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https://issues.apache.org/jira/browse/ARROW-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17660424#comment-17660424
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Rok Mihevc commented on ARROW-3401:
-----------------------------------
This issue has been migrated to [issue
#19729|https://github.com/apache/arrow/issues/19729] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> [C++] Pluggable statistics collector API for unconvertible CSV values
> ---------------------------------------------------------------------
>
> Key: ARROW-3401
> URL: https://issues.apache.org/jira/browse/ARROW-3401
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
>
> It would be useful to be able to collect statistics (e.g. distinct value
> counts) about values in a column of a CSV file that cannot be converted to a
> desired data type.
> When conversion fails, the converters can call into an abstract API like
> {code}
> statistics_->CannotConvert(token, size);
> {code}
> or something similar
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