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https://issues.apache.org/jira/browse/IMPALA-10894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Quanlong Huang reassigned IMPALA-10894:
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Assignee: Quanlong Huang
> Pushing down predicates in reading "original files" of ACID tables
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>
> Key: IMPALA-10894
> URL: https://issues.apache.org/jira/browse/IMPALA-10894
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
>
> “Original files” don't store special ACID columns. We generate the row id by
> using the row index of the file. The orc reader doesn't provide interfaces
> for retrieving the row index of a row in the file. When predicates are pushed
> down into the orc reader, the returned batch will skip some rows. So we can't
> calculate the actual row index in file using its index in the batch.
> Currently we skip pushing down predicates in reading such files.
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