apache/spark
Jul 2025 – Aug 2025
2 Months active
Languages Used
Scala
Technical Skills
SQLSparkbackend developmentScaladatabase management
vanja-vujovic-db
PROFILE
Vanja-vujovic-db
Over a two-month period, contributed to the apache/spark repository by developing features focused on SQL performance and observability. Built a performance monitoring capability for remote schema fetch in Spark SQL, introducing SQLMetric instrumentation to measure schema retrieval duration and enhance debugging and tuning for distributed workloads. In a subsequent update, optimized SQL command execution by reducing JDBC connection overhead, which is expected to lower latency and improve throughput for large-scale deployments. These changes were implemented using Scala, SQL, and Spark, with an emphasis on backend development and database management to improve operational efficiency and reliability in SQL execution paths.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
2
Lines of code
309
Activity Months2
Your Network
735 peopleSame Organization
@databricks.com334
Work History
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for apache/spark focused on performance enhancements in SQL execution and operational efficiency.
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for apache/spark focused on performance enhancements in SQL execution and operational efficiency.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for apache/spark: Delivered a performance monitoring capability for remote schema fetch in Spark SQL by introducing SQLMetric to measure the duration of remote schema retrieval. This instrumentation enhances debugging capabilities and supports performance tuning for distributed schema retrieval workloads. The change is associated with SPARK-52926 and implemented in commit 605e5203a16fac830c2a39694b3d1e99b4d57a65. Business value: faster diagnosis of schema-fetch latency, improved reliability of SQL planning, and reduced mean time to resolution for related performance issues.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for apache/spark: Delivered a performance monitoring capability for remote schema fetch in Spark SQL by introducing SQLMetric to measure the duration of remote schema retrieval. This instrumentation enhances debugging capabilities and supports performance tuning for distributed schema retrieval workloads. The change is associated with SPARK-52926 and implemented in commit 605e5203a16fac830c2a39694b3d1e99b4d57a65. Business value: faster diagnosis of schema-fetch latency, improved reliability of SQL planning, and reduced mean time to resolution for related performance issues.
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance90.0%
AI Usage30.0%
Skills & Technologies
Programming Languages
Scala
Technical Skills
SQLScalaSparkbackend developmentdatabase management
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline