What are the core methods of a Reducer?
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How many InputSplits will be made by hadoop framework?
What is heartbeat in hadoop?
What are the port numbers of namenode?
How does hadoop achieve fault tolerance?
Clarify how ordering in hdfs is finished?
What do you know about the speculative execution?
Explain about Hadoop file system and processing framework?
How do you overwrite replication factor?
Explain the common input formats in hadoop?
Do we need to place 2nd and 3rd data in rack 2 only?
What is the hadoop-core configuration?
Can you give a detailed overview about the Big Data being generated by Facebook?
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