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Consider this snippet for migrating Hadoop data to cloud storage:

medium📝 Predict Output Q4 of 15
Hadoop - Modern Data Architecture with Hadoop
Consider this snippet for migrating Hadoop data to cloud storage: 
hadoop distcp hdfs://namenode:8020/data s3a://mybucket/data
What is the expected result?
AData copied from HDFS to Amazon S3 bucket
BData copied from Amazon S3 to HDFS
CData deleted from HDFS after copy
DCommand will fail due to syntax error
Step-by-Step Solution
Solution:

  1. Step 1: Understand 'hadoop distcp' command

    It copies data between Hadoop-compatible file systems.

  2. Step 2: Analyze source and destination paths

    Source is HDFS path, destination is S3 bucket path, so data moves from HDFS to S3.

  3. Final Answer:

    Data copied from HDFS to Amazon S3 bucket -> Option A

  4. Quick Check:

    distcp copies data from source to destination [OK]
Quick Trick: distcp copies data from source to destination paths [OK]
Common Mistakes:
  • Confusing source and destination order
  • Assuming data is deleted after copy
  • Thinking command syntax is incorrect

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