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Posted to issues@arrow.apache.org by "amirgon (via GitHub)" <gi...@apache.org> on 2024/07/03 08:29:55 UTC

[I] [C++][ArrowFlight] Crash due to UCS thread mode [arrow]

amirgon opened a new issue, #43130:
URL: https://github.com/apache/arrow/issues/43130

   ### Describe the bug, including details regarding any error messages, version, and platform.
   
   ArrowFlight UCX transport sets `UCS_THREAD_MODE_SERIALIZED` mode:
   
   https://github.com/apache/arrow/blob/fd6bf5a532245ae80908d52b90d5462f9b2f9882/cpp/src/arrow/flight/transport/ucx/ucx_client.cc#L100
   
   This can cause UCX to crash (mpool corruption).
   This happens when buffer is deallocated on a different thread. In such case two threads access UCX memory pool simultaneously.   
   To fix that, need to change thread mode to `UCS_THREAD_MODE_MULTI`.
   
   See discussion on UCX forum: https://github.com/openucx/ucx/discussions/9987
   
   Opened a PR: https://github.com/apache/arrow/pull/43120
   
   ### Component(s)
   
   C++, FlightRPC


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Re: [I] [C++][ArrowFlight] Crash due to UCS thread mode [arrow]

Posted by "lidavidm (via GitHub)" <gi...@apache.org>.
lidavidm commented on issue #43130:
URL: https://github.com/apache/arrow/issues/43130#issuecomment-2210172592

   Issue resolved by pull request 43120
   https://github.com/apache/arrow/pull/43120


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Re: [I] [C++][ArrowFlight] Crash due to UCS thread mode [arrow]

Posted by "lidavidm (via GitHub)" <gi...@apache.org>.
lidavidm closed issue #43130: [C++][ArrowFlight] Crash due to UCS thread mode 
URL: https://github.com/apache/arrow/issues/43130


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