|| at Jul 14, 2008 at 1:38 pm
One benefit is that if your map or reduce behaves badly it can't take
down the task tracker.
In our case we have some poorly behaved external native libraries we
use, and we have to forcibly ensure that the child vms are killed when
the child main finishes (often by kill -9), so the fact the child (task)
is a separate jvm process is very helpful.
The downside is the jvm start time. Has anyone experimented with the jar
freezing for more than the standard boot class path jars to speed up
Shengkai Zhu wrote:
What's the benefits from such design compared to multi-thread?
Attributor - Program the Web <http://www.attributor.com/
Attributor is hiring Hadoop Wranglers and coding wizards, contact if