[jira] [Commented] (ARROW-14642) [C++] ScanNode is not using the filter expression

["Weston Pace (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-14642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17451467#comment-17451467 ] 

Weston Pace commented on ARROW-14642:
-------------------------------------

[~aucahuasi] Can we close this?

> [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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