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CCA-410 · Question #89
CCA-410 Question #89: Real Exam Question with Answer & Explanation
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Question
You observe that the number of spilled records from map tasks for exceeds the number of map output records. You child heap size is 1 GB and your io.sort.mb value is set to 100MB. How would you tune your io.sort.mb value to achieve maximum memory to disk I/O ratio?
Options
- ATune io.sort.mb value until you observe that the number of spilled records equals (or is as close to equals)
- BDecrease the io.sort.mb value below 100MB.
- CIncrease the IO.sort.mb as high you can, as close to 1GB as possible.
- DFor 1GB child heap size an io.sort.mb of 128MB will always maximum memory to disk I/O.
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