Re: [I] flight FlightServerBase debugging with breakpoints not working [arrow]

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

amoeba commented on issue #38435:
URL: https://github.com/apache/arrow/issues/38435#issuecomment-1778011269

   Hi @xshirax, can you provide a reproducible set of steps to help us diagnose where things are going wrong? I am able to hit breakpoints in C++ code when running a Python script through my debugger so long as I set things up right. A rough sketch of how I did this is:
   
   1. Built libarrow (Arrow C++) from a recent source checkout with the `ninja-debug-flight` preset and installed into a conda environment. See [the Python docs](https://arrow.apache.org/docs/developers/python.html#building-on-linux-and-macos) for more detail.
   2. Built and installed PyArrow into that conda environment. See [the Python docs](https://arrow.apache.org/docs/developers/python.html#building-on-linux-and-macos) for more detail.
     2a. `python setup.py build_ext --inplace --build-type=debug`
     2b. `pip install -e . --no-build-isolation`
   3. Created a minimal Flight server based on the [Python Cookbook](https://arrow.apache.org/cookbook/py/flight.html#simple-parquet-storage-service-with-arrow-flight)
   4. Ran `lldb python -- flight_server.py`
   5. Set a breakpoint on `arrow::flight::FlightServerBase::Serve`. No locations should be found yet as we haven't loaded PyArrow but lldb will pick them up.
   
   I use LLDB here but I expect gdb would work just as well. Can you look through my steps to see where we don't match up?


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