YARN-2635. Merging to branch-2.6 for hadoop-2.6.0-rc1.
YARN-2635. Merging to branch-2.6 for hadoop-2.6.0-rc1.

MetSystem/hadoop,NightWolf007/hadoop,Ethanlm/hadoop,dxd132630/hadoop,ading1977/hadoop,abhishekagarwal87/hadoop,littlezhou/hadoop,szegedim/hadoop,adouang/hadoop,bysslord/hadoop,jth/hadoop,ChetnaChaudhari/hadoop,oza/hadoop,adouang/hadoop,apache/hadoop,neo-hu/hadoop,sujeetv/hadoop,skinzer/hadoop,allfro/hadoop,simbadzina/hadoop-fcfs,busbey/hadoop,dennishuo/hadoop,jth/hadoop,flyrain/hadoop,mapr/hadoop-common,cryptickp/hadoop,littlezhou/hadoop,likaiwalkman/hadoop,MobinRanjbar/hadoop,soumabrata-chakraborty/hadoop,vlajos/hadoop,slchen2014/hadoop,malli3131/hadoop-1,faspl/hadoop,hastimal/hadoop,khiraiwa/hadoop,EdwinChanYi/hadoop,1tylermitchell/hadoop,lukmajercak/hadoop,lawrencewu/hadoop,hash-X/hadoop,pritishppai/hadoop,WIgor/hadoop,flyrain/hadoop,WIgor/hadoop,zengzhaozheng/hadoop,yanbit/hadoop,ouyangjie/hadoop,vlajos/hadoop,leftnoteasy/hadoop-1,neo-hu/hadoop,Elbehery/hadoop,StephanieMak/hadoop,sujeetv/hadoop,nandakumar131/hadoop,Ethanlm/hadoop,pkdevbox/hadoop,dierobotsdie/hadoop,zjshen/hadoop-YARN-2928-POC,JingchengDu/hadoop,liutizhong/hadoop,slchen2014/hadoop,simbadzina/hadoop-fcfs,lawrencewu/hadoop,MobinRanjbar/hadoop,lzo/hadoop,fullcontact/hadoop,bitmybytes/hadoop,ading1977/hadoop,f7753/hadoop,allfro/hadoop,LoQIStar/hadoop,qqming113/hadoop,legend-hua/hadoop,steveloughran/hadoop,EasonYi/hadoop,chenliang613/hadoop,dilaver/hadoop,dierobotsdie/hadoop,leftnoteasy/hadoop-1,apache/hadoop,zjshen/hadoop-YARN-2928-POC,yanbit/hadoop,fullcontact/hadoop,bysslord/hadoop,flyrain/hadoop,979969786/hadoop,gilv/hadoop,Winiex/hadoop,Elbehery/hadoop,Elbehery/hadoop,lukmajercak/hadoop,chetan-anand/hadoop,tianshouzhi/hadoop,nandakumar131/hadoop,LoQIStar/hadoop,samuelan/hadoop,dossett/hadoop,apurtell/hadoop,GeLiXin/hadoop,zengzhaozheng/hadoop,ucare-uchicago/hadoop,ctrezzo/hadoop,Ethanlm/hadoop,plusplusjiajia/hadoop,steveloughran/hadoop,tianshouzhi/hadoop,ctrezzo/hadoop,sroegner/hadoop,oza/hadoop,abhishekagarwal87/hadoop,tianshouzhi/hadoop,EasonYi/hadoop,IBYoung/hadoop,jingjidejuren/hadoop,pkit/hadoop,MetSystem/hadoop,MeiSheng/hadoop,NightWolf007/hadoop,zhe-thoughts/hadoop,neo-hu/hadoop,vlajos/hadoop,ChetnaChaudhari/hadoop,lightslife/hadoop,WIgor/hadoop,szegedim/hadoop,pritishppai/hadoop,soumabrata-chakraborty/hadoop,hjk41/hadoop,sasa233/hadoop,likaiwalkman/hadoop,apurtell/hadoop,Authorlove/hadoop,malli3131/hadoop-1,huafengw/hadoop,OnePaaS/hadoop,xuchenCN/hadoop,frdeso/hadoop,Ethanlm/hadoop,jjj117/hadoop,adouang/hadoop,IBYoung/hadoop,faspl/hadoop,taoguan/hadoop,piaoyu/hadoop,pkdevbox/hadoop,piaoyu/hadoop,dilaver/hadoop,cryptickp/hadoop,