Databricks Interview Questions (11+ Questions)

Learn how to diagnose and resolve disk space exhaustion issues on mounted volumes using Linux Bash commands. This guide covers checking filesystem usage, identifying largest files, freeing storage space, and verifying recovery, essential for troubleshooting storage capacity problems, preventing service failures, and maintaining application availability.

Configure Linux network namespaces and bridges for isolated container networking. Learn to create separate network segments with veth pairs, interconnect namespaces using Linux bridges, enable inter-namespace communication, and verify connectivity. This guide covers network namespace isolation, virtual ethernet configuration, bridge setup, IP forwarding, and routing between isolated network stacks. Essential for container networking troubleshooting, microservices development, understanding Docker/Kubernetes networking, and implementing custom network topologies in production environments.

def two_sum(numbers: list[int], target: int) -> list[int]:
l, r = 0, len(numbers) - 1

while l < r:
    cur_sum = numbers[l] + numbers[r]

    if cur_sum > target:
        r -= 1
    elif cur_sum < target:
        l += 1
    else:
        return [l + 1, r + 1]
        
return []

Implement a secure, automated credential-rotation flow using Secrets Manager, KMS, Lambda, SSM, SNS, and CloudWatch Logs with least-privilege IAM.

Load a sales CSV file with pandas, calculate dataset dimensions and cell count, classify data size using thresholds, and compute total revenue from quantity and price columns.

Join a large orders table with a small customers table using a broadcast join and verify it from the execution plan.

SELECT
o.order_id,
o.customer_id,
SPLIT_PART(c.full_name, ' ', 1) AS first_name,
SPLIT_PART(c.full_name, ' ', 2) AS last_name,
c.location,
o.product_id,
SPLIT_PART(p.product_info, ',', 1) AS product_type,
SPLIT_PART(p.product_info, ',', 2) AS product_color,
o.quantity
FROM {{ ref("orders") }} AS o
INNER JOIN {{ ref("customers") }} AS c
ON o.customer_id = c.customer_id
INNER JOIN {{ ref("products") }} AS p
ON o.product_id = p.product_id

Master data filtering and aggregation in PySpark. Learn how to filter rows by comparing two columns against each other, rename columns during a GroupBy operation, and count interaction occurrences.

Objective

To answer the interview question regarding SQL, you need to write an SQL query that calculates the average number of days taken to deliver orders after they have been shipped. Only orders with both a shipping date and a delivery date recorded should be included in the calculation.

###...

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Detailed Explanation for SQL Interview Question on Unpurchased Product Categories

Objective

Write an SQL query to determine which product categories have not been purchased by each customer. The query should return a list of customers along with the categories they have not purchased, sor...

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Amazon operates the world's largest e-commerce marketplace with over 300 million active customers and 12 million products. QA testing of Amazon marketplace APIs requires comprehensive validation of product search, cart management, order processing, and inventory tracking to ensure reliable shopping ...

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