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https://issues.apache.org/jira/browse/HIVE-15234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15678803#comment-15678803
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Hive QA commented on HIVE-15234:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12839638/HIVE-15234.1.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 9 failed/errored test(s), 10713 tests
executed
*Failed tests:*
{noformat}
TestSparkCliDriver - did not produce a TEST-*.xml file (likely timed out)
(batchId=118)
[stats12.q,groupby4.q,union_top_level.q,groupby10.q,subquery_in.q,mapjoin_filter_on_outerjoin.q,auto_sortmerge_join_4.q,limit_partition_metadataonly.q,load_dyn_part4.q,union3.q,groupby_multi_single_reducer.q,smb_mapjoin_14.q,groupby3_noskew_multi_distinct.q,stats18.q,union_remove_21.q]
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[cbo_rp_subq_exists]
(batchId=54)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[transform_ppr2]
(batchId=133)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[cbo_rp_semijoin]
(batchId=137)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[cbo_rp_subq_in]
(batchId=137)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[join_acid_non_acid]
(batchId=150)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[union_fast_stats]
(batchId=145)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_2]
(batchId=91)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_4]
(batchId=91)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/2210/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/2210/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-2210/
Messages:
{noformat}
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: 9 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12839638 - PreCommit-HIVE-Build
> Semijoin cardinality estimation can be improved
> -----------------------------------------------
>
> Key: HIVE-15234
> URL: https://issues.apache.org/jira/browse/HIVE-15234
> Project: Hive
> Issue Type: Bug
> Components: CBO, Logical Optimizer
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-15234.1.patch, HIVE-15234.patch
>
>
> Currently calcite optimization rules rely on (Hive)SemiJoin to represent semi
> join node, whereas Stats estimate use {{leftSemiJoin}} field of Join to
> estimate stats. As a result semi-join specific stats calculation logic is
> never hit since at plan generation time HiveSemiJoin is created and
> leftSemiJoin field of Join is never set.
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