How can you handle skewed data in Hive or Spark? How can we get rid of data skewness in Spark…
Bigdata developers always have to have some knowledge about internal working of all the components. That’s where we get to…
What is SCDs or Slowly Changing Dimensions? Slowly changing dimensions is a concept related to data warehousing. They track the…
While executing Hive queries you might have observed that the MapReduce task won’t start when you do perform a Select…
Hive has so many clubbing operations like Order By, Sort By etc. Each clause it’s own uses, advantages and disadvantages.…
Assume that we have a table as below: Column_name 1 -2 3 -4 5 Need to write a query to…