How can we change the split size if our commodity hardware has less storage space?
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How to change from su to cloudera?
What is HDFS Block size? How is it different from traditional file system block size?
Explain InputFormat?
What is a checkpoint?
What do you mean by taskinstance?
Who invented hadoop?
Explain the use of tasktracker in the hadoop cluster?
What is the difference between Hadoop and Traditional RDBMS?
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
Define streaming access?
What Mapper does?
What is Schema on Read and Schema on Write?