[
https://issues.apache.org/jira/browse/ARROW-3404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17660427#comment-17660427
]
Rok Mihevc commented on ARROW-3404:
-----------------------------------
This issue has been migrated to [issue
#19731|https://github.com/apache/arrow/issues/19731] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> [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.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
