hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19326) stats auto gather: incorrect aggregation during UNION queries (may lead to incorrect results)
Date Wed, 27 Jun 2018 21:35:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16525649#comment-16525649
] 

Hive QA commented on HIVE-19326:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12929293/HIVE-19326.10.patch

{color:green}SUCCESS:{color} +1 due to 4 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 14611 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestAccumuloCliDriver.testCliDriver[accumulo_single_sourced_multi_insert]
(batchId=253)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[union_fast_stats] (batchId=168)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/12194/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/12194/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-12194/

Messages:
{noformat}
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
Tests exited with: TestsFailedException: 2 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12929293 - PreCommit-HIVE-Build

> stats auto gather: incorrect aggregation during UNION queries (may lead to incorrect
results)
> ---------------------------------------------------------------------------------------------
>
>                 Key: HIVE-19326
>                 URL: https://issues.apache.org/jira/browse/HIVE-19326
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>            Reporter: Sergey Shelukhin
>            Assignee: Zoltan Haindrich
>            Priority: Critical
>         Attachments: HIVE-19326.01wip01.patch, HIVE-19326.02.patch, HIVE-19326.03.patch,
HIVE-19326.04.patch, HIVE-19326.05.patch, HIVE-19326.06.patch, HIVE-19326.06wip01.patch, HIVE-19326.06wip02.patch,
HIVE-19326.06wip03.patch, HIVE-19326.06wip04.patch, HIVE-19326.06wip05.patch, HIVE-19326.07.patch,
HIVE-19326.08.patch, HIVE-19326.09.patch, HIVE-19326.10.patch
>
>
> Found when investigating the results change after converting tables to MM, turns out
the MM result is correct but the current one is not.
> The test ends like so:
> {noformat}
> desc formatted small_alltypesorc_a;
> ANALYZE TABLE small_alltypesorc_a COMPUTE STATISTICS;
> desc formatted small_alltypesorc_a;
> insert into table small_alltypesorc_a select * from small_alltypesorc1a;
> desc formatted small_alltypesorc_a;
> {noformat}
> The results from the descs in the golden file are:
> {noformat}
> 	COLUMN_STATS_ACCURATE	{\"BASIC_STATS\":\"true\"}
> 	numFiles            	1                   
> 	numRows             	5                               
> ...
> 	COLUMN_STATS_ACCURATE	{\"BASIC_STATS\":\"true\"}
> 	numFiles            	1                   
> 	numRows             	15                                
> ...
> 	COLUMN_STATS_ACCURATE	{\"BASIC_STATS\":\"true\"}
> 	numFiles            	2                   
> 	numRows             	20                              
> {noformat}
> Note the result change after analyze - the original nomRows is inaccurate, but  BASIC_STATS
is set to true.
> I am assuming with metadata only optimization this can produce incorrect results.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message