What are the benefits of block transfer?
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Does Hadoop requires RAID?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
how to share the metastore within multiple users?
Rack awareness of Namenode?
What is a task instance in hadoop? Where does it run?
Define tasktracker.
What is the problem with small files in Apache Hadoop?
How indexing is done in HDFS?
What are sink processors?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What is the main purpose of HDFS fsck command?
What is the purpose of DataNode block scanner?
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