What is the heartbeat used for?
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Are Namenode and job tracker on the same host?
In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?
How do you categorize a big data?
How does an hadoop application look like or their basic components?
Is hadoop open source?
What are the modules that constitute the Apache Hadoop 2.0 framework?
How indexing is done in HDFS?
On What concept the Hadoop framework works?
What is the difference between a Hadoop and Relational Database and Nosql?
What is the sequencefileinputformat in hadoop?
Who invented hadoop?
What is crontab? Explain with suitable example?
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