What is a checkpoint?
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What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
How can I restart namenode?
Main Components of Hadoop?
How indexing is done in HDFS?
what is the default replication factor in HDFS?
how can we change Replication Factor?
How does master slave architecture in the hadoop?
Input Split & Record Reader and what they do?
What is the difference between hadoop and other data processing tools?
What is DistributedCache and its purpose?
What are the stable versions of Hadoop?
Are Namenode and job tracker on the same host?
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