What is nlineoutputformat?
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What is Row Key?
Can you explain how do ‘map’ and ‘reduce’ work?
What do masters consist of?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
What is the difference between Hadoop and Traditional RDBMS?
What is the meaning of speculative execution in Hadoop? Why is it important?
Define a job tracker?
How would you tackle counting words in several text documents?
Which files are used by the startup and shutdown commands?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
what is difference between int and intwritable?
Does this lead to security issues?
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