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https://issues.apache.org/jira/browse/IMPALA-11123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Riza Suminto resolved IMPALA-11123.
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Fix Version/s: Impala 4.4.0
Resolution: Fixed
> Optimize count(*) for ORC scans
> -------------------------------
>
> Key: IMPALA-11123
> URL: https://issues.apache.org/jira/browse/IMPALA-11123
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Quanlong Huang
> Assignee: Riza Suminto
> Priority: Critical
> Labels: ramp-up
> Fix For: Impala 4.4.0, Impala 4.1.0
>
>
> IMPALA-5036 and IMPALA-6501 added an optimisation for count\(*\) in Parquet
> and Kudu scans that avoids materialising dummy rows. We should do something
> similar for ORC.
> Refer IMPALA-5036 for more details.
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