Why is hadoop faster?
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Explain the use of .mecia class?
What is cloudera and why it is used?
Explain the shuffle?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
How would you tackle counting words in several text documents?
What is a checkpoint?
Which are the three main hdfs-site.xml properties?
How can we check whether namenode is working or not?
What are channel selectors?
What is rack-aware replica placement policy?
Does this lead to security issues?
Can the balancer be run while Hadoop is in use?
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