How many instances of tasktracker run on a hadoop cluster?
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How indexing is done in HDFS?
What do you know about sequencefileinputformat?
What do slaves consist of?
What is a checkpoint?
Is secondary namenode a substitute to the namenode?
What is HDFS High Availability?
What is your favourite tool in the hadoop ecosystem?
What is the jobtracker?
What is small file problem in hadoop?
What is a task instance in hadoop? Where does it run?
How will format the HDFS ?
What is crontab? Explain with suitable example?
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