ravi_876
Warden
Top 8.4%
Member Nº 5078
Joined Oct 2026
SQL
Common Table Expressions
Window Deduplication
Window Partitioning
Python
Context Managers
File Context Manager
Modules
Spark
Spark Execution Model
Transformation Chaining
Grouping
Data Modeling
Metric Additivity
Indexing
Constraints
Pipeline Architecture
Micro-Batch vs True Streaming
Kappa Architecture
Lambda Architecture
Solved
Python0
Spark0
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Milestones
Steward
Weekly silver
Top 5% SQL
Hire verdict
10 solved
7-day streak
148 runs in the past 26 weeksActive days: 16 · Max streak: 13
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Recent solves
Shuffles: Beginner, Wide Transformations Challenge 2
Spark · easy · lesson
Shuffles: Beginner, Wide Transformations Challenge 1
Spark · easy · lesson
Shuffles: Beginner, Narrow Transformations Challenge 2
Spark · easy · lesson
Shuffles: Beginner, Narrow Transformations Challenge 1
Spark · easy · lesson
Catalyst Optimizer: Beginner, DataFrames over RDDs Challenge 2
Spark · easy · lesson
Catalyst Optimizer: Beginner, DataFrames over RDDs Challenge 1
Spark · easy · lesson
7-Check Rolling Average
SQL · medium
Bronze Medal
SQL · easy
10 Lowest Uptime Services
SQL · medium
Ad Revenue by Age Bucket
SQL · medium