Steps to reproduce from a fresh clone of Arrow:
cmake .. -DARROW_PLASMA=on
make -j8 unittest
client_tests may then fail due to the store executable not being created. The first time I reproduced the issue the test did fail, but the test passed on subsequent reproductions of this issue. Regardless, if you look in cpp/debug/debug, there is no plasma store executable. If you then call make, the store executable is generated in that directory.