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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/03/24 12:26:00 UTC
[jira] [Resolved] (ARROW-12065) [C++][Python] Segfault reading JSON
file
[ https://issues.apache.org/jira/browse/ARROW-12065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Antoine Pitrou resolved ARROW-12065.
------------------------------------
Resolution: Fixed
Issue resolved by pull request 9783
[https://github.com/apache/arrow/pull/9783]
> [C++][Python] Segfault reading JSON file
> ----------------------------------------
>
> Key: ARROW-12065
> URL: https://issues.apache.org/jira/browse/ARROW-12065
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Affects Versions: 3.0.0
> Environment: arch linux, 31G ram
> Reporter: Patrick
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Attachments: image-2021-03-23-15-43-29-139.png, segfault.sh, test.tgz
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> I noticed this when doing some analysis on a not very complex, but reasonably large json file and I've simplified it to a fairly minimal reproduction:
> ```
> import pyarrow.json
> pyarrow.json.read_json('test.json')
> ```
> and `test.json` is
> ```
> {"A":"<0 repeated 1.6 million times>"}
> {"B":[]}
> ```
> this seems like it shouldn't be too large to load into memory all-at-once, so I'm surprised there is a segfault
> running via gdb and getting a backtrace gives
> ```
> (gdb) bt
> #0 0x00007ffff5c1965d in std::__shared_ptr<arrow::Buffer, (__gnu_cxx::_Lock_policy)2>::__shared_ptr(std::__shared_ptr<arrow::Buffer, (__gnu_cxx::_Lock_policy)2> const&) () from /home/patrick/.local/lib/python3.9/site-packages/pyarrow/libarrow.so.300
> #1 0x00007ffff5ca8d9e in arrow::json::ChunkedListArrayBuilder::Insert(long, std::shared_ptr<arrow::Field> const&, std::shared_ptr<arrow::Array> const&) () from /home/patrick/.local/lib/python3.9/site-packages/pyarrow/libarrow.so.300
> #2 0x00007ffff5cabcc8 in arrow::json::ChunkedStructArrayBuilder::Finish(std::shared_ptr<arrow::ChunkedArray>*) () from /home/patrick/.local/lib/python3.9/site-packages/pyarrow/libarrow.so.300
> #3 0x00007ffff5c1fc16 in arrow::json::TableReaderImpl::Read() () from /home/patrick/.local/lib/python3.9/site-packages/pyarrow/libarrow.so.300
> #4 0x00007fffcf73da69 in __pyx_pw_7pyarrow_5_json_1read_json(_object*, _object*, _object*) () from /home/patrick/.local/lib/python3.9/site-packages/pyarrow/_json.cpython-39-x86_64-linux-gnu.so
> #5 0x00007ffff7d35a43 in ?? () from /usr/lib/libpython3.9.so.1.0
> #6 0x00007ffff7d1be6d in _PyObject_MakeTpCall () from /usr/lib/libpython3.9.so.1.0
> #7 0x00007ffff7d17b3a in _PyEval_EvalFrameDefault () from /usr/lib/libpython3.9.so.1.0
> #8 0x00007ffff7d119ad in ?? () from /usr/lib/libpython3.9.so.1.0
> #9 0x00007ffff7d11371 in _PyEval_EvalCodeWithName () from /usr/lib/libpython3.9.so.1.0
> #10 0x00007ffff7dd3f83 in PyEval_EvalCode () from /usr/lib/libpython3.9.so.1.0
> #11 0x00007ffff7de43dd in ?? () from /usr/lib/libpython3.9.so.1.0
> #12 0x00007ffff7ddfc7b in ?? () from /usr/lib/libpython3.9.so.1.0
> #13 0x00007ffff7cf38ab in ?? () from /usr/lib/libpython3.9.so.1.0
> #14 0x00007ffff7cf3a63 in PyRun_InteractiveLoopFlags () from /usr/lib/libpython3.9.so.1.0
> #15 0x00007ffff7c81f6b in PyRun_AnyFileExFlags () from /usr/lib/libpython3.9.so.1.0
> #16 0x00007ffff7c7665c in ?? () from /usr/lib/libpython3.9.so.1.0
> #17 0x00007ffff7dc6fa9 in Py_BytesMain () from /usr/lib/libpython3.9.so.1.0
> #18 0x00007ffff7a43b25 in __libc_start_main () from /usr/lib/libc.so.6
> #19 0x000055555555504e in _start ()
> (gdb)
> ```
>
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