Explain what is sqoop in Hadoop ?
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What happens to a namenode, when job tracker is down?
Who invented hadoop?
Explain InputFormat?
How to use Apache Zookeeper command line interface?
How can you overwrite the replication factors in HDFS?
What is the purpose of button groups?
What is high availability in hadoop?
Explain the hadoop-core configuration?
What are the basic available commands in Hadoop sqoop ?
Why do we need a password-less ssh in fully distributed environment?
In which location Name Node stores its Metadata and why?
What are different hdfs dfs shell commands to perform copy operation?
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