How many instances of tasktracker run on a hadoop cluster?
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Explain the hadoop configuration files at present?
What is crontab? Explain with suitable example?
what is the typical block size of an HDFS block?
What do masters consist of?
Can Hadoop be compared to NOSQL database like Cassandra?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
How can I install Cloudera VM in my system?
What are the two main components of ResourceManager?
What do shuffling do?
What is commodity hardware?
What is the heartbeat used for?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?