Cloudera
CCA-500 · Question #56
You observed that the number of spilled records from Map tasks far exceeds the number of map output records. Your child heap size is 1GB and your io.sort.mb value is set to 1000MB. How would you…
The correct answer is D. Tune the io.sort.mb value until you observe that the number of spilled records equals (or is as. See the full explanation below for the reasoning.
Question
You observed that the number of spilled records from Map tasks far exceeds the number of map output records. Your child heap size is 1GB and your io.sort.mb value is set to 1000MB. How would you tune your io.sort.mb value to achieve maximum memory to disk I/O ratio?
Options
- AFor a 1GB child heap size an io.sort.mb of 128 MB will always maximize memory to disk I/O
- BIncrease the io.sort.mb to 1GB
- CDecrease the io.sort.mb value to 0
- DTune the io.sort.mb value until you observe that the number of spilled records equals (or is as
How the community answered
(30 responses)- A7% (2)
- B10% (3)
- C3% (1)
- D80% (24)
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