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https://issues.apache.org/jira/browse/ARROW-3404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-3404:
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External issue URL: https://github.com/apache/arrow/issues/19731
> [C++] Make CSV chunker faster
> -----------------------------
>
> Key: ARROW-3404
> URL: https://issues.apache.org/jira/browse/ARROW-3404
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 0.11.0
> Reporter: Antoine Pitrou
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.11.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Currently the CSV chunker can be the bottleneck in multi-threaded reads
> (starting from 6 threads, according to my experiments). One way to make it
> faster is to consider by default that CSV values cannot contain newline
> characters (overridable via a setting), and then simply search for the last
> newline character in each block of data.
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