What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
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What is the purpose of button groups?
Can Hadoop be compared to NOSQL database like Cassandra?
What is zookeeper in hadoop?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
What is Partioner in hadoop? Where does it run
Does google use hadoop?
What is the sequencefileinputformat in hadoop?
How did you debug your Hadoop code ?
Explain the wordcount implementation via hadoop framework ?
How to exit the vi editor?
How indexing is done in HDFS?
What are the site-specific configuration files in Hadoop?