[jira] [Created] (HIVE-20169) Print Final Rows Processed in MapOperator

[BELUGA BEHR (JIRA)]

BELUGA BEHR created HIVE-20169:
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             Summary: Print Final Rows Processed in MapOperator
                 Key: HIVE-20169
                 URL: https://issues.apache.org/jira/browse/HIVE-20169
             Project: Hive
          Issue Type: Improvement
          Components: Operators
    Affects Versions: 3.0.0, 4.0.0
            Reporter: BELUGA BEHR


https://github.com/apache/hive/blob/ac6b2a3fb195916e22b2e5f465add2ffbcdc7430/ql/src/java/org/apache/hadoop/hive/ql/exec/MapOperator.java#L573-L582

This class emits a log message every time it a certain number of records are 
processed, but it does not print a final count.

Overload the {{MapOperator}} class's {{closeOp}} method to print a final log 
message providing the total number of rows read by this mapper.



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