Define data cleansing?
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How does hadoop achieve fault tolerance?
What is heartbeat in hadoop?
What sorts of actions does the job tracker process perform?
What does secondary name-node means?
What is purpose of RecordWriter in Hadoop?
How Hadoop is cost-effective?
What is replication factor?
What is the procedure for namenode recovery?
Explain how Hadoop cluster hardware planning and provisioning is done?
What is namenode?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
What the information segments utilized by hadoop are?
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