[jira] [Created] (MAPREDUCE-3155) Document and likewise implement relevant checks/escape functions for what form of input is acceptable for setting up a container launch context i.e. special chars in resource names, env vars and the commands

["Hitesh Shah (Created) (JIRA)" <ji...@apache.org>]

Document and likewise implement relevant checks/escape functions for what form of input is acceptable for setting up a container launch context i.e. special chars in resource names, env vars and the commands
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                 Key: MAPREDUCE-3155
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3155
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.0
            Reporter: Hitesh Shah
             Fix For: 0.23.0


What should a user of yarn escape/not escape when passing in input for the container launch contexts 
  - localized resources' names are used to create symlinks. 
    - Are special chars supported in symlinks or do they need to be escaped? 
  - Likewise for environment variables and commands. 

Current implementation uses a shell script to setup the environment and launch the commands. What should the user be aware of when setting up the launch context? The input also should be such that a user should not need to change code based on what platform or flavor of shell is being used to setup the env and run the commands. 


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