Define a job tracker?
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How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
What is a Combiner?
What is Partioner in hadoop? Where does it run
What are the hadoop's three configuration files?
What is the Use of SSH in Hadoop ?
How can one increase replication factor to a desired value in Hadoop?
Why password is needed in ssh localhost?
What is the purpose of dfsadmin tool?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What is the problem with small files in Apache Hadoop?
Which are the two types of 'writes' in HDFS?
How hdfa differs with nfs?