What are the various functions of Spark Core?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
What is a heartbeat in HDFS?
how would you modify that solution to only count the number of unique words in all the documents?
What ensures load balancing of the server in Kafka?
What are the particular functionalities of Ganglia in Ambari?
Define cell in HBase?
What is meant by Transformation? Give some examples.
What is CAP Theorem? What aspects does Hadoop support from this theorem?
What happens if the block on Hadoop HDFS is corrupted?
Describe Partition and Partitioner in Apache Spark?
How can I import large objects (BLOB and CLOB objects) in Apache Sqoop?
What is the difference between SQL and NoSQL?
Define the management tools in Cassandra?
What is kafka in hadoop?