Name the examples of some companies that are using hadoop structure?
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How many instances of tasktracker run on a hadoop cluster?
What is cloudera and why it is used?
What is speculative execution in Hadoop?
How do you define "block" in HDFS?
What Mapper does?
What is the default replication factor?
What is crontab? Explain with suitable example?
Define a combiner?
How did you debug your Hadoop code ?
How many Daemon processes run on a Hadoop system?
What is inputsplit in hadoop? Explain.
Define tasktracker.
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