What is a task instance in hadoop? Where does it run?
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How to change Replication Factor For below cases ?
What is a heartbeat in HDFS?
What are the site-specific configuration files in Hadoop?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
How many instances of JobTracker can run on a Hadoop Cluser?
Explain the features of stand alone (local) mode?
What does ‘jps’ command do?
What is HDFS Block size? How is it different from traditional file system block size?
What are the basic available commands in Hadoop sqoop ?
Which is the best hadoop certification?
Does this lead to security issues?
How to come out of the insert mode?
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