Thanks for your quick replies, I have checked from yesterday. But 
yum clean all and yum install @development-tools --disable-repo=chromium still give errors. 

(chromium.repo was created by myself. not in default repo)

Thanks


On Thu, Apr 12, 2012 at 6:21 AM, Pierre-Yves Chibon <pingou@pingoured.fr> wrote:
On Thu, 2012-04-12 at 00:09 -0400, Srineth Priyanka wrote:
> Hello,
> I have tried to create RMP packages, So I tried to create development
> environment. When trying to set up, gives error, After  I have
> disabled chromium( yum repolist disabled chromium )  and tried again.
> Again give some error. How can I solve that.
>
>
> [root@localhost charindu]# yum install @development-tools
> Loaded plugins: langpacks, presto, refresh-packagekit
> http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml: [Errno
> 14] HTTP Error 404 - Not Found :
> http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml
> Trying other mirror.
> google-chrome                                            |  951 B
> 00:00
> updates/metalink                                         | 6.0 kB
> 00:00
> updates                                                  | 4.5 kB
> 00:00
> http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml: [Errno
> 14] HTTP Error 404 - Not Found :
> http://spot.fedorapeople.org/chromium/F16/repodata/repomd.xml
> Trying other mirror.
> Error: Cannot retrieve repository metadata (repomd.xml) for
> repository: chromium. Please verify its path and try again

The answer was given to you yesterday:
http://lists.fedoraproject.org/pipermail/packaging/2012-April/008271.html

Pierre