How hdfa differs with nfs?
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What stored in HDFS?
What is speculative execution in Hadoop?
What are the basic available commands in Hadoop sqoop ?
What happens to a namenode, when job tracker is down?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Knox and Hadoop Development Tools?
Can Apache Kafka be used without Zookeeper?
What is 'Key value pair' in HDFS?
What do shuffling do?
What is the sequencefileinputformat in hadoop?
How can we check whether namenode is working or not?
Explain what is the purpose of RecordReader in Hadoop?