormattingCode MergingCode StyleDevOps
Przemyslaw Skibinski
PROFILE
Przemyslaw Skibinski
Przemyslaw Skibinski contributed to the percona/percona-server repository by delivering a steady stream of features and stability improvements over 13 months. He focused on build system modernization, CI/CD pipeline upgrades, and database internals, using C++, SQL, and shell scripting to address both feature delivery and critical bug fixes. His work included upgrading CI environments to newer Ubuntu and macOS versions, aligning MyRocks and RocksDB configuration limits, and enhancing test infrastructure reliability. By porting fixes, refining build automation, and improving release traceability, Przemyslaw ensured Percona Server remained robust, maintainable, and compatible with evolving toolchains and deployment environments.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
32Total
Bugs
14
Commits
32
Features
14
Lines of code
2,723
Activity Months13
Your Network
152 people
Work History
October 2025
5 Commits • 2 Features
Oct 1, 2025October 2025 highlights stability improvements and release hygiene for Percona Server (8.0). CI reliability improved by upgrading OpenSSL to v3 in Azure Pipelines, RocksDB/MyRocks initialization hardened with validation tests, and release traceability enhanced through versioning docs and centralized test configurations. These changes reduce build failures, prevent startup issues, and simplify cross-build testing, delivering faster, more reliable releases to customers.
5 Commits • 2 Features
Oct 1, 2025October 2025 highlights stability improvements and release hygiene for Percona Server (8.0). CI reliability improved by upgrading OpenSSL to v3 in Azure Pipelines, RocksDB/MyRocks initialization hardened with validation tests, and release traceability enhanced through versioning docs and centralized test configurations. These changes reduce build failures, prevent startup issues, and simplify cross-build testing, delivering faster, more reliable releases to customers.
October 2025
September 2025
1 Commits
Sep 1, 2025Month 2025-09 summary for percona/percona-server focusing on MyRocks configuration alignment with RocksDB limits. Delivered a targeted bug fix that aligns accepted variable ranges with RocksDB constraints, reducing misconfiguration and improving reliability. Key project updates include adjusting rocksdb_block_size max to 4 GiB, rocksdb_keep_log_file_num min to 1, and rocksdb_max_file_opening_threads max to 262,144, validated against RocksDB limits, and captured in PS-10210. Impact includes reduced operational risk, improved stability for MyRocks deployments, and clearer configuration guidance for users. Demonstrated strengths in configuration management, cross-component coordination, and release readiness.
September 2025
1 Commits
Sep 1, 2025Month 2025-09 summary for percona/percona-server focusing on MyRocks configuration alignment with RocksDB limits. Delivered a targeted bug fix that aligns accepted variable ranges with RocksDB constraints, reducing misconfiguration and improving reliability. Key project updates include adjusting rocksdb_block_size max to 4 GiB, rocksdb_keep_log_file_num min to 1, and rocksdb_max_file_opening_threads max to 262,144, validated against RocksDB limits, and captured in PS-10210. Impact includes reduced operational risk, improved stability for MyRocks deployments, and clearer configuration guidance for users. Demonstrated strengths in configuration management, cross-component coordination, and release readiness.
August 2025
1 Commits
Aug 1, 2025August 2025 focused on hardening data handling stability in Percona Server. No new features were shipped; however, a critical bug fix was implemented to protect against overflow in unpack_unknown_varlength within RocksDB integration, strengthening security and reliability of Percona XtraDB Cluster. This work reduces risk of buffer overflows, data corruption, and crash scenarios in production deployments, improving uptime and trust in clusters handling variable-length fields. The change aligns with security/compliance expectations and was delivered with code changes, review, and testing.
1 Commits
Aug 1, 2025August 2025 focused on hardening data handling stability in Percona Server. No new features were shipped; however, a critical bug fix was implemented to protect against overflow in unpack_unknown_varlength within RocksDB integration, strengthening security and reliability of Percona XtraDB Cluster. This work reduces risk of buffer overflows, data corruption, and crash scenarios in production deployments, improving uptime and trust in clusters handling variable-length fields. The change aligns with security/compliance expectations and was delivered with code changes, review, and testing.
