Why is Data Block size set to 128 MB in Hadoop?
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What is the basic difference between traditional RDBMS and Hadoop?
What is Small File Problem in Hadoop? How can it be resolved?
What do you understand by unit and ()in scala?
What is Disk Balancer in Hadoop?
Which are the three modes in which hadoop can be run?
How ordering in hdfs is finished?
Is it possible to have hadoop job output in multiple directories? If yes, how?
Why Hadoop performs replication, although it results in data redundancy?
We have already sql then why nosql?
What is fsck?
What are input format, input split & record reader and what they do?
Can we write map reduce program in other than java programming language. How?
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