Zhihua Deng created HIVE-24969:
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Summary: Predicates are removed by PPD when left semi join
followed by lateral view
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
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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