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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4942) mapreduce.Job has a bunch of methods that throw InterruptedException so its incompatible with MR1
Date Mon, 13 May 2013 16:51:18 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13656106#comment-13656106
] 

Alejandro Abdelnur commented on MAPREDUCE-4942:
-----------------------------------------------

Arun, this is then a catch22. If we don't fix it, we are breaking Hadoop 1 users moving to
Hadoop 2. I guess we'll have have to decide what is more important, to keep compatibility
with Hadoop 1 or Hadoop 0.23. Y! folks may not be happy with the following, but given the
adoption of Hadoop 1 and Hadoop 0.23, we should incline to Hadoop 1. Thoughts?
                
> mapreduce.Job has a bunch of methods that throw InterruptedException so its incompatible
with MR1
> -------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4942
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4942
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.0.2-alpha
>            Reporter: Robert Kanter
>            Assignee: Robert Kanter
>             Fix For: 2.0.5-beta
>
>         Attachments: MAPREDUCE-4942.patch
>
>
> The following methods in MR2's {{org.apache.hadoop.mapreduce.Job}} throw an {{InterruptedException}}
but don't in MR1, which makes them incompatible.  (Their Javadoc comments are also missing
that they throw an {{InterruptedException}} anyway)
> I propose that we wrap the {{InterruptedException}} in a {{RuntimeException}}.  
> {code}
> public float setupProgress() throws IOException, InterruptedException
> public float mapProgress() throws IOException, InterruptedException
> public float reduceProgress() throws IOException, InterruptedException
> public boolean isComplete() throws IOException, InterruptedException
> public boolean isSuccessful() throws IOException, InterruptedException
> public void killJob() throws IOException, InterruptedException
> public void killTask(org.apache.hadoop.mapreduce.TaskAttemptID) throws IOException, InterruptedException
> public void failTask(org.apache.hadoop.mapreduce.TaskAttemptID) throws IOException, InterruptedException
> public Counters getCounters() throws IOException, InterruptedException
> {code}

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