What are the limitations of importing RDBMS tables into Hcatalog directly?
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What is DistributedCache and its purpose?
What is Apache Hadoop YARN?
What is HDFS - Hadoop Distributed File System?
What is the difference between hadoop and other data processing tools?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
What is HDFS Block size? How is it different from traditional file system block size?
What is the port number for NameNode
Which are the three main hdfs-site.xml properties?
What is the difference between traditional RDBMS and Hadoop?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
How Mapper is instantiated in a running job?
Explain the basic architecture of Hadoop?