What is the default block size in hdfs?
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Which data storage components are used by hadoop?
What do you know about nlineoutputformat?
What are different hdfs dfs shell commands to perform copy operation?
What is the difference between Apache Hadoop and RDBMS?
What is a checkpoint?
What do sorting do?
Which files are used by the startup and shutdown commands?
What is Apache Hadoop YARN?
Explain the overview of hadoop history breifly?
What is the purpose of button groups?
What is salary of hadoop developer?
How does NameNode tackle DataNode failures?
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