[arrow] branch master updated: ARROW-4692: [Flight] Explain sidecar in a bit more detail

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The following commit(s) were added to refs/heads/master by this push:
     new 07e6f5a  ARROW-4692: [Flight] Explain sidecar in a bit more detail
07e6f5a is described below

commit 07e6f5ab6c67933f571ae7038abe6edfd498a1eb
Author: Micah Kornfield <em...@gmail.com>
AuthorDate: Thu Feb 28 17:28:28 2019 +0100

    ARROW-4692: [Flight] Explain sidecar in a bit more detail
    
    Author: Micah Kornfield <em...@gmail.com>
    Author: emkornfield <em...@gmail.com>
    
    Closes #3767 from emkornfield/flight_doc and squashes the following commits:
    
    98d97f78a <emkornfield> address review feedback
    441a963d2 <Micah Kornfield> ARROW-4692: Explain sidecar in a bit more detail
---
 format/Flight.proto | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/format/Flight.proto b/format/Flight.proto
index 3a6ae80..0131dac 100644
--- a/format/Flight.proto
+++ b/format/Flight.proto
@@ -288,7 +288,9 @@ message FlightData {
 
   /*
    * The actual batch of Arrow data. Preferably handled with minimal-copies
-   * coming last in the definition to help with sidecar patterns.
+   * coming last in the definition to help with sidecar patterns (it is
+   * expected that some implementations will fetch this field off the wire
+   * with specialized code to avoid extra memory copies).
    */
   bytes data_body = 1000;
 }