What is the meaning of speculative execution in Hadoop? Why is it important?
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Why do we use HDFS for applications having large data sets and not when there are lot of small files?
Explain why the name ‘hadoop’?
What alternate way does HDFS provides to recover data in case a Namenode
Is it necessary to know java to learn hadoop?
Explain the core components of hadoop?
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What is structured data?
Should we use RAID in Hadoop or not?
what is difference between int and intwritable?
What are sink processors?
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