Define a combiner?
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What are the network requirements for using hadoop?
What is Disk Balancer in Apache Hadoop?
What is a “Distributed Cache” in Apache Hadoop?
What is a block and block scanner in HDFS?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Explain how input and output data format of the hadoop framework?
Can you tell us more about ssh?
Explain a simple Map/Reduce problem.
Which are the two types of 'writes' in HDFS?
What is your favourite tool in the hadoop ecosystem?
Did you ever ran into a lop sided job that resulted in out of memory error
On which port does ssh work?
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