How to change from su to cloudera?
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How to restart Namenode?
Explain how input and output data format of the hadoop framework?
What is a task instance in hadoop? Where does it run?
Can you give us some more details about ssh communication between masters and the slaves?
What's the best way to copy files between HDFS clusters?
What infrastructure do we need to process 100 TB data using Hadoop?
What do masters consist of?
how can we change Replication Factor?
What is a block and block scanner in HDFS?
what is a datanode?
Why do we use Hadoop?
Explain what if rack 2 and datanode fails?