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https://issues.apache.org/jira/browse/HIVE-24969?focusedWorklogId=631956&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-631956
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ASF GitHub Bot logged work on HIVE-24969:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 31/Jul/21 10:56
Start Date: 31/Jul/21 10:56
Worklog Time Spent: 10m
Work Description: dengzhhu653 commented on a change in pull request #2145:
URL: https://github.com/apache/hive/pull/2145#discussion_r680344086
##########
File path: ql/src/test/results/clientpositive/llap/subquery_multi.q.out
##########
@@ -4769,7 +4769,7 @@ POSTHOOK: Input: default@tempty
85768 almond antique chartreuse lavender yellow Manufacturer#1
Brand#12 LARGE BRUSHED STEEL 34 SM BAG 1753.76 refull
86428 almond aquamarine burnished black steel Manufacturer#1 Brand#12
STANDARD ANODIZED STEEL 28 WRAP BAG 1414.42 arefully
90681 almond antique chartreuse khaki white Manufacturer#3 Brand#31
MEDIUM BURNISHED TIN 17 SM CASE 1671.68 are slyly after the sl
-Warning: Shuffle Join MERGEJOIN[39][tables = [$hdt$_0, $hdt$_1, $hdt$_2]] in
Stage 'Reducer 3' is a cross product
+Warning: Shuffle Join MERGEJOIN[39][tables = [$hdt$_0, $hdt$_2]] in Stage
'Reducer 3' is a cross product
Review comment:
Same as above, the `$hdt$_1` does not participate in `Reducer 3`, as it
produces no output after the semi join(`p_name IN (select p_name from
part_null)`)
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Issue Time Tracking
-------------------
Worklog Id: (was: 631956)
Time Spent: 1.5h (was: 1h 20m)
> Predicates may be removed when decorrelating subqueries with lateral
> --------------------------------------------------------------------
>
> Key: HIVE-24969
> URL: https://issues.apache.org/jira/browse/HIVE-24969
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer
> Reporter: Zhihua Deng
> Assignee: Zhihua Deng
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Step to reproduce：
> {code:java}
> select count(distinct logItem.triggerId)
> from service_stat_log LATERAL VIEW explode(logItems) LogItemTable AS logItem
> where logItem.dsp in ('delivery', 'ocpa')
> and logItem.iswin = true
> and logItem.adid in (
> select distinct adId
> from ad_info
> where subAccountId in (16010, 14863)); {code}
> For predicates _logItem.dsp in ('delivery', 'ocpa')_ and _logItem.iswin =
> true_ are removed when doing ppd: JOIN -> RS -> LVJ. The JOIN has
> candicates: logitem -> [logItem.dsp in ('delivery', 'ocpa'), logItem.iswin =
> true]，when pushing them to the RS followed by LVJ, none of them are pushed,
> the candicates of logitem are removed finally by default, which cause to the
> wrong result.
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