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https://issues.apache.org/jira/browse/HIVE-24203?focusedWorklogId=500449&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-500449
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ASF GitHub Bot logged work on HIVE-24203:
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Author: ASF GitHub Bot
Created on: 14/Oct/20 06:07
Start Date: 14/Oct/20 06:07
Worklog Time Spent: 10m
Work Description: okumin commented on pull request #1531:
URL: https://github.com/apache/hive/pull/1531#issuecomment-708179596
@kgyrtkirk I have updated some points so that # of rows will never be 0.
Could you please have a look when you have a chance?
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Issue Time Tracking
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Worklog Id: (was: 500449)
Time Spent: 3h (was: 2h 50m)
> Implement stats annotation rule for the LateralViewJoinOperator
> ---------------------------------------------------------------
>
> Key: HIVE-24203
> URL: https://issues.apache.org/jira/browse/HIVE-24203
> Project: Hive
> Issue Type: Improvement
> Components: Physical Optimizer
> Affects Versions: 4.0.0, 3.1.2, 2.3.7
> Reporter: okumin
> Assignee: okumin
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h
> Remaining Estimate: 0h
>
> StatsRulesProcFactory doesn't have any rules to handle a JOIN by LATERAL VIEW.
> This can cause an underestimation in case that UDTF in LATERAL VIEW generates
> multiple rows.
> HIVE-20262 has already added the rule for UDTF.
> This issue would add the rule for LateralViewJoinOperator.
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