Can the balancer be run while Hadoop is in use?
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What are the different methods to run Spark over Apache Hadoop?
How to enable recycle bin or trash in hadoop?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
Mention what are the data components used by Hadoop?
What are the modes in which Apache Hadoop run?
What is HDFS block size and what did you chose in your project?
Mention what is the number of default partitioner in Hadoop?
What is HDFS Federation?
How many Daemon processes run on a Hadoop system?
What is the purpose of RawComparator interface?
Where is the Mapper Output intermediate kay-value data stored ?
Explain what if rack 2 and datanode fails?
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