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From Andrew Brust <>
Subject RE: Question about mutability
Date Wed, 24 Feb 2016 19:17:09 GMT
Hmm...that's not exactly how Jaques described things to me when he briefed me on Arrow ahead
of the announcement.

-----Original Message-----
From: Zhe Zhang [] 
Sent: Wednesday, February 24, 2016 2:08 PM
Subject: Re: Question about mutability

I don't think one application/process's memory space will be made available to other applications/processes.
It's fundamentally hard for processes to share their address spaces.

IIUC, with Arrow, when application A shares data with application B, the data is still duplicated
in the memory spaces of A and B. It's just that data serialization/deserialization are much
faster with Arrow (compared with Protobuf).

On Wed, Feb 24, 2016 at 10:40 AM Corey Nolet <> wrote:

> Forgive me if this question seems ill-informed. I just started looking 
> at Arrow yesterday. I looked around the github a tad.
> Are you expecting the memory space held by one application to be 
> mutable by that application and made available to all applications 
> trying to read the memory space?
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