What do you mean by taskinstance?
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How do you define "block" in HDFS?
Define a metadata?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
Mention what is the number of default partitioner in Hadoop?
Does google use hadoop?
What is Rack awareness?
What is HDFS ? How it is different from traditional file systems?
Explain the shuffle?
What is the purpose of RawComparator interface?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
Define a job tracker?
What are watches?
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