What problems have you faced when you are working on Hadoop code?
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How to change replication factor of files already stored in HDFS?
How many instances of tasktracker run on a hadoop cluster?
How you can contact your client everyday ?
What are the port numbers of namenode, job tracker and task tracker?
What is a secondary namenode?
What is the process to change the files at arbitrary locations in HDFS?
Explain what is the purpose of RecordReader in Hadoop?
What are the modes in which Apache Hadoop run?
What infrastructure do we need to process 100 TB data using Hadoop?
What are the two main parts of the hadoop framework?
Define a namenode?
What are the two main components of ResourceManager?
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