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https://issues.apache.org/jira/browse/HIVE-24969?focusedWorklogId=633451&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-633451
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ASF GitHub Bot logged work on HIVE-24969:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Aug/21 11:44
Start Date: 04/Aug/21 11:44
Worklog Time Spent: 10m
Work Description: dengzhhu653 removed a comment on pull request #2145:
URL: https://github.com/apache/hive/pull/2145#issuecomment-833295319
Hi @jcamachor, RS has only one JOIN as his child when parsing the join tree,
looks safe here to push down all predicates through RS if they are belong to
the inputs of the RS. what do you think?
thanks!
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Issue Time Tracking
-------------------
Worklog Id: (was: 633451)
Time Spent: 2h (was: 1h 50m)
> 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: 2h
> 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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