What does /var/hadoop/pids do?
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Is hadoop a database?
Does hadoop always require digital data to process?
How many instances of JobTracker can run on a Hadoop Cluser?
what are Task Tracker and Job Tracker?
How do you define "block" in HDFS?
Which one is default InputFormat in Hadoop ?
What is the purpose of DataNode block scanner?
How to keep HDFS cluster balanced?
What is cloudera and why it is used?
what are the nodes in the Hadoop cluster?
What is your favourite tool in the hadoop ecosystem?
How can you overwrite the replication factors in HDFS?
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