You are running Hadoop cluster with all monitoring facilities properly configured.
Which scenario will go undeselected?
A.
HDFS is almost full
B.
The NameNode goes down
C.
A DataNode is disconnected from the cluster
D.
Map or reduce tasks that are stuck in an infinite loop
E.
MapReduce jobs are causing excessive memory swaps
D
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D is correct.
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The only thing you can’t monitor in this case is the infinite loop of map and reduce tasks.
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D is correct.
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If the NameNode goes down, the cluster immediately becomes unavailable.
B is correct.
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Correct answer is D
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Can you tell if these answers are correct ? @Manoj
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D is correct
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Is it undeselected or undetected??
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I agree with the answer. B
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