
Explore Hive collection functions for complex data types, including size for arrays and maps, and map_keys and map_values, with practical examples on customer_email and customer_map tables.
Examine map side joins in Hive, where small tables under 25 megabytes are joined in the mapper using buffered data, avoiding the reduce phase.
Learn to use count, min, max, and sum windowing functions over partition by category in Hive to compute per-category price statistics.
Learn to import data as parquet with Sqoop, a columnar, compressed format that ties schema to data, enabling efficient columnar queries, and inspect with parquet tools.
Export data from Hive to MySQL using Sqoop export, moving product_hive into retail_db.product_exported. Validate the transfer by querying the exported table counts to confirm success.
You will start by learning what is Hadoop & Hadoop distributed file system and most common hadoop commands required to work with Hadoop File system
Then you will be introduced to Sqoop Import
Understand lifecycle of sqoop command.
Use sqoop import command to migrate data from Mysql to HDFS.
Use sqoop import command to migrate data from Mysql to Hive.
Use various file formats, compressions, file delimeter,where clause and queries while importing the data.
Understand split-by and boundary queries.
Use incremental mode to migrate the data from Mysql to HDFS.
Further, you will learn Sqoop Export to migrate data.
What is sqoop export
Using sqoop export, migrate data from HDFS to Mysql.
Using sqoop export, migrate data from Hive to Mysql.
Finally, we will start with Apache Hive [Advance]
Hive Intro
External & Managed Tables
Insert & Multi Insert
Data Types & Complex Data Types
Collection Function
Conditional Function
Hive String Functions
Hive Date Functions
Mathematical Function
Hive Analysis
Alter Command
Joins, Multi Joins & Map Joins
Working with Different Files - Parquet,Avro
Compressions
Partitioning
Bucketing
Views
Lateral Views/Explode
Windowing Functions - Rank/Dense Rank/lead/lag/min/max
Window Specification