jay vyas created YARN-1952:
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Summary: getRunAsUser should be overridable
Key: YARN-1952
URL: https://issues.apache.org/jira/browse/YARN-1952
Project: Hadoop YARN
Issue Type: Improvement
Components: nodemanager
Reporter: jay vyas
The getRunAsUser implementation is package private, but there is no comment
stating why.
* I suggest we open it up so that we can override it without having to write
code in a special hadoop namespace.
Alternatively:
* Lets provide a clear comment about why its package private, if there is a
good reason.
Here is my justification for making the method public.
There are certain implementations where we want more nuanced LCE behaviour.
In one case, we might want to allow users to override the behaviour of
YARN-1235 (i.e. in highly secured clusters)
{noformat}
getRunAsUser(String u){ return u ; }
{noformat}
Or maybe I'd want to route different users to different super implementations:
{noformat}
mary,tom,sally -> execute using analytics1
joe,bob,kim -> execute using analytics2
jim,cara -> nobody
{noformat}
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