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https://issues.apache.org/jira/browse/MAPREDUCE-3028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13132218#comment-13132218
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Ravi Prakash commented on MAPREDUCE-3028:
-----------------------------------------
@Hitesh: I gathered requirements from a couple of folks at Yahoo! This was one
dream / wish. I'll ask them again where it could be helpful if you want. In any
case, if you don't want to use it (which is the default), you only have to not
specify "mapreduce.job.end-notification.url.separator.regex".
The openConnection only returns a URLConnection object. I agree its ambiguously
named. In fact that is the only way to get a URLConnection object I know.
Quoting http://download.oracle.com/javase/6/docs/api/java/net/URLConnection.html
# The connection object is created by invoking the openConnection method on a
URL.
# The setup parameters and general request properties are manipulated.
# The actual connection to the remote object is made, using the connect method.
# The remote object becomes available. The header fields and the contents of
the remote object can be accessed.
> Support job end notification in .next /0.23
> -------------------------------------------
>
> Key: MAPREDUCE-3028
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3028
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Mohammad Kamrul Islam
> Assignee: Ravi Prakash
> Priority: Blocker
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-3028.branch-0.23.patch, MAPREDUCE-3028.patch,
> MAPREDUCE-3028.patch
>
>
> Oozie primarily depends on the job end notification to determine when the
> job finishes. In the current version, job end notification is implemented in
> job tracker. Since job tracker will be removed in the upcoming hadoop release
> (.next), we wander where this support will move. I think this best effort
> notification could be implemented in the new Application Manager as one of
> the last step of job completion.
> Whatever implementation will it be, Oozie badly needs this feature to be
> continued in next releases as well.
>
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