did you maintain the hadoop cluster in-house or used hadoop in the cloud?
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what is the default replication factor in HDFS?
Define a namenode?
What if a namenode has no data?
What is Rack Awareness in Apache Hadoop?
How can I restart namenode?
What does job conf class do?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
Does google use hadoop?
Is it necessary to know java to learn hadoop?
What are the problems with Hadoop 1.0?
Can we have multiple entries in the master files?
What is zookeeper in hadoop?
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