qiuyang163 commented on issue #13787:
URL: https://github.com/apache/arrow/issues/13787#issuecomment-1204873445

   > > Does pyarrow support communication inter-process(IPC) without mapping a 
file?Just like multiprocessing. sharedctypes only use sharing memory to do it.
   > 
   > sharedctypes uses mmap over `/dev/shm`... See 
https://github.com/python/cpython/blob/f79547a429d5c90af83a0da821e082cba20d4712/Lib/multiprocessing/heap.py#L67-L75
   
   Oh,I understand, you mean I can use code below to finish it
   ```
   path = os.path.join('/dev/shm')
   mmap = pa.create_memory_map(path, 5000000 * 1000)
   ```
   


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