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Posted to mapreduce-dev@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2013/05/13 09:43:19 UTC
[jira] [Reopened] (MAPREDUCE-4942) mapreduce.Job has a bunch of
methods that throw InterruptedException so its incompatible with MR1
[ https://issues.apache.org/jira/browse/MAPREDUCE-4942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun C Murthy reopened MAPREDUCE-4942:
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Sigh, I missed this.
There are multiple issues with this patch:
# It's incompatible with hadoop-0.23.x
# Has anyone checked Pig and other projects which have already done necessary to work with hadoop-0.23?
# This badly hoses all users at Yahoo who were brave enough to move to hadoop-0.23 to test YARN.
The above reasons, plus given the fact that compatibility b/w hadoop-1 for o.a.h.mapreduce is a non-starter I propose we revert this.
Thoughts?
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In future, I'd appreciate a ping if/when major changes to user-facing MR apis occur - I can provide a lot of context. Thanks.
> 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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