How we can take Hadoop out of Safe Mode?
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What if rack 2 and datanode fails?
What do you know about sequencefileinputformat?
On which port does ssh work?
What is the main purpose of HDFS fsck command?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
How can we check whether namenode is working or not?
How is security achieved in Apache Hadoop?
Is hadoop the future?
Can we call vms as pseudos?
What is a task instance in hadoop? Where does it run?
What is Hadoop serialization?
what is difference between int and intwritable?
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