
HBase and Other Big Data Databases • 115
it; then we or someone else use a dierent program (or a dierent copy of
the same program) to open it up and work with it again.
What do you do with a 15-terabyte le, or a 1-petabyte le? You invert
this relationship. You take your soware to the data. is does not
mean that you move your soware around on a thumb drive, but you
do install it on the machine where the data reside. e data may take
days to move. It is more ecient to install the soware where the data
is. is leads to the idea of distribution of processing. If you are paint-
ing a house, you can paint it alone, but it is much faster if you ...