What problems can be addressed by using Zookeeper?
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How to come out of the insert mode?
What are the two main components of ResourceManager?
What are sink processors?
What are active and passive "NameNodes"?
Why is Apache Spark faster than Apache Hadoop?
What is the purpose of dfsadmin tool?
Explain the use of tasktracker in the hadoop cluster?
What is yarn in hadoop?
What is a heartbeat in HDFS?
What is output format in hadoop?
What are the limitations of importing RDBMS tables into Hcatalog directly?
Define tasktracker.