apache/druid
Oct 2024 – Feb 2026
8 Months active
Languages Used
JavaMarkdownJavaScriptYAMLXML
Technical Skills
API DevelopmentBackend DevelopmentDocumentationLoggingTestingAWS
Ashwin Tumma
PROFILE
Ashwin Tumma
Ashwin Tumma contributed to the apache/druid repository by developing backend features and strengthening system reliability through targeted engineering. He enhanced API stability and documentation, improved SQL metrics observability, and expanded test coverage for metrics emission and AWS credential configuration using Java and JUnit. Ashwin addressed security and compliance by upgrading dependencies such as Gson, Bouncy Castle, and log4j-core, mitigating known vulnerabilities without disrupting functionality. His work included Prometheus integration, configuration management, and rigorous unit testing, ensuring robust monitoring and reduced risk of regressions. Throughout, Ashwin demonstrated depth in Java, dependency management, and backend development, delivering maintainable, production-ready improvements.
Overall Statistics
Feature vs Bugs
46%Features
Repository Contributions
15Total
Bugs
7
Commits
15
Features
6
Lines of code
434
Activity Months8
Your Network
61 peopleWork History
February 2026
1 Commits
Feb 1, 2026February 2026 (2026-02) – Apache Druid: Security patch delivered to address CVE-2026-24400 by upgrading assertj-core, reinforcing CI/test framework security and project integrity. Focused on risk reduction and stability across the repository.
1 Commits
Feb 1, 2026February 2026 (2026-02) – Apache Druid: Security patch delivered to address CVE-2026-24400 by upgrading assertj-core, reinforcing CI/test framework security and project integrity. Focused on risk reduction and stability across the repository.
February 2026
January 2026
1 Commits
Jan 1, 2026Month: 2026-01 Key features delivered: - Security patch implemented in the apache/druid repository: Upgraded the Bouncy Castle library (org.bouncycastle:bcpkix-jdk18on) from 1.79 to 1.81 to resolve SONATYPE-2025-001911. Commit: 0e1afd7aeb2c57167a1146c894b2cade3ab7cf99. Major bugs fixed: - Resolved a security vulnerability related to the Bouncy Castle dependency; upgrade completed with no reported regressions. Overall impact and accomplishments: - Strengthened security posture for a mission-critical data processing stack, reducing vulnerability exposure and ensuring compliance with security advisories. Maintained system stability through a targeted dependency upgrade. Technologies/skills demonstrated: - Dependency management and secure patching, dependency upgrade governance, and traceability through commit references. Collaboration and attribution demonstrated via a co-authored commit.
January 2026
1 Commits
Jan 1, 2026Month: 2026-01 Key features delivered: - Security patch implemented in the apache/druid repository: Upgraded the Bouncy Castle library (org.bouncycastle:bcpkix-jdk18on) from 1.79 to 1.81 to resolve SONATYPE-2025-001911. Commit: 0e1afd7aeb2c57167a1146c894b2cade3ab7cf99. Major bugs fixed: - Resolved a security vulnerability related to the Bouncy Castle dependency; upgrade completed with no reported regressions. Overall impact and accomplishments: - Strengthened security posture for a mission-critical data processing stack, reducing vulnerability exposure and ensuring compliance with security advisories. Maintained system stability through a targeted dependency upgrade. Technologies/skills demonstrated: - Dependency management and secure patching, dependency upgrade governance, and traceability through commit references. Collaboration and attribution demonstrated via a co-authored commit.
December 2025
3 Commits
Dec 1, 2025December 2025 monthly summary for the apache/druid repo focused on strengthening security posture through targeted dependency upgrades to remediate known CVEs. The work reduces vulnerability surface and helps ensure continued reliability for downstream customers while maintaining alignment with security advisories.
3 Commits
Dec 1, 2025December 2025 monthly summary for the apache/druid repo focused on strengthening security posture through targeted dependency upgrades to remediate known CVEs. The work reduces vulnerability surface and helps ensure continued reliability for downstream customers while maintaining alignment with security advisories.
December 2025
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary for apache/druid focusing on security and dependency governance. Implemented a patch to remediate CVE-2025-53864 by upgrading the Gson library from 2.10.1 to 2.12.0. The change is confined to dependencies management (licenses.yaml) and does not alter code functionality. This enhances security posture, reduces vulnerability exposure, and maintains compliance through traceable dependency updates.
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary for apache/druid focusing on security and dependency governance. Implemented a patch to remediate CVE-2025-53864 by upgrading the Gson library from 2.10.1 to 2.12.0. The change is confined to dependencies management (licenses.yaml) and does not alter code functionality. This enhances security posture, reduces vulnerability exposure, and maintains compliance through traceable dependency updates.
February 2025
3 Commits • 2 Features
Feb 1, 2025February 2025 (apache/druid): Key focus on Prometheus integration, unit test coverage, and documentation quality. Delivered user-defined histogram buckets for Prometheus Timer Metrics with code and docs updates; expanded unit tests for MSQTaskList, MSQTuningConfig, and PrometheusEmitterConfig; and fixed a Kafka Emitter configuration documentation typo to prevent misconfiguration. These changes enhance observability, reliability, and developer experience, aligning with business goals of accurate metrics, robust configurations, and reduced risk across deployments.
