What is safe mode in Hadoop?
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What is small file problem in hadoop?
What is a checkpoint?
What exactly is hadoop?
Explain the core components of hadoop?
What are the additional benefits YARN brings in to Hadoop?
How to change Replication Factor For below cases ?
Explain what if rack 2 and datanode fails?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
What are the characteristics of hadoop framework?
What is salary of hadoop developer?
How does a namenode handle the failure of the data nodes?
What is crontab? Explain with suitable example?
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