okumin created HIVE-24203:
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Summary: 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: 2.3.7, 3.1.2, 4.0.0
Reporter: okumin
Assignee: okumin
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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