August 2025
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary focusing on key accomplishments for percona/percona-server. Primary focus this month was stabilizing build compatibility with GCC 15 by updating the RocksDB submodule to reference a newer commit, addressing compilation warnings and ensuring forward compatibility for upcoming releases.
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary focusing on key accomplishments for percona/percona-server. Primary focus this month was stabilizing build compatibility with GCC 15 by updating the RocksDB submodule to reference a newer commit, addressing compilation warnings and ensuring forward compatibility for upcoming releases.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 — Focused on upgrading the CI/CD infrastructure for percona-server by migrating Cirrus CI to Ubuntu 24.04 Noble. The upgrade updated the base image, and aligned build environments by adjusting instance types, compiler versions, and environment variables to leverage the new Ubuntu release. Delivered a high-impact feature that improves compatibility, stability, and access to newer Cirrus CI capabilities. Commit PS-9872 codified the switch to Ubuntu 24.04 Noble.
1 Commits • 1 Features
Jun 1, 2025June 2025 — Focused on upgrading the CI/CD infrastructure for percona-server by migrating Cirrus CI to Ubuntu 24.04 Noble. The upgrade updated the base image, and aligned build environments by adjusting instance types, compiler versions, and environment variables to leverage the new Ubuntu release. Delivered a high-impact feature that improves compatibility, stability, and access to newer Cirrus CI capabilities. Commit PS-9872 codified the switch to Ubuntu 24.04 Noble.
June 2025
May 2025
1 Commits
May 1, 2025May 2025: Stability and reliability improvements for TTL-enabled MyRocks workloads in percona/percona-server. Delivered a critical crash fix by porting fixes from external repositories to address insertions with unique_checks=OFF, improving TTL record handling and transaction error conditions. This reduces downtime and enhances data integrity for TTL-enabled tables.
May 2025
1 Commits
May 1, 2025May 2025: Stability and reliability improvements for TTL-enabled MyRocks workloads in percona/percona-server. Delivered a critical crash fix by porting fixes from external repositories to address insertions with unique_checks=OFF, improving TTL record handling and transaction error conditions. This reduces downtime and enhances data integrity for TTL-enabled tables.
April 2025
1 Commits • 1 Features
Apr 1, 2025In 2025-04, delivered a critical CI pipeline improvement for percona/percona-server by updating Azure Pipelines to a supported Ubuntu LTS and removing outdated compilers, aligning with the PS-9757 deadline. This reduces build risk, ensures reliable testing, and streamlines onboarding. No major bugs fixed this month. Overall, improved CI reliability and faster feedback for PRs; demonstrated strong CI/CD modernization and cross-team collaboration.
1 Commits • 1 Features
Apr 1, 2025In 2025-04, delivered a critical CI pipeline improvement for percona/percona-server by updating Azure Pipelines to a supported Ubuntu LTS and removing outdated compilers, aligning with the PS-9757 deadline. This reduces build risk, ensures reliable testing, and streamlines onboarding. No major bugs fixed this month. Overall, improved CI reliability and faster feedback for PRs; demonstrated strong CI/CD modernization and cross-team collaboration.
April 2025
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 — percona/percona-server: Focused on dependency compatibility and CI stability to enable reliable releases across environments. Implemented critical updates to subsystem compatibility and streamlined CI tooling to reduce build failures.
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 — percona/percona-server: Focused on dependency compatibility and CI stability to enable reliable releases across environments. Implemented critical updates to subsystem compatibility and streamlined CI tooling to reduce build failures.
February 2025
4 Commits
Feb 1, 2025February 2025 — percona/percona-server: Focused on stabilizing test infrastructure and enabling richer memory-diagnostic capabilities to accelerate debugging and release readiness. Delivered reliability improvements to the test suite, addressing flaky MTR expectations, adjusting test scope to session-level where appropriate, and tightening LeakSanitizer suppressions to reduce false positives. Also enabled AppArmor access to process memory for stacktrace diagnostics, aligning with upstream fixes for memory information retrieval in multi-threaded contexts. These changes reduce debugging time, lower false-positive failures, and improve overall product quality and security posture. Key engineering skills demonstrated include test infrastructure hardening, sanitizer configuration, and security policy integration across Linux processes.
