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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-15517) NOT (x <=> y) returns NULL if x or y is NULL
Date Wed, 01 Feb 2017 03:02:51 GMT


Hive QA commented on HIVE-15517:

Here are the results of testing the latest attachment:

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

{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 10993 tests executed
*Failed tests:*
TestCliDriver - did not produce a TEST-*.xml file (likely timed out) (batchId=13)
TestDerbyConnector - did not produce a TEST-*.xml file (likely timed out) (batchId=235)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query14] (batchId=223)

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.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 4 tests failed

This message is automatically generated.

ATTACHMENT ID: 12850345 - PreCommit-HIVE-Build

> NOT (x <=> y) returns NULL if x or y is NULL
> --------------------------------------------
>                 Key: HIVE-15517
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, Operators, Query Processor, SQL
>    Affects Versions: 1.2.1
>            Reporter: Alexey Bedrintsev
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-15517.01.patch
> I created a table as following:
> create table test(x string, y string);
> insert into test values ('q', 'q'), ('q', 'w'), (NULL, 'q'), ('q', NULL), (NULL, NULL);
> Then I try to compare values taking NULLs into account:
> select *, x<=>y, not (x<=> y), (x <=> y) = false from test;
> OK
> q       q       true    false   false
> q       w       false   true    true
> q       NULL    false   NULL    true
> NULL    q       false   NULL    true
> NULL    NULL    true    NULL    false
> I expected that 4th column will be the same as 5th one but actually got NULL as result
of "not false" and "not true" expressions.
> Hive 1.2.1000.
> Subversion git://c66-slave-20176e25-3/grid/0/jenkins/workspace/HDP-parallel-centos6/SOURCES/hive
-r da6c690d384d1666f5a5f450be5cbc54e2fe4bd6
> Compiled by jenkins on Fri Aug 26 01:39:52 UTC 2016
> From source with checksum c30648316a632f7a753f4359e5c8f4d6

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