percona/percona-server-mongodb
Oct 2024 – Jan 2025
4 Months active
Languages Used
YAMLPythonShellJiraQL
Technical Skills
CI/CD ConfigurationTesting InfrastructureBackend DevelopmentBuild AutomationCI/CDConfiguration Management
Mikhail Shchatko
PROFILE
Mikhail Shchatko
Mikhail Shchatko contributed to the percona/percona-server-mongodb repository by delivering backend and CI/CD improvements focused on test automation, build reliability, and workflow efficiency. He enhanced test infrastructure by optimizing Evergreen configurations, expanding cross-OS build matrices, and refining burn-in test discovery logic. Using Python, YAML, and shell scripting, Mikhail developed validation scripts, enabled stricter linting, and introduced granular build failure thresholds to improve monitoring accuracy. His work included decoupling CI tasks for parallel execution and reorganizing test groups to reduce contention, resulting in faster feedback loops and more predictable test outcomes. These changes improved maintainability and resource efficiency across the project.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
14Total
Bugs
2
Commits
14
Features
8
Lines of code
1,469
Activity Months4
Your Network
522 people
Work History
January 2025
6 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for percona/percona-server-mongodb. Delivered focused improvements in bug fix categorization and test run reporting, plus significant CI workflow optimizations to enable parallel execution and task decoupling. These changes boosted issue triage speed, accuracy of burn-in/run statistics, and CI efficiency, aligning with faster release cycles and higher reliability.
6 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for percona/percona-server-mongodb. Delivered focused improvements in bug fix categorization and test run reporting, plus significant CI workflow optimizations to enable parallel execution and task decoupling. These changes boosted issue triage speed, accuracy of burn-in/run statistics, and CI efficiency, aligning with faster release cycles and higher reliability.
January 2025
December 2024
3 Commits • 2 Features
Dec 1, 2024Performance and test automation enhancements delivered in 2024-12 for percona/percona-server-mongodb. Key outcomes: reduced CI processing, expanded cross-OS coverage, and improved burn-in test selection. Key features delivered: - Symbolization performance optimization for successful tests: Skip resmoke symbolization on test success by checking the test's return code before symbolization; reduces unnecessary processing and speeds up the workflow. Commit: 25cfd21f83f3b1f7dce63e1f36c6c8540703ce28 (SERVER-97728). - Expanded development build/test matrix across OS variants: Reintroduce buildscripts_test into development variants across multiple operating systems to broaden development testing coverage, including configurations that require large hosts and excluding incompatible variants. Commit: e7da996a65a63d46c217f49af12b9507e53fe819 (SERVER-98229). Major bugs fixed: - Burn-in test discovery accuracy improvements for variant and task flags: Refactor burn-in test discovery to correctly apply variant and task-specific resmoke flags; introduce _process_tests_by_suite to filter tests and ensure only relevant tests are discovered and executed according to build variant and task settings. Commit: 2ce576a4db24ebd5e13266015480d307b0907b49 (SERVER-97934). Overall impact and accomplishments: - Faster CI feedback loop with reduced symbolization overhead and more reliable test discovery; broader OS coverage reduces risk in development integration; improved resource efficiency and predictability of test execution. Technologies/skills demonstrated: - Resmoke optimization and test orchestration, cross-OS build/test matrix expansion, development variants management, and test-discovery refactoring.
December 2024
3 Commits • 2 Features
Dec 1, 2024Performance and test automation enhancements delivered in 2024-12 for percona/percona-server-mongodb. Key outcomes: reduced CI processing, expanded cross-OS coverage, and improved burn-in test selection. Key features delivered: - Symbolization performance optimization for successful tests: Skip resmoke symbolization on test success by checking the test's return code before symbolization; reduces unnecessary processing and speeds up the workflow. Commit: 25cfd21f83f3b1f7dce63e1f36c6c8540703ce28 (SERVER-97728). - Expanded development build/test matrix across OS variants: Reintroduce buildscripts_test into development variants across multiple operating systems to broaden development testing coverage, including configurations that require large hosts and excluding incompatible variants. Commit: e7da996a65a63d46c217f49af12b9507e53fe819 (SERVER-98229). Major bugs fixed: - Burn-in test discovery accuracy improvements for variant and task flags: Refactor burn-in test discovery to correctly apply variant and task-specific resmoke flags; introduce _process_tests_by_suite to filter tests and ensure only relevant tests are discovered and executed according to build variant and task settings. Commit: 2ce576a4db24ebd5e13266015480d307b0907b49 (SERVER-97934). Overall impact and accomplishments: - Faster CI feedback loop with reduced symbolization overhead and more reliable test discovery; broader OS coverage reduces risk in development integration; improved resource efficiency and predictability of test execution. Technologies/skills demonstrated: - Resmoke optimization and test orchestration, cross-OS build/test matrix expansion, development variants management, and test-discovery refactoring.
November 2024
4 Commits • 4 Features
Nov 1, 2024Concise monthly summary for November 2024 focusing on key features delivered, impact, and technical achievements for performance reviews.
4 Commits • 4 Features
Nov 1, 2024Concise monthly summary for November 2024 focusing on key features delivered, impact, and technical achievements for performance reviews.
November 2024
October 2024
1 Commits
Oct 1, 2024In Oct 2024, stabilized test reliability for percona/percona-server-mongodb by focusing on CI/test infrastructure improvements. Specifically extended the Evergreen feature_flag_multiversion task timeout from 15 minutes to 30 minutes to prevent intermittent failures due to outlier runtimes. This change, scoped to Evergreen configuration, reduces flaky test runs, accelerates feedback loops, and supports more consistent release confidence. No new user-facing features were delivered this month; work centered on reliability and maintainability of CI pipelines.
October 2024
1 Commits
Oct 1, 2024In Oct 2024, stabilized test reliability for percona/percona-server-mongodb by focusing on CI/test infrastructure improvements. Specifically extended the Evergreen feature_flag_multiversion task timeout from 15 minutes to 30 minutes to prevent intermittent failures due to outlier runtimes. This change, scoped to Evergreen configuration, reduces flaky test runs, accelerates feedback loops, and supports more consistent release confidence. No new user-facing features were delivered this month; work centered on reliability and maintainability of CI pipelines.
Activity
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Quality Metrics
Correctness87.2%
Maintainability89.4%
Architecture83.6%
Performance77.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
JiraQLPythonShellYAML
Technical Skills
Backend DevelopmentBuild AutomationBuild ScriptingBuild System ConfigurationBuild SystemsCI/CDCI/CD ConfigurationConfiguration ManagementDevOpsJira IntegrationLintingPythonScriptingSystem MonitoringTest Automation
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