"""
Spark archtecute :
spark core -> file IO features.
spark mllib -> Machine learning models.
spark sql -> sql data manipulations.
spark streaming -> spark streaming data service.
graph x  -> social graph analysis.

USE CASES with spark.

Real-time monitoring
Text analysis
ecommerce pattern analysis
analysing genomes
"""

"""
Preprocessing -> 
ETL 
REview missing values
Normalize data
Standardize categorical values

Building Models ->
select algorithm
Exec algoriths to fit data
tuning hyperparameters

validating models -> test models
accuracy
precision (ppv)
sesitivity (recall)
"""
