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https://issues.apache.org/jira/browse/IMPALA-12960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yida Wu resolved IMPALA-12960.
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Fix Version/s: Impala 4.4.0
Resolution: Fixed
> Incorrect RowsPassedThrough Metric in Streaming Aggregation
> -----------------------------------------------------------
>
> Key: IMPALA-12960
> URL: https://issues.apache.org/jira/browse/IMPALA-12960
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Reporter: Yida Wu
> Assignee: Yida Wu
> Priority: Major
> Fix For: Impala 4.4.0
>
>
> The logic in grouping aggregation uses the row number of the output batch as
> the number of the current aggregator returning, however the output batch is
> shared with other aggregators in streaming aggregation and may not
> necessarily start at 0 initially, this can result in incorrect numbering and
> subsequently affect the accuracy of the RowsPassedThrough metric.
> https://github.com/apache/impala/blob/f55077007bf68e6cbeaa15cf270c333af847a1f1/be/src/exec/grouping-aggregator.cc#L519
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