Phone interview for infosys big data (hadoop) direction

Infosys big data (hadoop) telephone interview

1. What core.xml is the main configuration of hadoop cluster configuration 2. What

are the main types of uml associations, the difference between aggregation association and combination association, the difference between aggregation relationship and

combination relationship, and the difference between aggregation relationship (UML)

and combination It is: the aggregation relationship is a "has-a" relationship, and the combination relationship is a "contains-a" relationship; the aggregation relationship indicates that the relationship between the whole and the part is relatively weak, while the combination is relatively strong;

in the aggregation relationship, the part can exist independently of the aggregation. Relationship of classes  :

 

combination, aggregation, implementation, dependency, association .difference hive