Spark reduceByKey Or groupByKey

[@jonathanduran2921]

Excellent video! These low-level explanations are greatly appreciated.

[@maheshbhatm9998]

Thank You for the detailed explanation.

[@Andhruduful]

great info! well explained

[@febsenthu]

Are we still using RDD when we have DF or DS ?

[@user-dl3ck6ym4r]

Good explained but how can we decided how many mapper should be used?

[@swaroopavuppala4531]

Good expanation bro.....

[@harshal3123]

If we arre using hive for data cleansing and data preparation part and spark for data analysis part then how we can schedule our hive and spark jobs in way that data first automatically get prepared by hive and then spark jobs for data analysis if we are receiving data on daily basis.

[@VasileSurdu]

Use spark to read data from hive for processing also and analysis