What are combiners and its purpose?
On what basis Namenode will decide which datanode to write on?
Can Hadoop be compared to NOSQL database like Cassandra?
What is a Secondary Namenode? Is it a substitute to the Namenode?
What is the difference between SQL and NoSQL?
What are the additional benefits YARN brings in to Hadoop?
what are the steps involved in decommissioning removing
What is the process to change the files at arbitrary locations in HDFS?
What is difference between split and block in hadoop?
How many JVMs run on a slave node?
What is a block and block scanner in HDFS?
What is compute and Storage nodes?
how would you modify that solution to only count the number of unique words in all the documents?
How can you overwrite the replication factors in HDFS?
What are the modules that constitute the Apache Hadoop 2.0 framework?
