What do you understand from Node redundancy and is it exist in hadoop cluster?
What are the problems with Hadoop 1.0?
How to resolve IOException: Cannot create directory
What is the full form of fsck?
Is hadoop a memory?
Define a namenode?
How to keep HDFS cluster balanced?
Define a job tracker?
How does a namenode handle the failure of the data nodes?
when hadoop enter in safe mode?
Explain why do we need hadoop?
What is nlineoutputformat?
What is Safemode in Apache Hadoop?