Mention what is the use of Context Object?
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What is version-id mismatch error in hadoop?
What is the difference between rdbms and hadoop?
What do shuffling do?
Is it necessary to know java to learn hadoop?
Is hadoop the future?
What happens to job tracker when namenode is down?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
What are the basic available commands in Hadoop sqoop ?
Can Hadoop be compared to NOSQL database like Cassandra?
Can you explain how do ‘map’ and ‘reduce’ work?
What does /etc /init.d do?
What are the two main parts of the hadoop framework?
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