[GitHub] [arrow] westonpace commented on issue #36346: [C++][S3] Crash on exit

["westonpace (via GitHub)" <gi...@apache.org>]

westonpace commented on issue #36346:
URL: https://github.com/apache/arrow/issues/36346#issuecomment-1613285303

   @pitrou and I had some discussion of this ticket.
   
   As @pitrou mentioned, we are currently calling finalize too late.  We can't wait for the thread pools to shutdown because that happens at program exit and by then it is too late to call AWS shutdown.
   
   > Edit: C++17 has a [shared-exclusive mutex](https://en.cppreference.com/w/cpp/thread/shared_mutex) that would be used for that: grab the mutex in shared mode for all S3 client calls, and in exclusive mode in FinalizeS3.
   
   This approach sounds like the simplest solution.


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