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Posted to jira@arrow.apache.org by "Weston Pace (Jira)" <ji...@apache.org> on 2021/04/05 14:07:00 UTC

[jira] [Created] (ARROW-12207) [C++] Add automatic detection of "abandoned" futures

Weston Pace created ARROW-12207:
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             Summary: [C++] Add automatic detection of "abandoned" futures
                 Key: ARROW-12207
                 URL: https://issues.apache.org/jira/browse/ARROW-12207
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Weston Pace


The future contract currently requires that the producer always mark a future finished (not necessarily successfully).  Either through bugs or a misunderstanding of the contract it's possible a producer fails to do so.  This can lead to a memory leak or potentially a deadlock (if arrow::internal::RunSerially is merged).

 

Apache Mesos avoids this by splitting the "Future" class into a producer facing class (named Promise) and a consumer facing class.  If all references to a Promise are lost then the future is marked abandoned (e.g. invalid status).



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