Explain the core components of hadoop?
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What are the different types of Znodes?
Define a task tracker?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
Is hadoop required for data science?
Which one is default InputFormat in Hadoop ?
Knox and Hadoop Development Tools?
How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
What are combiners and its purpose?
Which are the three main hdfs-site.xml properties?
On what basis Namenode will decide which datanode to write on?
What is a checkpoint?
What are active and passive "NameNodes"?
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