deephaven/deephaven-core
Nov 2024 – Feb 2025
3 Months active
Languages Used
JavaPythonTOML
Technical Skills
API DesignAWSAWS S3Backend DevelopmentCloud ServicesCode Cleanup
Shivam Malhotra
PROFILE
Shivam Malhotra
Shivam Malhotra contributed to deephaven-core by engineering robust data lake integrations and modernizing backend APIs over a three-month period. He enhanced Iceberg and Parquet support, introducing reliable read and write capabilities, lazy initialization for Parquet table loading, and explicit type safety checks to improve performance and reliability. His work addressed real-world data diversity by refining partitioning logic and strengthening error handling, while also upgrading dependencies for compatibility. Using Java and Python, Shivam focused on backend development, data engineering, and cloud services, delivering well-tested solutions that reduced CI flakiness and improved S3 credential management, reflecting thoughtful, in-depth engineering practices.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
13Total
Bugs
3
Commits
13
Features
6
Lines of code
5,842
Activity Months3
Your Network
20 peopleWork History
February 2025
3 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary focused on performance, safety, and compatibility improvements in deephaven-core. Implemented Parquet Lazy Initialization to defer metadata reads during table creation, upgraded Parquet-hadoop to 1.15.0 with corresponding test updates, and strengthened Iceberg write safety with explicit column type compatibility checks and improved error handling, supported by new tests.
3 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary focused on performance, safety, and compatibility improvements in deephaven-core. Implemented Parquet Lazy Initialization to defer metadata reads during table creation, upgraded Parquet-hadoop to 1.15.0 with corresponding test updates, and strengthened Iceberg write safety with explicit column type compatibility checks and improved error handling, supported by new tests.
February 2025
December 2024
1 Commits
Dec 1, 2024December 2024: Iceberg integration hardened in deephaven-core. Implemented robustness fix to skip non-identity partitioning fields instead of failing, reducing read-time errors on diverse datasets. Added Pyiceberg2Test-based tests to validate catalog, table definitions, and data integrity with pyiceberg data. This work improves stability, reliability, and cross-compatibility with PyIceberg, delivering tangible business value through more robust data pipelines.
December 2024
1 Commits
Dec 1, 2024December 2024: Iceberg integration hardened in deephaven-core. Implemented robustness fix to skip non-identity partitioning fields instead of failing, reducing read-time errors on diverse datasets. Added Pyiceberg2Test-based tests to validate catalog, table definitions, and data integrity with pyiceberg data. This work improves stability, reliability, and cross-compatibility with PyIceberg, delivering tangible business value through more robust data pipelines.
November 2024
9 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for deephaven-core focusing on data lake integrations, API modernization, and reliability hardening. Delivered tangible data connectivity improvements across Iceberg and Parquet, modernized the Snapshot API, and reduced CI flakiness and credential-related risks.
9 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for deephaven-core focusing on data lake integrations, API modernization, and reliability hardening. Delivered tangible data connectivity improvements across Iceberg and Parquet, modernized the Snapshot API, and reduced CI flakiness and credential-related risks.
November 2024
Activity
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Quality Metrics
Correctness88.4%
Maintainability87.0%
Architecture86.0%
Performance77.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaPythonTOML
Technical Skills
API DesignAWSAWS S3Backend DevelopmentCloud ServicesCode CleanupData EngineeringDependency ManagementFile HandlingFile I/OIcebergJavaJava DevelopmentLazy InitializationParquet
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