A slave node in your cluster has four 2TB hard drives installed (4 x 2TB). The DataNode is
configured to store HDFS blocks on the disks. You set the value of the
dfs.datanode.du.reserved parameter to 100GB. How does this alter HDFS block storage?
A.
All hard drives may be used to store HDFS blocks as long as atleast 100 GB in total is
available on the node
B.
100 GB on each hard drive may not be used to store HDFS blocks
C.
25 GB on each hard drive may not be used to store HDFS blocks
D.
A maximum of 100 GB on each hard drive may be used to store HDFS blocks
Explanation:
B. on each drive 100GB is reserver
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B is right. 100 GB is used for Non-DFS data storage.
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