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https://issues.apache.org/jira/browse/GOBBLIN-1126?focusedWorklogId=430433&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-430433
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ASF GitHub Bot logged work on GOBBLIN-1126:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 04/May/20 21:40
            Start Date: 04/May/20 21:40
    Worklog Time Spent: 10m 
      Work Description: autumnust commented on a change in pull request #2966:
URL: https://github.com/apache/incubator-gobblin/pull/2966#discussion_r419745811



##########
File path: 
gobblin-compaction/src/main/java/org/apache/gobblin/compaction/mapreduce/RecordKeyDedupReducerBase.java
##########
@@ -88,21 +87,33 @@ protected void reduce(KI key, Iterable<VI> values, Context 
context)
       numVals++;
     }
 
+    writeRetainValue(valueToRetain, context);

Review comment:
       Isn't this method only write single value? 




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 430433)
    Time Spent: 1h  (was: 50m)

> Supporting Column Projection in OrcStruct in compaction for making shuffle 
> key slimmer
> --------------------------------------------------------------------------------------
>
>                 Key: GOBBLIN-1126
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-1126
>             Project: Apache Gobblin
>          Issue Type: Bug
>            Reporter: Lei Sun
>            Priority: Major
>          Time Spent: 1h
>  Remaining Estimate: 0h
>




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