zero size buf in output !!

[Maxim Dounin]

Hello!

On Wed, Aug 27, 2014 at 08:48:19PM +0500, shahzaib shahzaib wrote:

> We're facing following error on edge server with nginx-1.6.1, using
> proxy_store on edge.
> 
> 2014/08/27 20:35:05 [alert] 5701#0: *21244 zero size buf in output t:0 r:0
> f:0 0000000002579840 0000000002579840-000000000257A840 0000000000000000 0-0
> while sending to client, client: 119.160.118.123, server:
> storage4.content.com, request: "GET
> /files/videos/2013/06/30/137256108550d07-m.mp4 HTTP/1.1", upstream: "
> http://82.2.37.87:80/files/videos/2013/06/30/137256108550d07-m.mp4", host: "
> storage4.content.com"
> 2014/08/27 20:35:28 [alert] 5687#0: *26261 zero size buf in output t:0 r:0
> f:0 0000000004F5F2D0 0000000004F5F2D0-0000000004F602D0 0000000000000000 0-0
> while sending to client, client: 121.52.147.68, server: storage9.content.com,
> request: "GET /files/videos/2014/04/21/1398060531bb2e3-360.mp4 HTTP/1.1",
> upstream: "
> http://9.7.248.180:80/files/videos/2014/04/21/1398060531bb2e3-360.mp4",
> host: "storage9.content.com", referrer: "
> http://files.com/video/2618018/aashiqui-3-new-songs"
> 
> nginx version: nginx/1.6.1
> built by gcc 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC)
> configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx
> --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log
> --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid
> --lock-path=/var/run/nginx.lock
> --http-client-body-temp-path=/var/cache/nginx/client_temp
> --http-proxy-temp-path=/var/cache/nginx/proxy_temp --user=nginx
> --group=nginx --with-http_flv_module --with-http_mp4_module

You may want to try 1.7.4 to see if it helps (there are some 
potentially related changes in nginx 1.7.3).

If it doesn't, providing debug log may be helpful.  See 
http://wiki.nginx.org/Debugging for more hints.

-- 
Maxim Dounin
http://nginx.org/