What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
Why do we need a password-less ssh in fully distributed environment?
What do you mean by taskinstance?
What are the default configuration files that are used in hadoop?
How will format the HDFS ?
Is hadoop a database?
How can we check whether namenode is working or not?
Define a job tracker?
Define a daemon?
Define streaming access?
how would you modify that solution to only count the number of unique words in all the documents?
How to enable trash/recycle bin in hadoop?
What do the master class and the output class do?
How to enable/configure the compression of map output data in hadoop?
Where is the Mapper Output stored?