ARROW-6964: [C++][Dataset] Add multithread support to Scanner::ToTable#5721
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ARROW-6964: [C++][Dataset] Add multithread support to Scanner::ToTable#5721fsaintjacques wants to merge 1 commit into
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fsaintjacques
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Oct 23, 2019
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I prefer the explicit loop than nested Visitor.
fsaintjacques
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Oct 23, 2019
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Maybe it's time to expose a common ResourceContext class that has a MemoryPool and a ThreadPool?
pitrou
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Oct 24, 2019
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I don't think it's useful to make this inline.
bkietz
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Oct 24, 2019
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Maybe this should be a task group instead of a thread pool. Then users can pass a serial task group to signal single threaded operation
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Suggested change
| batches.emplace_back(batch); | |
| batches.emplace_back(std::move(batch)); |
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The caller may request a parallel construction of the table. Scanner was refactor to own the ScanOptions and ScanContext members. The `use_threads` options was added to ScanOptions so the caller can indicate if Scanner is allowed to use parallelism.
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The caller may request a parallel construction of the table. Scanner was refactored to own the ScanOptions and ScanContext members.