ydb-platform/ydb
Jun 2025 – Mar 2026
5 Months active
Languages Used
C++PythonDockerfileShellYAML
Technical Skills
Backend DevelopmentBilling SystemsCloud ComputingData ProcessingDistributed SystemsQuery Optimization
Slusarenko Igor
PROFILE
Slusarenko Igor
Over five months, contributed to the ydb-platform/ydb repository by building and refining backend systems focused on billing, query processing, and workload management. Delivered a billing enhancement that excluded specific sources from traffic-based charges, improving cost accuracy. Refactored the query processing pipeline to optimize data splits after physical optimizations, increasing reliability. Developed Docker-based CI/CD environments and stabilized tests by addressing race conditions, memory leaks, and disk space issues. Enhanced observability through session state tracking and debug logging. Leveraged C++, Python, and Docker, applying skills in backend development, database management, and system programming to improve reliability, maintainability, and operational transparency.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
15Total
Bugs
5
Commits
15
Features
5
Lines of code
5,013
Activity Months5
Your Network
580 peopleShared Repositories
479
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Work History
March 2026
3 Commits • 1 Features
Mar 1, 2026March 2026: Focused on enhancing observability and reliability for the Workload Manager and metadata handling in ydb-platform/ydb. Delivered new session state tracking for workload manager, plus stability fixes to tenant recreation flows and metadata path handling to prevent lookup failures and improve query execution reliability.
3 Commits • 1 Features
Mar 1, 2026March 2026: Focused on enhancing observability and reliability for the Workload Manager and metadata handling in ydb-platform/ydb. Delivered new session state tracking for workload manager, plus stability fixes to tenant recreation flows and metadata path handling to prevent lookup failures and improve query execution reliability.
March 2026
February 2026
6 Commits • 1 Features
Feb 1, 2026February 2026 (ydb-platform/ydb) focused on reliability, isolation, and observability for federated workload pipelines. Delivered key fixes to stabilize Federated Query/workload tests by addressing race conditions and deadlocks and ensuring proper FederatedQuerySetupDriver operation; hardened metadata service testing by disabling external metadata usage and addressing async retries and memory leaks; and added SQL text tracking with enhanced debug logging for the workload service to improve observability. These changes reduce flaky tests, improve debugging speed, and strengthen production readiness of federated queries and workload handling. Demonstrated skills include C-ares synchronization, test isolation patterns, memory management, and observability instrumentation.
February 2026
6 Commits • 1 Features
Feb 1, 2026February 2026 (ydb-platform/ydb) focused on reliability, isolation, and observability for federated workload pipelines. Delivered key fixes to stabilize Federated Query/workload tests by addressing race conditions and deadlocks and ensuring proper FederatedQuerySetupDriver operation; hardened metadata service testing by disabling external metadata usage and addressing async retries and memory leaks; and added SQL text tracking with enhanced debug logging for the workload service to improve observability. These changes reduce flaky tests, improve debugging speed, and strengthen production readiness of federated queries and workload handling. Demonstrated skills include C-ares synchronization, test isolation patterns, memory management, and observability instrumentation.
December 2025
4 Commits • 1 Features
Dec 1, 20252025-12 monthly summary for ydb-platform/ydb. Key features and bugs delivered this month focused on improving CI reliability, test stability, and operational resilience.
4 Commits • 1 Features
Dec 1, 20252025-12 monthly summary for ydb-platform/ydb. Key features and bugs delivered this month focused on improving CI reliability, test stability, and operational resilience.
December 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025Month 2025-10: Focused on improving query processing correctness and maintainability through a targeted refactor in the ydb-platform/ydb repository. Moved the list-split operation to occur after physical optimization, ensuring predicate pushdown and other physical optimizations are applied before data splits. Updated tests to reflect the new operation order. This work enhances query planning reliability and sets the stage for future performance improvements, with clear traceability to PR #22085 and commit b050143e845cbde7257bfc320c805fa8772b758f.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month 2025-10: Focused on improving query processing correctness and maintainability through a targeted refactor in the ydb-platform/ydb repository. Moved the list-split operation to occur after physical optimization, ensuring predicate pushdown and other physical optimizations are applied before data splits. Updated tests to reflect the new operation order. This work enhances query planning reliability and sets the stage for future performance improvements, with clear traceability to PR #22085 and commit b050143e845cbde7257bfc320c805fa8772b758f.
June 2025
1 Commits • 1 Features
Jun 1, 2025Month 2025-06: Delivered a billing capability enhancement in ydb-platform/ydb to exclude non-billable sources (Iceberg connector and logging sources) from traffic-based billing. This improves cost accuracy, fairness, and customer chargeback visibility. The change introduces an ExcludeFromBilling mechanism in the billing subsystem and is implemented in commit 987e6f4b279799053daaa2af4286057cf2c039b4, aligned with PR #19753. This work lays the groundwork for additional exclusions and scalable billing controls in future sprints.
1 Commits • 1 Features
Jun 1, 2025Month 2025-06: Delivered a billing capability enhancement in ydb-platform/ydb to exclude non-billable sources (Iceberg connector and logging sources) from traffic-based billing. This improves cost accuracy, fairness, and customer chargeback visibility. The change introduces an ExcludeFromBilling mechanism in the billing subsystem and is implemented in commit 987e6f4b279799053daaa2af4286057cf2c039b4, aligned with PR #19753. This work lays the groundwork for additional exclusions and scalable billing controls in future sprints.
June 2025
Activity
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Quality Metrics
Correctness90.0%
Maintainability85.4%
Architecture86.0%
Performance85.4%
AI Usage24.0%
Skills & Technologies
Programming Languages
C++DockerfilePythonShellYAML
Technical Skills
Backend DevelopmentBilling SystemsC++C++ developmentCI/CDCloud ComputingContainerizationData ProcessingDatabase ManagementDevOpsDistributed SystemsDockerPythonQuery OptimizationTesting
Repositories Contributed To
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