Choose three reasons why should you run the HDFS balancer periodically?
A.
To ensure that there is capacity in HDFS for additional data
B.
To ensure that all blocks in the cluster are 128MB in size
C.
To help HDFS deliver consistent performance under heavy loads
D.
To ensure that there is consistent disk utilization across the DataNodes
E.
To improve data locality MapReduce
Explanation:
NOTE: There is only one correct answer in the options for this question. Please
check the following reference:
http://www.quora.com/Apache-Hadoop/It-is-recommended-that-you-run-the-HDFS-balancerperiodically-Why-Choose-3
Answer is “C, D, and E” – Three reasons
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I guess only D should be the correct answer
https://www.quora.com/It-is-recommended-that-you-run-the-HDFS-balancer-periodically-Why-Choose-3
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D
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A,C,D
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change to C,D,E
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cde please look for apache balance doc.
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C,D,E
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I agree with the answer. D
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