[Solved] In a cluster sizing script, the variable for total RAM is calculated as total_ram =... If nodes=8 and ram_per_node=16, but the script outputs 112 GB instead of 128 GB, what is the likely error? | Hadoop

Hadoop - Cluster Administration

In a cluster sizing script, the variable for total RAM is calculated as total_ram = nodes * ram_per_node. If nodes=8 and ram_per_node=16, but the script outputs 112 GB instead of 128 GB, what is the likely error?

APartial addition instead of multiplication

Bram_per_node value is wrong

Cnodes value is wrong

DIncorrect multiplication operator

Step-by-Step Solution

Solution:

Step 1: Calculate expected total RAM
8 nodes * 16 GB = 128 GB expected.
Step 2: Analyze output 112 GB
112 is less than 128, suggesting addition or partial multiplication error.
Step 3: Identify likely cause
Partial addition (e.g., 16 * 7 = 112, such as adding ram_per_node seven times instead of eight) instead of full multiplication.
Final Answer:
Partial addition instead of multiplication -> Option A
Quick Check:
Wrong operator or partial addition causes wrong total [OK]

Quick Trick: Use correct operators; multiplication not addition for totals [OK]

Common Mistakes:

Using addition instead of multiplication
Wrong variable values
Syntax errors in calculation

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More Hadoop Quizzes

If nodes=8 and ram_per_node=16, but the script outputs 112 GB instead of 128 GB, what is the likely error?

Step 1: Calculate expected total RAM

Step 2: Analyze output 112 GB

Step 3: Identify likely cause

Final Answer:

Quick Check:

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