Affects Version/s: None
Fix Version/s: 0.8.0
If the executables for -mapper or -reducer are well-known (grep, cat, awk), Streaming should make sure that the executable is found.
If a script for -mapper or -reducer are in a well-known language (.pl, .py), Streaming should execute it with the correct language processor.
many jobs get started from machines with a different environment from that on the cluster.
On another hand, different clusters may have different environments.
Also, a user may have no access to the cluster machines.
Because of this, a user may be unable to specify correct paths for standard commands, and correct language processors for scripts.
Stream may tailr the commands by prepending the path, or the name of language processor.
Another solution is to make sure that the commands are executed in a "meaningful" environment (with good $PATH, and other variables Unix users are accustomed to count upon).
Once again, Streaming is user facing tool – it is not a library or a hackable example that the users are to modify for their needs. So it should work out of the box.