Hadoop - Performance Tuning
Which of the following is the correct syntax to set the reduce container memory to 8192 MB in the configuration file?
Which of the following is the correct syntax to set the reduce container memory to 8192 MB in the configuration file?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall correct property name for reduce container memory
The property ismapreduce.reduce.memory.mband expects an integer value in MB.Step 2: Check syntax format
The correct syntax ismapreduce.reduce.memory.mb=8192without units or extra words.Final Answer:
mapreduce.reduce.memory.mb=8192 -> Option BQuick Check:
Reduce memory property uses memory.mb with integer value [OK]
Quick Trick: Use memory.mb property with integer value only [OK]
Common Mistakes:
- Adding units like MB in value
- Using wrong property names
- Confusing java.opts with memory.mb
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