Compare Apache Hadoop and Apache Spark?
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Compare Hadoop 2 and Hadoop 3?
What is heartbeat in hadoop?
Doesn’t google have its very own version of dfs?
Explain what is a sequence file in hadoop?
What happen if a datanode loses network connection for a few minutes?
What happens if number of reducers are 0?
What is replication factor?
How to do ‘map’ and ‘reduce’ works?
What is the best practice to deploy the secondary name node?
How Big is ‘Big Data’?
Why do we need Hadoop?
What happen when namenode enters in safemode in hadoop?
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