huafengw/hadoop,f7753/hadoop,neo-hu/hadoop,sasa233/hadoop,huafengw/hadoop,abhishekagarwal87/hadoop,Authorlove/hadoop,venkateshu/hadoop,LoQIStar/hadoop,vesense/hadoop,bysslord/hadoop,jjj117/hadoop,anjuncc/hadoop,venkateshu/hadoop,hash-X/hadoop,messi49/hadoop,venkateshu/hadoop,binn-yang/hadoop,ronny-macmaster/hadoop,dierobotsdie/hadoop,zhe-thoughts/hadoop,piaoyu/hadoop,dxd132630/hadoop,sujeetv/hadoop,Winiex/hadoop,hastimal/hadoop,IBYoung/hadoop,sujeetv/hadoop,GeLiXin/hadoop,dhootha/hadoop,grokcoder/hadoop,pkdevbox/hadoop,dennishuo/hadoop,vlajos/hadoop,likaiwalkman/hadoop,dxd132630/hadoop,lzo/hadoop,JingchengDu/hadoop,ChetnaChaudhari/hadoop,JingchengDu/hadoop,pkdevbox/hadoop,ading1977/hadoop,lawrencewu/hadoop,rohanwaghere/hadoop,MobinRanjbar/hadoop,mapr/hadoop-common,saydulk/hadoop,dhootha/hadoop,lightslife/hadoop,matrix-stone/hadoop,piaoyu/hadoop,vlajos/hadoop,apurtell/hadoop,zjshen/hadoop-YARN-2928-POC,messi49/hadoop,fullcontact/hadoop,bysslord/hadoop,frdeso/hadoop,zengzhaozheng/hadoop,bitmybytes/hadoop,adouang/hadoop,dilaver/hadoop,cryptickp/hadoop,ouyangjie/hadoop,zjshen/hadoop-YARN-2928-POC,jjj117/hadoop,chenliang613/hadoop,jingjidejuren/hadoop,piaoyu/hadoop,apurtell/hadoop,eonezhang/hadoop,wenxinhe/hadoop,StephanieMak/hadoop,sroegner/hadoop,soumabrata-chakraborty/hadoop,wenxinhe/hadoop,sasa233/hadoop,flyrain/hadoop,djalova/hadoop,xiao-chen/hadoop,pritishppai/hadoop,frdeso/hadoop,SwathiMystery/hadoop,lzo/hadoop,sujeetv/hadoop,littlezhou/hadoop,1tylermitchell/hadoop,pkdevbox/hadoop,ouyangjie/hadoop,xujianhai/hadoop,nandakumar131/hadoop,jingjidejuren/hadoop,bysslord/hadoop,dongjiaqiang/hadoop,dhootha/hadoop,qqming113/hadoop,steveloughran/hadoop,hjk41/hadoop,wwjiang007/hadoop,samuelan/hadoop,skinzer/hadoop,pkit/hadoop,tianshouzhi/hadoop,slchen2014/hadoop,lawrencewu/hadoop,ouyangjie/hadoop,malli3131/hadoop-1,EasonYi/hadoop,allfro/hadoop,grokcoder/hadoop,oza/hadoop,Ethanlm/hadoop,NightWolf007/hadoop,ronny-macmaster/hadoop,zhe-thoughts/hadoop,anjuncc/hadoop,cryptickp/hadoop,jjj117/hadoop,tianshouzhi/hadoop,MetSystem/hadoop,xiao-chen/hadoop,lightslife/hadoop,laxman-ch/hadoop,dierobotsdie/hadoop,JingchengDu/hadoop,LoQIStar/hadoop,leftnoteasy/hadoop-1,sasa233/hadoop,adouang/hadoop,nandakumar131/hadoop,WIgor/hadoop,lightslife/hadoop,liutizhong/hadoop,weipinghe/hadoop,korrelate/hadoop,Authorlove/hadoop,zjshen/hadoop-YARN-2928-POC,hastimal/hadoop,MeiSheng/hadoop,skinzer/hadoop,zjshen/hadoop-YARN-2928-POC,dierobotsdie/hadoop,steveloughran/hadoop,matrix-stone/hadoop,zhe-thoughts/hadoop,bitmybytes/hadoop,ronny-macmaster/hadoop,samuelan/hadoop,matrix-stone/hadoop,1tylermitchell/hadoop,GeLiXin/hadoop,khiraiwa/hadoop,neo-hu/hadoop,laxman-ch/hadoop,messi49/hadoop,gilv/hadoop,laxman-ch/hadoop,korrelate/hadoop,MobinRanjbar/hadoop,hjk41/hadoop,eonezhang/hadoop,weipinghe/hadoop,faspl/hadoop,legend-hua/hadoop,EdwinChanYi/hadoop,EasonYi/hadoop,GeLiXin/hadoop,dennishuo/hadoop,chenliang613/hadoop,JingchengDu/hadoop,samuelan/hadoop,simbadzina/hadoop-fcfs,chetan-anand/hadoop,apache/hadoop,taoguan/hadoop,ChetnaChaudhari/hadoop,abhishekagarwal87/hadoop,saydulk/hadoop,weipinghe/hadoop,hash-X/hadoop,gilv/hadoop,EdwinChanYi/hadoop,mapr/hadoop-common,xiao-chen/hadoop,jth/hadoop,gilv/hadoop,yanbit/hadoop,jingjidejuren/hadoop,neo-hu/hadoop,dhootha/hadoop,xujianhai/hadoop,busbey/hadoop,khiraiwa/hadoop,cryptickp/hadoop,tianshouzhi/hadoop,xujianhai/hadoop,samuelan/hadoop,odpi/hadoop,jjj117/hadoop,plusplusjiajia/hadoop,szegedim/hadoop,skinzer/hadoop,StephanieMak/hadoop,Winiex/hadoop,wwjiang007/hadoop,xiao-chen/hadoop,odpi/hadoop,simbadzina/hadoop-fcfs,hash-X/hadoop,ChetnaChaudhari/hadoop,dongjiaqiang/hadoop,szegedim/hadoop,ctrezzo/hadoop,grokcoder/hadoop,979969786/hadoop,dxd132630/hadoop,steveloughran/hadoop,yanbit/hadoop,EasonYi/hadoop,allfro/hadoop,laxman-ch/hadoop,jingjidejuren/hadoop,lukmajercak/hadoop,harshavmb/hadoop,lzo/hadoop,dennishuo/hadoop,dilaver/hadoop,frdeso/hadoop,ctrezzo/hadoop,dilaver/hadoop,JingchengDu/hadoop,taoguan/hadoop,lawrencewu/hadoop,xuchenCN/hadoop,szegedim/hadoop,f7753/hadoop,fullcontact/hadoop,dossett/hadoop,anjuncc/hadoop,allfro/hadoop,simbadzina/hadoop-fcfs,vesense/hadoop,zhe-thoughts/hadoop,chetan-anand/hadoop,chenliang613/hadoop,plusplusjiajia/hadoop,steveloughran/hadoop,dhootha/hadoop,eonezhang/hadoop,pritishppai/hadoop,MetSystem/hadoop,grokcoder/hadoop,zhe-thoughts/hadoop,samuelan/hadoop,cnfire/hadoop,WIgor/hadoop,sujeetv/hadoop,cnfire/hadoop,ronny-macmaster/hadoop,matrix-stone/hadoop,IBYoung/hadoop,ronny-macmaster/hadoop,rohanwaghere/hadoop,soumabrata-chakraborty/hadoop,yanbit/hadoop,bitmybytes/hadoop,steveloughran/hadoop,liutizhong/hadoop,f7753/hadoop,chenliang613/hadoop,ucare-uchicago/hadoop,legend-hua/hadoop,lawrencewu/hadoop,dongjiaqiang/hadoop,qqming113/hadoop,wwjiang007/hadoop,ChetnaChaudhari/hadoop,messi49/hadoop,nandakumar131/hadoop,gilv/hadoop,Winiex/hadoop,messi49/hadoop,oza/hadoop,zjshen/hadoop-YARN-2928-POC,nandakumar131/hadoop,chetan-anand/hadoop,979969786/hadoop,wwjiang007/hadoop,GeLiXin/hadoop,lightslife/hadoop,lzo/hadoop,ctrezzo/hadoop,ucare-uchicago/hadoop,laxman-ch/hadoop,matrix-stone/hadoop,weipinghe/hadoop,anjuncc/hadoop,hash-X/hadoop,NightWolf007/hadoop,matrix-stone/hadoop,korrelate/hadoop,leftnoteasy/hadoop-1,taoguan/hadoop,cryptickp/hadoop,dhootha/hadoop,mapr/hadoop-common,xuchenCN/hadoop,dhootha/hadoop