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https://issues.apache.org/jira/browse/ARROW-14642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17441322#comment-17441322
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David Li commented on ARROW-14642:
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> And from there I think the predicate is being accumulated but not used or
> passed to the proper Parquet reader.
Sorry, so you mean that we're not doing pushdown for the particular predicate
tested? I think if it's one that could be pushed down to the metadata, then we
can implement it (though you probably can't get rid of the FilterNode still).
> [C++] ScanNode is not using the filter expression
> -------------------------------------------------
>
> Key: ARROW-14642
> URL: https://issues.apache.org/jira/browse/ARROW-14642
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 7.0.0
> Reporter: Percy Camilo Triveño Aucahuasi
> Assignee: Percy Camilo Triveño Aucahuasi
> Priority: Major
> Labels: dataset, query-engine
> Fix For: 7.0.0
>
>
> The ScanNode can not apply predicate push-down, it seems the are some
> fragments that are not able to use or setting up properly the filter
> expression.
> {code:c++}
> auto options = std::make_shared<ScanOptions>();
> options->filter = filter_expression;
> compute::MakeExecNode("scan", plan.get(), {}, ScanNodeOptions{dataset,
> options}));
> {code}
> Also, if the ScanOptions doesn't have a projection expression the code just
> crash and I think I should create a default expression to include all the
> fields from the dataset schema.
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