Is it possible to provide multiple inputs to hadoop? If yes, explain.
what is the default replication factor in HDFS?
What is zookeeper in hadoop?
How Mapper is instantiated in a running job?
What is a namenode? How many instances of namenode run on a hadoop cluster?
On what basis name node distribute blocks across the data nodes?
Explain Erasure Coding in Apache Hadoop?
What is a task instance in hadoop? Where does it run?
Is hadoop a memory?
Why the name ‘hadoop’?
How to change from su to cloudera?
What is Writable & WritableComparable interface?
How to change replication factor of files already stored in HDFS?