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https://issues.apache.org/jira/browse/ARROW-7390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Francois Saint-Jacques resolved ARROW-7390.
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Resolution: Fixed
Issue resolved by pull request 6661
[https://github.com/apache/arrow/pull/6661]
> [C++][Dataset] Concurrency race in Projector::Project
> ------------------------------------------------------
>
> Key: ARROW-7390
> URL: https://issues.apache.org/jira/browse/ARROW-7390
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++ - Dataset
> Reporter: Francois Saint-Jacques
> Assignee: Francois Saint-Jacques
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.17.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> When a DataFragment is invoked by 2 scan tasks of the same DataFragment,
> there's a race to invoke SetInputSchema. Note that ResizeMissingColumns also
> suffers from this race. The ideal goal is to make Project a const method.
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