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[jira] [Created] (ARROW-4024) [Python] Cython compilation error on cython==0.27.3


Philipp Moritz created ARROW-4024:
-------------------------------------

             Summary: [Python] Cython compilation error on cython==0.27.3
                 Key: ARROW-4024
                 URL: https://issues.apache.org/jira/browse/ARROW-4024
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Philipp Moritz


On the latest master, I'm getting the following error:
{code:java}
[ 11%] Compiling Cython CXX source for lib...



Error compiling Cython file:

------------------------------------------------------------

...



    out.init(type)

    return out





cdef object pyarrow_wrap_metadata(

    ^

------------------------------------------------------------



pyarrow/public-api.pxi:95:5: Function signature does not match previous declaration

CMakeFiles/lib_pyx.dir/build.make:57: recipe for target 'CMakeFiles/lib_pyx' failed{code}
With 0.29.0 it is working. This might have been introduced in [https://github.com/apache/arrow/commit/12201841212967c78e31b2d2840b55b1707c4e7b] but I'm not sure.



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