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https://issues.apache.org/jira/browse/MAPREDUCE-118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12856735#action_12856735
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Amareshwari Sriramadasu commented on MAPREDUCE-118:
---------------------------------------------------

The solution proposed for trunk is "Get the jobid for a job in constructor 
itself", but this contradicts with MAPREDUCE-1505, which creates the RPC client 
lazily. We have to rethink about the solution here. We might have to set the 
jobid after the job submission as Thomas suggested.

Thoughts?

> Job.getJobID() will always return null
> --------------------------------------
>
>                 Key: MAPREDUCE-118
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-118
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.1
>            Reporter: Amar Kamat
>            Assignee: Amareshwari Sriramadasu
>            Priority: Blocker
>             Fix For: 0.21.0
>
>         Attachments: patch-118-0.20.txt, patch-118-0.21.txt, patch-118-1.txt, 
> patch-118.txt
>
>
> JobContext is used for a read-only view of job's info. Hence all the readonly 
> fields in JobContext are set in the constructor. Job extends JobContext. When 
> a Job is created, jobid is not known and hence there is no way to set JobID 
> once Job is created. JobID is obtained only when the JobClient queries the 
> jobTracker for a job-id., which happens later i.e upon job submission.

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