How many instances of tasktracker run on a hadoop cluster?
What is high availability in hadoop?
How to come out of the insert mode?
What is a “Distributed Cache” in Apache Hadoop?
What is a checkpoint?
What should be the ideal replication factor in Hadoop Cluster?
What's the best way to copy files between HDFS clusters?
Is hadoop required for data science?
Explain what happens in textinformat ?
What happens to a NameNode that has no data?
Explain the shuffle?
Mention what are the data components used by Hadoop?
Why do we use Hadoop?