Explain the shuffle?
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Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
Can Apache Kafka be used without Zookeeper?
Explain the use of .mecia class?
How to change from su to cloudera?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
Who is a 'user' in HDFS?
Is hadoop based on google mapreduce?
Knox and Hadoop Development Tools?
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?
How blocks are distributed among all data nodes for a particular chunk of data?
Which is the best hadoop certification?
Explain what if rack 2 and datanode fails?
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