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https://issues.apache.org/jira/browse/PIG-953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Pradeep Kamath updated PIG-953:
-------------------------------

       Resolution: Fixed
    Fix Version/s: 0.6.0
     Hadoop Flags: [Reviewed]
           Status: Resolved  (was: Patch Available)

I ran the test-patch process and junit tests on my local machine since the 
hudson queue was backed up. Here are results - I have explained the reason for 
the javac warnings and release audit warnings in my previous comment. 
{noformat}
test-patch results
====================
....
    [exec] -1 overall.
     [exec]
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]
     [exec]     +1 tests included.  The patch appears to include 6 new or 
modified tests.
     [exec]
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning 
messages.
     [exec]
     [exec]     -1 javac.  The applied patch generated 200 javac compiler 
warnings (more than the trunk's current 197 warnings).
     [exec]
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs 
warnings.
     [exec]
     [exec]     -1 release audit.  The applied patch generated 298 release 
audit warnings (more than the trunk's current 291 warnings).
     [exec]
    
core unit test results
======================
...
    [junit] Running org.apache.pig.test.TestUnion
    [junit] Tests run: 3, Failures: 0, Errors: 0, Time elapsed: 44.03 sec

test-contrib:

BUILD SUCCESSFUL
{noformat}

Patch committed to trunk

> Enable merge join in pig to work with loaders and store functions which can 
> internally index sorted data 
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: PIG-953
>                 URL: https://issues.apache.org/jira/browse/PIG-953
>             Project: Pig
>          Issue Type: Improvement
>    Affects Versions: 0.3.0
>            Reporter: Pradeep Kamath
>            Assignee: Pradeep Kamath
>             Fix For: 0.6.0
>
>         Attachments: PIG-953-2.patch, PIG-953-3.patch, PIG-953-4.patch, 
> PIG-953-5.patch, PIG-953-6.patch, PIG-953-7.patch, PIG-953-8.patch, 
> PIG-953-9.patch, PIG-953.patch
>
>
> Currently merge join implementation in pig includes construction of an index 
> on sorted data and use of that index to seek into the "right input" to 
> efficiently perform the join operation. Some loaders (notably the zebra 
> loader) internally implement an index on sorted data and can perform this 
> seek efficiently using their index. So the use of the index needs to be 
> abstracted in such a way that when the loader supports indexing, pig uses it 
> (indirectly through the loader) and does not construct an index. 

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