What does the command mapred.job.tracker do?
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What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What is MapFile?
What is speculative execution in Hadoop?
Does the hdfs client decide the input split or namenode?
Define fault tolerance?
What are the hadoop's three configuration files?
Is hadoop obsolete?
What platform and java version are required to run hadoop?
What is the port number for NameNode
What is Row Key?
What exactly is hadoop?
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?
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