[GitHub] [arrow] icexelloss commented on pull request #13426: [DRAFT] ARROW-16894: [C++] Add Benchmarks for Asof Join Node

[GitBox <gi...@apache.org>]

icexelloss commented on PR #13426:
URL: https://github.com/apache/arrow/pull/13426#issuecomment-1171297967

   @westonpace Thanks for the detailed reply. I remember when I use 
   
   ```
   ExecContext ctx(default_memory_pool(), arrow::internal::GetCpuThreadPool());
   ```
   
   in asof_join test, I got wrong results and see data coming in out of order and therefore, having to use
   
   ```
   ExecContext ctx(default_memory_pool(), nullptr);
   ```
   
   - I wonder what's the threading model for the latter? Is it just one thread doing everything?


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