What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
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What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
Explain use cases where SequenceFile class can be a good fit?
How can you overwrite the replication factors in HDFS?
What is the purpose of button groups?
What if rack 2 and datanode fails?
What does ‘jps’ command do?
What is the difference between rdbms and hadoop?
What is HDFS block size and what did you chose in your project?
On which port does ssh work?
How would you tackle counting words in several text documents?
Define a task tracker?
What is a 'block' in HDFS?
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