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https://issues.apache.org/jira/browse/MAPREDUCE-3028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13132202#comment-13132202
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[email protected] commented on MAPREDUCE-3028:
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bq.  On 2011-10-20 21:33:43, Robert Evans wrote:
bq.  >

Thanks Bobby! :)


bq.  On 2011-10-20 21:33:43, Robert Evans wrote:
bq.  > 
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/JobEndNotifier.java,
 line 54
bq.  > <https://reviews.apache.org/r/2468/diff/2/?file=51831#file51831line54>
bq.  >
bq.  >     The Javadocs is not completely correct, it does not return the URLs 
(This is really minor)

I've fixed the javadoc.


bq.  On 2011-10-20 21:33:43, Robert Evans wrote:
bq.  > 
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestJobEndNotifier.java,
 line 34
bq.  > <https://reviews.apache.org/r/2468/diff/2/?file=51833#file51833line34>
bq.  >
bq.  >     It is not that common of a practice to have your test extend what it 
is testing.  I don't think it is bad, I just think it would be more accepted, 
if you made the values you want to access package, instead of protected, or if 
you added in getters for those values.

The values I wanted to test should be private to the class since I don't want 
other objects to mess with them. I chose protected so that they'd be easier to 
test :(


bq.  On 2011-10-20 21:33:43, Robert Evans wrote:
bq.  > 
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestJobEndNotifier.java,
 line 134
bq.  > <https://reviews.apache.org/r/2468/diff/2/?file=51833#file51833line134>
bq.  >
bq.  >     Just a note that this can be done with mockito and spy instead of 
overriding this directly, so you would not have to subclass the original class.

It was just easier this way, don't you think?


bq.  On 2011-10-20 21:33:43, Robert Evans wrote:
bq.  > 
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java,
 line 488
bq.  > <https://reviews.apache.org/r/2468/diff/2/?file=51836#file51836line488>
bq.  >
bq.  >     Removing/Renaming these values breaks binary compatibility and 
source compatibility. Even if the name is not that clean it is best to leave it 
alone.  If you must rename it then @Deprecate the old ones, have them point to 
the new ones, and then file a JIRA to remove the old ones in a release or two, 
to give people time to update their code.

The variables were public but the whole interface is 
@InterfaceAudience.Private, @InterfaceStability.Evolving . I also couldn't find 
these variables in 0.20-security (so they were new). Hence removing them should 
not break binary compatibility. Please correct me if I'm wrong.


- Ravi


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On 2011-10-20 23:35:05, Ravi Prakash wrote:
bq.  
bq.  -----------------------------------------------------------
bq.  This is an automatically generated e-mail. To reply, visit:
bq.  https://reviews.apache.org/r/2468/
bq.  -----------------------------------------------------------
bq.  
bq.  (Updated 2011-10-20 23:35:05)
bq.  
bq.  
bq.  Review request for Tom Graves, Robert Evans, Jonathan Eagles, and Mark 
Holderbaugh.
bq.  
bq.  
bq.  Summary
bq.  -------
bq.  
bq.  Job end notification for 0.23 / next. I'm going to work on unit tests 
while you folks review the code.
bq.  
bq.  The only new thing added to 0.20 is that multiple recipients can be 
configured to receive the job-end notification by supplying multiple URLs (one 
parameter separated by a regex)
bq.  
bq.  
bq.  Diffs
bq.  -----
bq.  
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/JobEndNotifier.java
 PRE-CREATION 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java
 1186838 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestJobEndNotifier.java
 PRE-CREATION 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobConf.java
 1186838 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobEndNotifier.java
 1186838 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
 1186838 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ConfigUtil.java
 1186838 
bq.    
branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
 1186838 
bq.  
bq.  Diff: https://reviews.apache.org/r/2468/diff
bq.  
bq.  
bq.  Testing
bq.  -------
bq.  
bq.  Manually tested changes on a single node cluster. Going to add unit tests.
bq.  
bq.  
bq.  Thanks,
bq.  
bq.  Ravi
bq.  
bq.


                
> 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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