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Month: July 2019

What is Monad in Scala?

July 21, 2019 admin 2 Comments

What is Scala Monad? Monad is neither a data type nor class/trait. Monad is a concept. There are lot ways…

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Posted in: Scala, Spark Filed under: Monad in Scala, Scala Monad

Slowly Changing Dimensions in Hive|Hive Slowly Changing Dimensions

July 13, 2019 admin Leave a comment

What is SCDs or Slowly Changing Dimensions? Slowly changing dimensions is a concept related to data warehousing. They track the…

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Posted in: Hive Filed under: Slowly Changing Dimensions

Why MapReduce task won’t run when we perform select * from table in Hive?

July 5, 2019 admin Leave a comment

While executing Hive queries you might have observed that the MapReduce task won’t start when you do perform a Select…

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Posted in: Hadoop, Hive, MapReduce

How to get file of equivalent size while importing data using sqoop?

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I don’t think this question has a particular answer that certainly gives us the required result. Because data is peculiar.…

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Posted in: Hadoop, Sqoop Filed under: Equivalent size files, Sqoop, Uneven Distribution

Recent Posts

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