What is speculative execution in Hadoop?
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Explain the benefits of block transfer?
explain Metadata in Namenode?
What is the communication channel between client and namenode/datanode?
What does ‘jps’ command do?
Can hive run without hadoop?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
What does /etc /init.d do?
How to resolve small file problem in hdfs?
Define fault tolerance?
what are the nodes in the Hadoop cluster?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
Where do you specify the Mapper Implementation?
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