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https://issues.apache.org/jira/browse/IMPALA-13119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Riza Suminto resolved IMPALA-13119.
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Fix Version/s: Impala 4.5.0
Resolution: Fixed
> CostingSegment.java is initialized with wrong cost
> --------------------------------------------------
>
> Key: IMPALA-13119
> URL: https://issues.apache.org/jira/browse/IMPALA-13119
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 4.4.0
> Reporter: Riza Suminto
> Assignee: Riza Suminto
> Priority: Major
> Fix For: Impala 4.5.0
>
>
> CostingSegment.java has two public constructor: one accept PlanNode, while
> the other accept DataSink as parameter. Both call appendCost method, which
> sum the additionalCost with the segment's current cost_.
> However, if cost_ were ProcessingCost.zero(), it can mistakenly
> setNumRowToConsume to 0.
> [https://github.com/apache/impala/blob/master/fe/src/main/java/org/apache/impala/planner/CostingSegment.java#L114]
>
> The public constructor should just initialize cost_ with ProcessingCost from
> PlanNode or DataSink from constructor.
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