How to get user input in the form of a DAG in a text file

[Abdul Qadeer]

Hi,

For a pipeline workload, I want to use the
Input-process-output based abstraction for the
end user.  End user will need to provide his
pipeline DAG as input.  One option is to use
Dot language for user input and then map it
to Tez DAG API
(http://www.graphviz.org/content/dot-language).


My question is:

Is there some facility available in Tez to
get DAG based input in text format from
user? Or
if you could suggest me something better
than my current dot based plan?


Thanks,
-Abdul