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Posted to github@arrow.apache.org by "jtanx (via GitHub)" <gi...@apache.org> on 2025/04/25 10:33:21 UTC

Re: [I] [C++] [Acero] Threading issues in the groupby node [arrow]

jtanx commented on issue #46227:
URL: https://github.com/apache/arrow/issues/46227#issuecomment-2830043076

   After some further digging, I see that the synchronization is basically accounted for by `input_counter_` (although I'm not sure about [this case](https://github.com/apache/arrow/blob/4d566e60c5a12f047e1c0f36b9733a56513a7d43/cpp/src/arrow/acero/groupby_aggregate_node.cc#L377-L378)). I'm guessing that these are more likely to be false positives from helgrind not handling atomic variable access correctly.


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