Learn Everything

Paths/Data Engineer/Change Data Capture / Schema Evolution

Challengeadvancedubuntu:24.04Ask AI

Make the Sink Idempotent

At-least-once delivery means the same change can arrive twice. Write the strategy that makes the second copy a no-op.

Validator

⏱ 0:00

IDLE — checks run live as you type commands; submit when done

01Requirements

live checks
  • File ~/cdc/dedupe.md exists○
  • The document states the deduplication key○
  • The document states how the sink applies a change○

02Walkthrough

1 of 4 revealed
  1. 01

    Create the cdc directory

    The dedupe notes live with the capture configuration.

    mkdir -p ~/cdc
  2. 3 locked · each failed submit reveals one

03Stuck?

0 of 3 revealed

Take a hint without losing the lab — each one points at the thing to look at, not at the answer.

04AI Tutor

guides, never solves

Tell me what you're stuck on — I'll nudge, not solve. Which requirement are you looking at?

04Notebook

saved locally in this browser

learner@lab — ubuntu:24.04

↑/↓ recalls commands · Ctrl+Enter submits · type help for the command list

← Previous lab

Handle a Column Change

Change Data Capture

Next lab →

Lay Out the Project

Data Transformations