What are combiners and its purpose?
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How many maximum jvm can run on a slave node?
Which one is default InputFormat in Hadoop ?
How the Client communicates with HDFS?
What is HDFS ? How it is different from traditional file systems?
Where is the Mapper Output intermediate kay-value data stored ?
How do you define "block" in HDFS?
How to use Apache Zookeeper command line interface?
What happens to job tracker when namenode is down?
Define a combiner?
What are combiners and its purpose?
What are the core components of Apache Hadoop?
Where do you specify the Mapper Implementation?
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