How does NameNode tackle DataNode failures?
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Rack awareness of Namenode?
How many JVMs run on a slave node?
What is the Use of SSH in Hadoop ?
What are the modes in which Apache Hadoop run?
What is the problem with HDFS and streaming data like logs
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
Name the various types of lists supported by bootstrap.
How many maximum jvm can run on a slave node?
Why is Apache Spark faster than Apache Hadoop?
Does this lead to security issues?
What do you know about sequencefileinputformat?
What is a task instance in hadoop? Where does it run?
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