Hey,
One of our charges is to do auditing and accounting with our file
systems (we use the simplifying assumption that the users are non-
malicious).
Auditing can be done by going through the namenode logs and utilizing
the UGI information to track opens/reads/writes back to the users.
The notion of a client/task ID, independent of IP or username seems
useful for log analysis. DFS's client ID is probably currently your
best bet, but we might improve its implementation, and make the notion
more generic.
It is currently implemented as:
String taskId = conf.get("mapred.ta
