Hadoop - Modern Data Architecture with Hadoop
You want to run a Hadoop job on AWS EMR that reads data from S3, processes it, and writes output back to S3. Which of these steps is NOT required?
You want to run a Hadoop job on AWS EMR that reads data from S3, processes it, and writes output back to S3. Which of these steps is NOT required?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand EMR cluster setup
EMR clusters come with Hadoop pre-installed; manual installation is not needed.Step 2: Review required steps for S3 integration
IAM roles must allow S3 access, and job submission must use S3 paths.Final Answer:
Manually install Hadoop on each EMR node after cluster creation -> Option AQuick Check:
EMR auto-installs Hadoop; manual install unnecessary [OK]
Quick Trick: EMR clusters have Hadoop ready; no manual install needed [OK]
Common Mistakes:
- Thinking Hadoop must be installed manually on EMR nodes
- Forgetting to set IAM roles for S3 access
- Using local paths instead of S3 paths in job submission
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