What is the use of Combiner?
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What are channel selectors?
What is Hadoop Custom partitioner ?
what are the steps involved in commissioning adding
What if rack 2 and datanode fails?
What problems have you faced when you are working on Hadoop code?
What is the purpose of DataNode block scanner?
What is nlineoutputformat?
What is the purpose of dfsadmin tool?
What is DistributedCache and its purpose?
What does /var/hadoop/pids do?
What Mapper does?
Can Hadoop be compared to NOSQL database like Cassandra?
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