citusdata/citus
Apr 2025 – Sep 2025
3 Months active
Languages Used
C
Technical Skills
Bug FixingC ProgrammingDebuggingMemory ManagementPostgreSQL InternalsDatabase Internals
manaldush
PROFILE
Manaldush
Worked on the citusdata/citus repository, focusing on backend stability and memory safety in distributed PostgreSQL systems using C. Addressed stack-use-after-scope vulnerabilities in background job processing and the distributed planner, improving security and preventing crashes. Enhanced schema evolution reliability by fixing memory corruption risks during downgrade and upgrade cycles, introducing dynamic attribute counting and robust handling of dropped columns. Improved correctness in multi-tenant workloads by implementing an overflow guard for bit-shift operations in tenant score calculations. Demonstrated expertise in debugging, database internals, and memory management, consistently delivering targeted bug fixes that strengthened production resilience without altering public APIs.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
4Total
Bugs
3
Commits
4
Features
0
Lines of code
241
Activity Months3
Your Network
28 peopleSame Organization
@postgrespro.ru3
Shared Repositories
25
Adam WolkMember
Bahadir Furkan AkgulMember
Alper KocatasMember
Bernd ReißMember
Cédric VillemainMember
ColmMember
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Emel ŞimşekMember
Gürkan İndibayMember
Work History
September 2025
1 Commits
Sep 1, 2025September 2025 (citusdata/citus): Implemented an overflow guard for bit-shift operations in Tenant Score calculation to prevent undefined behavior, validating the shift size against the score field width and resetting the score to zero if overflow would occur. This improves correctness and robustness of tenant score computation under multi-tenant workloads without API changes.
1 Commits
Sep 1, 2025September 2025 (citusdata/citus): Implemented an overflow guard for bit-shift operations in Tenant Score calculation to prevent undefined behavior, validating the shift size against the score field width and resetting the score to zero if overflow would occur. This improves correctness and robustness of tenant score computation under multi-tenant workloads without API changes.
September 2025
August 2025
1 Commits
Aug 1, 2025August 2025: Focused on stability of Citus schema evolution. Fixed a memory corruption risk when downgrades are followed by upgrades, by introducing dynamic attribute counting for pg_dist_partition and proper handling of dropped columns during schema changes. The fix prevents crashes, improving upgrade/downgrade reliability and overall system resilience in production.
August 2025
1 Commits
Aug 1, 2025August 2025: Focused on stability of Citus schema evolution. Fixed a memory corruption risk when downgrades are followed by upgrades, by introducing dynamic attribute counting for pg_dist_partition and proper handling of dropped columns during schema changes. The fix prevents crashes, improving upgrade/downgrade reliability and overall system resilience in production.
April 2025
2 Commits
Apr 1, 2025April 2025 Monthly Summary for citusdata/citus: Focused on security hardening and stability improvements in background job processing and distributed planner. Addressed stack-use-after-scope vulnerabilities to prevent crashes and potential exploits, reducing risk in production workloads and strengthening memory safety in core execution paths.
2 Commits
Apr 1, 2025April 2025 Monthly Summary for citusdata/citus: Focused on security hardening and stability improvements in background job processing and distributed planner. Addressed stack-use-after-scope vulnerabilities to prevent crashes and potential exploits, reducing risk in production workloads and strengthening memory safety in core execution paths.
April 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability95.0%
Architecture95.0%
Performance95.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
Backend DevelopmentBug FixingC ProgrammingDatabase InternalsDatabase SystemsDebuggingDistributed SystemsMemory ManagementPostgreSQLPostgreSQL Internals
Repositories Contributed To
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