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https://issues.apache.org/jira/browse/HADOOP-544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Enis Soztutar updated HADOOP-544:
---------------------------------
Release Note:
This issue introduces new classes JobID, TaskID and TaskAttemptID, which should
be used instead of their string counterparts. Functions in JobClient,
TaskReport, RunningJob, jobcontrol.Job and TaskCompletionEvent that use string
arguments are deprecated in favor of the corresponding ones that use ID
objects.
Applications can use xxxID.toString() and xxxID.forName() methods to
convert/restore objects to/from strings.
was:
This issue introduces new classes JobID, TaskInProgressID and TaskID, which
should be used instead of their string counterparts. Functions in JobClient,
TaskReport, RunningJob, jobcontrol.Job and TaskCompletionEvent that use string
arguments are deprecated in favor of the corresponding ones that use ID
objects.
Applications can use xxxID.toString() and xxxID.forName() methods to
convert/restore objects to/from strings.
Hadoop Flags: [Incompatible change, Reviewed] (was: [Reviewed,
Incompatible change])
Changed the names of the classes in the release note, I will also fix and
recommit CHANGES.txt.
> 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_v5.patch, id_v6.patch, id_v7.patch, id_v8.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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