Francois Saint-Jacques created ARROW-7390:
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Summary: [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
Reporter: Francois Saint-Jacques
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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