How is HDFS fault tolerant?
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What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What is the InputFormat ?
What is Rack awareness?
What is the problem with small files in Apache Hadoop?
What should be the ideal replication factor in Hadoop Cluster?
What is 'Key value pair' in HDFS?
What is zookeeper in hadoop?
explain Metadata in Namenode?
What if a namenode has no data?
What is small file problem in hadoop?
What is nlineoutputformat?
What is the default block size in hdfs?
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