What is a 'block' in HDFS?
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Define a combiner?
What is the purpose of RawComparator interface?
What is a task instance in hadoop? Where does it run?
Can the balancer be run while Hadoop is in use?
How to use Apache Zookeeper command line interface?
Name the various types of lists supported by bootstrap.
What is commodity hardware?
What are the basic available commands in Hadoop sqoop ?
What is compute and Storage nodes?
Can Apache Kafka be used without Zookeeper?
What is the full form of fsck?
What is the jobtracker?
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