sleek_dolphin_5346
Exemplar
Top 2.2%
Member Nº 4517
Joined Aug 2026
SQL
String Length
Python
Recursion
Two-Pointer
Binary Search
Spark
Distributed Primitives
Data Skew
Spark Execution Model
Data Modeling
Metric Additivity
Pipeline Architecture
Idempotency
Table Formats
Solved
Python47
Spark0
Pipeline Architecture0
Milestones
Top 2% Python
10 solved
7-day streak
First interview
727 runs in the past 26 weeksActive days: 22 · Max streak: 22
MarAprMayJunJulAugSep
Recent solves
Counted Twice
Pipeline Architecture · medium · lesson
Top N Keys
Python · medium
Bill the idle cores behind the straggler
Spark · easy · lesson
The wall clock is the max, not the average
Spark · easy · lesson
Count the rows behind each shuffle key
Spark · easy · lesson
Pick the broadcast side: fleet or assignments
Spark · easy · lesson
Broadcast the bounded side of a sessions join
Spark · easy · lesson
Broadcast both dimensions into the fact-table join
Spark · easy · lesson
Collapse the deploy history to one row per key before joining
Spark · easy · lesson
Set the type and the strategy on one join
Spark · easy · lesson