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  1. Apache Arrow
  2. ARROW-3346

[Python] Segfault when reading parquet files if torch is imported before pyarrow

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.10.0
    • Fix Version/s: None
    • Component/s: Python
    • Labels:
      None

      Description

      pyarrow (version 0.10.0) appears to crash sporadically with a segmentation fault when reading parquet files if it is used in a program where torch is imported first.

      A self-contained example is available here: https://gitlab.com/ostrokach/pyarrow_pytorch_segfault.

      Basically, running

      python -X faulthandler -c "import torch; import pyarrow.parquet as pq; _ = pq.ParquetFile('example.parquet').read_row_group(0)"

      sooner or later results in a segfault:

      Fatal Python error: Segmentation fault

      Current thread 0x00007f52959bb740 (most recent call first):

      File "/home/kimlab1/strokach/anaconda/lib/python3.6/site-packages/pyarrow/parquet.py", line 125 in read_row_group
      File "<string>", line 1 in <module>
      ./test_fail.sh: line 5: 42612 Segmentation fault (core dumped) python -X faulthandler -c "import torch; import pyarrow.parquet as pq; _ = pq.ParquetFile('example.parquet').read_row_group(0)"

      The number of iterations before a segfault varies, but it usually happens within the first several calls.

      Running

      python -X faulthandler -c "import pyarrow.parquet as pq import torch; _ = pq.ParquetFile('example.parquet').read_row_group(0)"

      works without a problem.

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            • Assignee:
              Unassigned
              Reporter:
              ostrokach Alexey Strokach
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                Updated:
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