Merge pull request #269 from youyong205/biz

Biz
retry it on top analyzer
remove unused testcase
Merge branch 'biz' of github.com:dianping/cat
Merge branch 'master' of github.com:dianping/cat
fix bug
modify the codec
modify the plaintext codec
fix the small cat problem
Merge branch 'master' of github.com:dianping/cat
modify the warning
Merge pull request #284 from youyong205/master

merge from monitor page