What is Hadoop?1 663
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?435
how would you modify that solution to only count the number of unique words in all the documents?
How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
Why is hadoop faster?
What is a 'block' in HDFS?
Are Namenode and job tracker on the same host?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
What is rack-aware replica placement policy?
How many instances of a jobtracker run on hadoop cluster?
What hadoop does in safe mode?
What are the different types of Znodes?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
How is the option in Hadoop to skip the bad records?
What happens in a textinputformat?
Explain how do ‘map’ and ‘reduce’ works?