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Explain the basic architecture of Hadoop?
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Can you give us some more details about ssh communication between masters and the slaves?
What do you know by storage and compute node?
On what basis Namenode will decide which datanode to write on?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
How can we change the split size if our commodity hardware has less storage space?
What is speculative execution in Hadoop?
What is difference between split and block in hadoop?
What is a 'block' in HDFS?
Which data storage components are used by hadoop?
explain Metadata in Namenode?
What is Writable & WritableComparable interface?
Mention what is the use of Context Object?
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