What do the master class and the output class do?
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Does the hdfs client decide the input split or namenode?
Can you give us some more details about ssh communication between masters and the slaves?
What does the command mapred.job.tracker do?
What is the meaning of speculative execution in Hadoop? Why is it important?
Explain what if rack 2 and datanode fails?
Is hadoop the future?
What is Rack Awareness in Apache Hadoop?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
How many instances of a jobtracker run on hadoop cluster?
Name the examples of some companies that are using hadoop structure?
What are the site-specific configuration files in Hadoop?
What other technologies have you used in hadoop sta ck?
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