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CCA-500 · Question #10
CCA-500 Question #10: Real Exam Question with Answer & Explanation
The correct answer is B. Because your under-replicated blocks count matches the Live Nodes, one node is dead, and your. We know that "one node is dead" from this display but we do not know exactly the cause. This is why I do not agree with "A". Only "B" seems to have all correct statements.
Question
Cluster Summary: 45 files and directories, 12 blocks = 57 total. Heap size is 15.31 MB/193.38MB(7%) Refer to the above screenshot. You configure a Hadoop cluster with seven DataNodes and on of your monitoring UIs displays the details shown in the exhibit. What does the this tell you?
Exhibit
Options
- AThe DataNode JVM on one host is not active
- BBecause your under-replicated blocks count matches the Live Nodes, one node is dead, and your
- CYour cluster has lost all HDFS data which had bocks stored on the dead DatNode
- DThe HDFS cluster is in safe mode
Explanation
We know that "one node is dead" from this display but we do not know exactly the cause. This is why I do not agree with "A". Only "B" seems to have all correct statements.
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