3 Commits • 2 Features
Feb 1, 2025February 2025 (apache/druid): Key focus on Prometheus integration, unit test coverage, and documentation quality. Delivered user-defined histogram buckets for Prometheus Timer Metrics with code and docs updates; expanded unit tests for MSQTaskList, MSQTuningConfig, and PrometheusEmitterConfig; and fixed a Kafka Emitter configuration documentation typo to prevent misconfiguration. These changes enhance observability, reliability, and developer experience, aligning with business goals of accurate metrics, robust configurations, and reduced risk across deployments.
February 2025
January 2025
2 Commits • 2 Features
Jan 1, 2025Month: 2025-01 Key deliverables: - Test Coverage Enhancements for Processing Directory Metrics Emission and JavaScript Configuration: introduced HttpPostEmitterMonitorTest.java and JavaScriptConfigTest.java to improve testing of metrics emission and JavaScript configuration in the Processing Directory. Commit 50853cef2655fe277e464d7c255ac25068e76930 (Code coverage additions for Processing Directory #17622). - Test Coverage Enhancements for AWS Credentials Configuration: added AWSCredentialsConfigTest.java to validate default values and property binding for AWS access key, secret key, and file session credentials. Commit a805f4b451a77a359732416ee045240b4b616730 (Code coverage additions for Cloud #17621). Major bugs fixed: - No explicit defects reported this month. Focused on strengthening test coverage to detect regressions earlier and improve resilience of critical config paths. Impact and accomplishments: - Elevated reliability of metrics emission and AWS credentials handling in apache/druid; faster feedback through expanded test coverage; better protection against config-related regressions in production. Technologies/skills demonstrated: - Java, JUnit, test coverage engineering, code quality improvements, tracing commits for maintainability, and CI-friendly QA practices.
January 2025
2 Commits • 2 Features
Jan 1, 2025Month: 2025-01 Key deliverables: - Test Coverage Enhancements for Processing Directory Metrics Emission and JavaScript Configuration: introduced HttpPostEmitterMonitorTest.java and JavaScriptConfigTest.java to improve testing of metrics emission and JavaScript configuration in the Processing Directory. Commit 50853cef2655fe277e464d7c255ac25068e76930 (Code coverage additions for Processing Directory #17622). - Test Coverage Enhancements for AWS Credentials Configuration: added AWSCredentialsConfigTest.java to validate default values and property binding for AWS access key, secret key, and file session credentials. Commit a805f4b451a77a359732416ee045240b4b616730 (Code coverage additions for Cloud #17621). Major bugs fixed: - No explicit defects reported this month. Focused on strengthening test coverage to detect regressions earlier and improve resilience of critical config paths. Impact and accomplishments: - Elevated reliability of metrics emission and AWS credentials handling in apache/druid; faster feedback through expanded test coverage; better protection against config-related regressions in production. Technologies/skills demonstrated: - Java, JUnit, test coverage engineering, code quality improvements, tracing commits for maintainability, and CI-friendly QA practices.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for apache/druid focusing on SQL Metrics Observability and logging improvements. Delivered engine-dimension support for SQL metrics with updated documentation, and fixed a duplicate context issue in SQL execution reporter logs with unit tests updated. The work strengthens observability, improves data quality, and enables faster diagnostics for performance tuning.
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for apache/druid focusing on SQL Metrics Observability and logging improvements. Delivered engine-dimension support for SQL metrics with updated documentation, and fixed a duplicate context issue in SQL execution reporter logs with unit tests updated. The work strengthens observability, improves data quality, and enables faster diagnostics for performance tuning.
December 2024
October 2024
2 Commits • 1 Features
Oct 1, 2024Month 2024-10 — Consolidated documentation and API stability improvements for apache/druid, focusing on clarifying Kafka ingestion configuration and stabilizing Map Lookup endpoints. These changes reduce onboarding time for users configuring schema and ensure reliable JSON output for API introspection, improving developer experience and integration reliability.
October 2024
2 Commits • 1 Features
Oct 1, 2024Month 2024-10 — Consolidated documentation and API stability improvements for apache/druid, focusing on clarifying Kafka ingestion configuration and stabilizing Map Lookup endpoints. These changes reduce onboarding time for users configuring schema and ensure reliable JSON output for API introspection, improving developer experience and integration reliability.
Activity
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Quality Metrics
Correctness98.6%
Maintainability98.6%
Architecture98.6%
Performance97.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaJavaScriptMarkdownXMLYAML
Technical Skills
API DevelopmentAWSBackend DevelopmentCode CoverageConfiguration ManagementDependency ManagementDocumentationJavaJava testing frameworksJavaScriptLoggingMavenMonitoringPrometheusSecurity Patching
Repositories Contributed To
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