Hi Louis,
Arrow FlightRPC supports UCX transport, which supports IPC over shared
memory. Please note UCX support is still experimental, with few
documents now.
Yibo
On 7/19/22 16:51, Louis C wrote:
Hello,
For IPC purposes, I was interested in "shared memory" to pass data
between processes. The idea would be to create a named shared memory
zone (not backed by any file), and write Arrow data in it, then read
back this data in another process. On linux this would probably
correspond to something like calling "shm_open" and then mmap this
region, before writing Arrow data in it.
Looking at the docs and the code of Arrow, I think that it is not
possible using only Arrow. The only class that comes close to what I
would like is "MemoryMappedFile" which is an input/output class to a
real file on disk (but mapped in memory at the openning).
Is this correct ? Is there any plan in the future to directly support
this feature ?
Best regards,
Louis C.
