Solution:Step 1: Understand the command flags"-rm -r" removes directories recursively in HDFS.Step 2: Apply to /backup/old_dataThe command deletes the directory and all files inside it.Final Answer:Deletes the old_data directory and its contents -> Option BQuick Check:"-rm -r" means recursive delete

[Solved] Given the command hdfs dfs -rm -r /backup/old_data, what is the expected result? — Ans: Deletes the old_data directory and its contents | Hadoop

Hadoop - Cluster Administration

Given the command
hdfs dfs -rm -r /backup/old_data, what is the expected result?

ARenames old_data directory

BDeletes the old_data directory and its contents

CCopies old_data to local backup

DDisplays contents of old_data

Step-by-Step Solution

Solution:

Step 1: Understand the command flags
"-rm -r" removes directories recursively in HDFS.
Step 2: Apply to /backup/old_data
The command deletes the directory and all files inside it.
Final Answer:
Deletes the old_data directory and its contents -> Option B
Quick Check:
"-rm -r" means recursive delete [OK]

Quick Trick: "-rm -r" deletes directories and contents recursively [OK]

Common Mistakes:

Thinking it copies files
Assuming rename operation
Expecting directory listing

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Given the command

Step 1: Understand the command flags

Step 2: Apply to /backup/old_data

Final Answer:

Quick Check:

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