Review Request 32947: DRILL-2717: Union-All reports new schema change when there is actually no

[Sean Hsuan-Yi Chu]

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Review request for drill and Aman Sinha.


Bugs: DRILL-2717
    https://issues.apache.org/jira/browse/DRILL-2717


Repository: drill-git


Description
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The upstream message returned by Union-All (when innerNext is called on 
Union-All) is corrected


Diffs
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exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/union/UnionAllRecordBatch.java
 61de3a4 
  exec/java-exec/src/test/java/org/apache/drill/TestUnionAll.java 7033013 

Diff: https://reviews.apache.org/r/32947/diff/


Testing
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QA, unit


Thanks,

Sean Hsuan-Yi Chu