[
https://issues.apache.org/jira/browse/HIVE-9392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296867#comment-14296867
]
Hive QA commented on HIVE-9392:
-------------------------------
{color:red}Overall{color}: -1 at least one tests failed
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12695176/HIVE-9392.2.patch
{color:red}ERROR:{color} -1 due to 3 failed/errored test(s), 7407 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver_join38
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver_subquery_in
org.apache.hive.hcatalog.templeton.TestWebHCatE2e.getHiveVersion
{noformat}
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/2568/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/2568/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-2568/
Messages:
{noformat}
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: 3 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12695176 - PreCommit-HIVE-TRUNK-Build
> JoinStatsRule miscalculates join cardinality as incorrect NDV is used due to
> column names having duplicated fqColumnName
> ------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-9392
> URL: https://issues.apache.org/jira/browse/HIVE-9392
> Project: Hive
> Issue Type: Bug
> Components: Physical Optimizer
> Affects Versions: 0.14.0
> Reporter: Mostafa Mokhtar
> Assignee: Prasanth Jayachandran
> Priority: Critical
> Fix For: 0.15.0
>
> Attachments: HIVE-9392.1.patch, HIVE-9392.2.patch
>
>
> In JoinStatsRule.process the join column statistics are stored in HashMap
> joinedColStats, the key used which is the ColStatistics.fqColName is
> duplicated between join column in the same vertex, as a result distinctVals
> ends up having duplicated values which negatively affects the join
> cardinality estimation.
> The duplicate keys are usually named KEY.reducesinkkey0.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
