How many Daemon processes run on a Hadoop system?
On which port does ssh work?
Explain the overview of hadoop history breifly?
What is the Use of SSH in Hadoop ?
What is output format in hadoop?
What is the difference between Hadoop and Traditional RDBMS?
what are the nodes in the Hadoop cluster?
What are combiners and its purpose?
what is the typical block size of an HDFS block?
What is the default block size in hdfs?
What is Row Key?
How can I restart namenode?
What are the modules that constitute the Apache Hadoop 2.0 framework?