what is a datanode?
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What is Disk Balancer in Apache Hadoop?
Explain the core components of hadoop?
What are the two main components of ResourceManager?
Does Hadoop requires RAID?
What are different hdfs dfs shell commands to perform copy operation?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Explain the Job OutputFormat?
Where is the Mapper Output stored?
Can you tell us more about ssh?
How would you tackle counting words in several text documents?
What is the problem with HDFS and streaming data like logs
Who is a 'user' in HDFS?
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