[Yum] Is there any plan to parallel download packages by yum?

[dancefire]

Hi, everyone,

I feel it's slow when I try to download packages by yum. 

The problem is that yum try to download every packages in queue, only
one thread for the download queue, even though yum already figure out
all packages links.

If there are a few slow site spread in the middle of the download queue,
most other big tasks have to wait for them. So the overall bandwidth
usage is very low.

Usually, there are 2 solutions for this kind of problems. 

1. Use multi-thread download task manager. There is a thread pool, and
one thread for one package download task. So, no task can slow down the
others.

2. Use multi-thread download program, such as prozilla, to increase the
speed of single package downloading.

So, is there any plan/way of yum that can implement such solution. If
not, I think it's good idea and should be consider to implement both, or
at least the first one.

Regards,

Dancefire