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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5531) Binary and source incompatibility in mapreduce.TaskID and mapreduce.TaskAttemptID between branch-1 and branch-2
Date Fri, 27 Sep 2013 19:12:03 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated MAPREDUCE-5531:
-------------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1.2-beta
           Status: Resolved  (was: Patch Available)

+1 from me too.

I just committed this. Thanks [~rkanter]! 

Also, [~zjshen] thanks for the review.
                
> Binary and source incompatibility in mapreduce.TaskID and mapreduce.TaskAttemptID between
branch-1 and branch-2
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5531
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5531
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv1, mrv2
>    Affects Versions: 2.1.1-beta
>            Reporter: Robert Kanter
>            Assignee: Robert Kanter
>            Priority: Blocker
>             Fix For: 2.1.2-beta
>
>         Attachments: MAPREDUCE-5531.patch, MAPREDUCE-5531.patch
>
>
> {{mapreduce.TaskID}} in branch-1 has these two constructors:
> {code:java}
> public TaskID(JobID jobId, boolean isMap, int id)
> public TaskID(String jtIdentifier, int jobId, boolean isMap, int id)
> {code}
> In branch-2, {{mapreduce.TaskID}} no longer has either of the above two constructors.
 
> Also, {{mapreduce.TaskAttemptID}} in branch-1 has this constructor:
> {code:java}
> public TaskAttemptID(String jtIdentifier, int jobId, boolean isMap, int taskId, int id)
> {code}
> In branch-2, {{mapreduce.TaskAttemptID}} no longer his this constructor.
> It looks like these constructors were probably removed because the {{boolean isMap}}
was replaced by an enum, {{TaskType}}.
> This means that any code that tries to use any of those constructors will not be binary
or source compatible (in fact, the missing {{TaskAttemptID}} constructor calls one of the
missing {{TaskID}} constructors).

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