[jira] Commented: (HADOOP-544) Replace the job, tip and task ids with objects.

["Devaraj Das (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589926#action_12589926 ] 

Devaraj Das commented on HADOOP-544:
------------------------------------

Enis, could you please update the patch. This seems like a good time to get it in. Thanks!

> Replace the job, tip and task ids with objects.
> -----------------------------------------------
>
>                 Key: HADOOP-544
>                 URL: https://issues.apache.org/jira/browse/HADOOP-544
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.18.0
>            Reporter: Owen O'Malley
>            Assignee: Enis Soztutar
>             Fix For: 0.18.0
>
>         Attachments: id_v1.patch, id_v2.patch, id_v3.patch, id_v4.patch, id_wip1.patch
>
>
> I think that it is silly to have tools parsing the strings that the framework builds for task ids. I propose:
> class JobId implements Writable {
>    public int getJobId() {...}
> }
> class TaskId implements Writable {
>   public JobId getJobId(); 
>   public boolean isMap() { ... }
>   public int getTaskId() { ... }
> }
> class TaskAttemptId implements Writable {
>   public TaskId getTaskId();
>   public int getAttemptId();
> }
> each of the classes will have a toString() method that generates the current string.

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