Can Hadoop handle many appliations

[ashish pareek]

Hello Everybody,

                       I have a few questions regarding running applications
on Hadoop.

1) Can a single Hadoop cluster simultaneously handle applications of same
type ( or of different type).

2) What are the challenges in running applications of different types in
Hadoop. How Does it differ from running applications of same type.


Thanking you,

Regards,
Ashish.