Define a combiner?
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What are the functionalities of jobtracker?
What is the purpose of button groups?
Can hbase run without hadoop?
Name the examples of some companies that are using hadoop structure?
What is the process to change the files at arbitrary locations in HDFS?
Should we use RAID in Hadoop or not?
shouldn't DFS be able to handle large volumes of data already?
What is the purpose of dfsadmin tool?
How can we check whether namenode is working or not?
What is the function of ApplicationMaster?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
Who is a 'user' in HDFS?
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