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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-20174) Vectorization: Fix NULL / Wrong Results issues in GROUP BY Aggregation Functions
Date Sun, 15 Jul 2018 08:53:00 GMT


Hive QA commented on HIVE-20174:

Here are the results of testing the latest attachment:

{color:green}SUCCESS:{color} +1 due to 11 test(s) being added or modified.

{color:green}SUCCESS:{color} +1 due to 14660 tests passed

Test results:
Console output:
Test logs:

Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase

This message is automatically generated.

ATTACHMENT ID: 12931680 - PreCommit-HIVE-Build

> Vectorization: Fix NULL / Wrong Results issues in GROUP BY Aggregation Functions
> --------------------------------------------------------------------------------
>                 Key: HIVE-20174
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-20174.01.patch, HIVE-20174.02.patch, HIVE-20174.03.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 (HIVE-18758).
> 4) Fix row-mode AVG DECIMAL to enforce output type precision and scale in COMPLETE and
FINAL modes.

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