What problems can be addressed by using Zookeeper?
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What are the additional benefits YARN brings in to Hadoop?
Why password is needed in ssh localhost?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
How a task is scheduled by a jobtracker?
Explain how input and output data format of the hadoop framework?
What is HDFS Block size? How is it different from traditional file system block size?
Define a datanode?
What platform and java version are required to run hadoop?
What is the difference between rdbms and hadoop?
Should we use RAID in Hadoop or not?
Explain the benefits of block transfer?
Which one is default InputFormat in Hadoop ?
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