4 Commits
Feb 1, 2025February 2025 — percona/percona-server: Focused on stabilizing test infrastructure and enabling richer memory-diagnostic capabilities to accelerate debugging and release readiness. Delivered reliability improvements to the test suite, addressing flaky MTR expectations, adjusting test scope to session-level where appropriate, and tightening LeakSanitizer suppressions to reduce false positives. Also enabled AppArmor access to process memory for stacktrace diagnostics, aligning with upstream fixes for memory information retrieval in multi-threaded contexts. These changes reduce debugging time, lower false-positive failures, and improve overall product quality and security posture. Key engineering skills demonstrated include test infrastructure hardening, sanitizer configuration, and security policy integration across Linux processes.
February 2025
January 2025
8 Commits • 3 Features
Jan 1, 2025January 2025 focused on expanding scalability for high-thread-count deployments, stabilizing critical DDL/metadata paths, and improving runtime observability and release readiness for Percona Server 8.0.41-32. The month delivered concrete scalability gains, key stability fixes, and enhanced monitoring, underpinned by a disciplined release packaging process.
January 2025
8 Commits • 3 Features
Jan 1, 2025January 2025 focused on expanding scalability for high-thread-count deployments, stabilizing critical DDL/metadata paths, and improving runtime observability and release readiness for Percona Server 8.0.41-32. The month delivered concrete scalability gains, key stability fixes, and enhanced monitoring, underpinned by a disciplined release packaging process.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for percona/percona-server focusing on feature delivery and build-system enhancements. Delivered a new build-time option to enable Percona Server Pro features, enabling modular feature delivery and easier deployment of Pro capabilities within the core server.
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for percona/percona-server focusing on feature delivery and build-system enhancements. Delivered a new build-time option to enable Percona Server Pro features, enabling modular feature delivery and easier deployment of Pro capabilities within the core server.
December 2024
November 2024
2 Commits • 2 Features
Nov 1, 2024November 2024 (percona/percona-server): Focused on code safety modernization and CI coverage to improve reliability and future readiness. Replaced the custom MY_NODISCARD macro with the standard [[nodiscard]] attribute to align with modern C++ standards and reduce macro complexity, and extended Azure Pipelines to test/build with clang-19 to improve cross-compiler compatibility and early issue detection.
November 2024
2 Commits • 2 Features
Nov 1, 2024November 2024 (percona/percona-server): Focused on code safety modernization and CI coverage to improve reliability and future readiness. Replaced the custom MY_NODISCARD macro with the standard [[nodiscard]] attribute to align with modern C++ standards and reduce macro complexity, and extended Azure Pipelines to test/build with clang-19 to improve cross-compiler compatibility and early issue detection.
October 2024
3 Commits • 3 Features
Oct 1, 2024In October 2024, delivered key maintainability and CI/CD improvements for Percona Server (PS 8.0.40), focusing on readability, build reliability, and current CI infrastructure. Notable contributions include a cosmetic code style cleanup in sql/binlog.cc, a comprehensive build-system and code refresh to enable PS 8.0.40 readiness, and a CI/CD overhaul with macOS-14 adoption and ICU bundling to ensure stable, modern test environments. These changes reduce technical debt, accelerate release readiness, and improve developer productivity by eliminating flaky builds and keeping dependencies up to date.
3 Commits • 3 Features
Oct 1, 2024In October 2024, delivered key maintainability and CI/CD improvements for Percona Server (PS 8.0.40), focusing on readability, build reliability, and current CI infrastructure. Notable contributions include a cosmetic code style cleanup in sql/binlog.cc, a comprehensive build-system and code refresh to enable PS 8.0.40 readiness, and a CI/CD overhaul with macOS-14 adoption and ICU bundling to ensure stable, modern test environments. These changes reduce technical debt, accelerate release readiness, and improve developer productivity by eliminating flaky builds and keeping dependencies up to date.
October 2024
Activity
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Quality Metrics
Correctness91.6%
Maintainability92.6%
Architecture89.4%
Performance83.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
BashCC++CMakeMarkdownPerlSQLShellYAML
Technical Skills
Bug FixingBuild AutomationBuild System ConfigurationBuild SystemsC++C++ DevelopmentCI/CDCode FormattingCode MergingCode PortingCode RefactoringCode StyleCompiler DirectivesConfiguration ManagementDatabase
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