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https://issues.apache.org/jira/browse/HIVE-20174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt McCline updated HIVE-20174:
--------------------------------
    Description: 
Write new UT tests that use random data and intentional isRepeating batches to 
checks for NULL and Wrong Results for vectorized aggregation functions.

 

BUGs found:

1) AVG/VARIANCE (family) in PARTIAL1 mode was returning NULL instead of count = 
0, sum = 0 (All data types).  For AVG DECIMAL, only return NULL if there was an 
overflow.

2) AVG/MIN/MAX was not detecting repeated NULL correctly for the TIMESTAMP, 
INTERVAL_DAY_TIME, and String Family.  Eliminated redundant code.

3) Fix incorrect calculation  for VARIANCE (family) in PARTIAL2 and FINAL modes.

4) Fix row-mode AVG DECIMAL to enforce output type precision and scale in 
COMPLETE and FINAL modes.

 

  was:
Write new UT tests that use random data and intentional isRepeating batches to 
checks for NULL and Wrong Results for vectorized aggregation functions.

 

BUGs found:

1) AVG/VARIANCE (family) in PARTIAL1 mode was returning NULL instead of count = 
0, sum = 0 (All data types).  For AVG DECIMAL, only return NULL if there was an 
overflow.

2) AVG/MIN/MAX was not detecting repeated NULL correctly for the TIMESTAMP and 
INTERVAL_DAY_TIME.  Eliminated redundant code.

3) Fix incorrect calculation  for VARIANCE (family) in PARTIAL2 and FINAL modes.

4) Fix row-mode AVG DECIMAL to enforce output type precision and scale in 
COMPLETE and FINAL modes.

 


> Vectorization: Fix NULL / Wrong Results issues in GROUP BY Aggregation 
> Functions
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-20174
>                 URL: https://issues.apache.org/jira/browse/HIVE-20174
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-20174.01.patch
>
>
> Write new UT tests that use random data and intentional isRepeating batches 
> to checks for NULL and Wrong Results for vectorized aggregation functions.
>  
> BUGs found:
> 1) AVG/VARIANCE (family) in PARTIAL1 mode was returning NULL instead of count 
> = 0, sum = 0 (All data types).  For AVG DECIMAL, only return NULL if there 
> was an overflow.
> 2) AVG/MIN/MAX was not detecting repeated NULL correctly for the TIMESTAMP, 
> INTERVAL_DAY_TIME, and String Family.  Eliminated redundant code.
> 3) Fix incorrect calculation  for VARIANCE (family) in PARTIAL2 and FINAL 
> modes.
> 4) Fix row-mode AVG DECIMAL to enforce output type precision and scale in 
> COMPLETE and FINAL modes.
>  



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