Comments (2)
the IPC shuffle data file structure now becomes:
ipc length 1 (u64)
ipc length uncompressed 1 (u64)
ipc content 1 (compressed)
...
ipc content N (compressed)
also we turn arrow file format into stream format (https://arrow.apache.org/docs/python/ipc.html) which does not require a seekable reader. now we can implement shuffle reading with a simple InputStream
and does not need to buffer anything in memory.
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done
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