assignUser commented on issue #43929:
URL: https://github.com/apache/arrow/issues/43929#issuecomment-2325425053
Hey, thanks for the report.
No idea what causes the issue but have a question about what you are looking
to achieve.
I assume you are not just writing to disk but rather using this to do IPC?
(based on `prefix_stream`) In that case why are you not using the existing
API: https://arrow.apache.org/docs/python/ipc.html#using-streams ?
If you just want to write to disk and keep the file memory mapped it's
likely easier (and faster) to just write an arrow file to disk and mmap it
after.
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