,MetSystem/hadoop,faspl/hadoop,slchen2014/hadoop,hjk41/hadoop,adouang/hadoop,wenxinhe/hadoop,saydulk/hadoop,rohanwaghere/hadoop,pkdevbox/hadoop,jjj117/hadoop,xiao-chen/hadoop,bitmybytes/hadoop,fullcontact/hadoop,szegedim/hadoop,979969786/hadoop,sroegner/hadoop,wwjiang007/hadoop,Ethanlm/hadoop,xiao-chen/hadoop,SwathiMystery/hadoop,huafengw/hadoop,jth/hadoop,xujianhai/hadoop,LoQIStar/hadoop,Authorlove/hadoop,venkateshu/hadoop,flyrain/hadoop,ChetnaChaudhari/hadoop,rohanwaghere/hadoop,hash-X/hadoop,frdeso/hadoop,WIgor/hadoop,allfro/hadoop,MeiSheng/hadoop,ronny-macmaster/hadoop,xuchenCN/hadoop,pkit/hadoop,mapr/hadoop-common,adouang/hadoop,simbadzina/hadoop-fcfs,pkit/hadoop,xujianhai/hadoop,bitmybytes/hadoop,slchen2014/hadoop,sasa233/hadoop,vesense/hadoop,StephanieMak/hadoop,harshavmb/hadoop,hastimal/hadoop,1tylermitchell/hadoop,dxd132630/hadoop,taoguan/hadoop,korrelate/hadoop,sroegner/hadoop,f7753/hadoop,djalova/hadoop,huafengw/hadoop,malli3131/hadoop-1,likaiwalkman/hadoop,MobinRanjbar/hadoop,Authorlove/hadoop,jth/hadoop,nandakumar131/hadoop,wwjiang007/hadoop,pritishppai/hadoop,jingjidejuren/hadoop,wenxinhe/hadoop,binn-yang/hadoop,StephanieMak/hadoop,littlezhou/hadoop,WIgor/hadoop,anjuncc/hadoop,korrelate/hadoop,StephanieMak/hadoop,979969786/hadoop,NightWolf007/hadoop,laxman-ch/hadoop,anjuncc/hadoop,sujeetv/hadoop,harshavmb/hadoop,djalova/hadoop,NightWolf007/hadoop,pritishppai/hadoop,cnfire/hadoop,OnePaaS/hadoop,rohanwaghere/hadoop,EdwinChanYi/hadoop,djalova/hadoop,GeLiXin/hadoop,faspl/hadoop,StephanieMak/hadoop,jingjidejuren/hadoop,ronny-macmaster/hadoop,pkit/hadoop,chetan-anand/hadoop,chetan-anand/hadoop,ctrezzo/hadoop,odpi/hadoop,eonezhang/hadoop,apurtell/hadoop,hjk41/hadoop,ouyangjie/hadoop,MobinRanjbar/hadoop,eonezhang/hadoop,dilaver/hadoop,dierobotsdie/hadoop,rohanwaghere/hadoop,EasonYi/hadoop,xujianhai/hadoop,tianshouzhi/hadoop,soumabrata-chakraborty/hadoop,khiraiwa/hadoop,saydulk/hadoop,SwathiMystery/hadoop,wenxinhe/hadoop,legend-hua/hadoop,EasonYi/hadoop,sroegner/hadoop,legend-hua/hadoop,lzo/hadoop,pritishppai/hadoop,leftnoteasy/hadoop-1,khiraiwa/hadoop,MeiSheng/hadoop,liutizhong/hadoop,dongjiaqiang/hadoop,plusplusjiajia/hadoop,binn-yang/hadoop,dennishuo/hadoop,odpi/hadoop,pkdevbox/hadoop,hastimal/hadoop,MobinRanjbar/hadoop,dennishuo/hadoop,SwathiMystery/hadoop,cnfire/hadoop,pkit/hadoop,pkit/hadoop,OnePaaS/hadoop,qqming113/hadoop,fullcontact/hadoop,dxd132630/hadoop,apache/hadoop,MeiSheng/hadoop,SwathiMystery/hadoop,odpi/hadoop,khiraiwa/hadoop,sasa233/hadoop,OnePaaS/hadoop,lukmajercak/hadoop,odpi/hadoop,sroegner/hadoop,xiao-chen/hadoop,harshavmb/hadoop,qqming113/hadoop,soumabrata-chakraborty/hadoop,f7753/hadoop,MeiSheng/hadoop,busbey/hadoop,sroegner/hadoop,dxd132630/hadoop,lukmajercak/hadoop,legend-hua/hadoop,leftnoteasy/hadoop-1,vlajos/hadoop,liutizhong/hadoop,flyrain/hadoop,OnePaaS/hadoop,ading1977/hadoop,plusplusjiajia/hadoop,liutizhong/hadoop,Authorlove/hadoop,SwathiMystery/hadoop,gilv/hadoop,grokcoder/hadoop,grokcoder/hadoop,ctrezzo/hadoop,ucare-uchicago/hadoop,messi49/hadoop,zengzhaozheng/hadoop,f7753/hadoop,hjk41/hadoop,xujianhai/hadoop,faspl/hadoop,EdwinChanYi/hadoop,grokcoder/hadoop,skinzer/hadoop,bitmybytes/hadoop,lightslife/hadoop,ouyangjie/hadoop,Winiex/hadoop,samuelan/hadoop,apache/hadoop,oza/hadoop,mapr/hadoop-common,Elbehery/hadoop,laxman-ch/hadoop,Ethanlm/hadoop,szegedim/hadoop,saydulk/hadoop,dossett/hadoop,huafengw/hadoop,malli3131/hadoop-1,xuchenCN/hadoop,1tylermitchell/hadoop,sasa233/hadoop,cnfire/hadoop,dossett/hadoop,zengzhaozheng/hadoop,abhishekagarwal87/hadoop,dongjiaqiang/hadoop,JingchengDu/hadoop,IBYoung/hadoop,simbadzina/hadoop-fcfs,jth/hadoop,chenliang613/hadoop,MetSystem/hadoop,eonezhang/hadoop,apurtell/hadoop,chenliang613/hadoop,wwjiang007/hadoop,oza/hadoop,apache/hadoop,flyrain/hadoop,binn-yang/hadoop,Winiex/hadoop,1tylermitchell/hadoop,yanbit/hadoop,apache/hadoop,liutizhong/hadoop,binn-yang/hadoop,soumabrata-chakraborty/hadoop,gilv/hadoop,malli3131/hadoop-1,djalova/hadoop,binn-yang/hadoop,abhishekagarwal87/hadoop,korrelate/hadoop,ucare-uchicago/hadoop,zengzhaozheng/hadoop,binn-yang/hadoop,EdwinChanYi/hadoop,dossett/hadoop,lzo/hadoop,plusplusjiajia/hadoop,skinzer/hadoop,GeLiXin/hadoop,cryptickp/hadoop,IBYoung/hadoop,EdwinChanYi/hadoop,dilaver/hadoop,dongjiaqiang/hadoop,dossett/hadoop,likaiwalkman/hadoop,Authorlove/hadoop,saydulk/hadoop,vesense/hadoop,OnePaaS/hadoop,piaoyu/hadoop,venkateshu/hadoop,oza/hadoop,cnfire/hadoop,cnfire/hadoop,dierobotsdie/hadoop,jth/hadoop,jth/hadoop,ading1977/hadoop,djalova/hadoop,busbey/hadoop,venkateshu/hadoop,wenxinhe/hadoop,harshavmb/hadoop,skinzer/hadoop,vesense/hadoop,qqming113/hadoop,SwathiMystery/hadoop,hjk41/hadoop,MeiSheng/hadoop,legend-hua/hadoop,eonezhang/hadoop,bysslord/hadoop,busbey/hadoop,hastimal/hadoop,saydulk/hadoop,ading1977/hadoop,979969786/hadoop,harshavmb/hadoop,neo-hu/hadoop,weipinghe/hadoop,LoQIStar/hadoop,piaoyu/hadoop,taoguan/hadoop,1tylermitchell/hadoop,harshavmb/hadoop,mapr/hadoop-common,busbey/hadoop,likaiwalkman/hadoop,OnePaaS/hadoop,frdeso/hadoop,979969786/hadoop,littlezhou/hadoop,zhe-thoughts/hadoop,korrelate/hadoop,messi49/hadoop,littlezhou/hadoop,ading1977/hadoop,NightWolf007/hadoop,dossett/hadoop,djalova/hadoop,Elbehery/hadoop,slchen2014/hadoop,korrelate/hadoop,allfro/hadoop,taoguan/hadoop,xuchenCN/hadoop,slchen2014/hadoop,matrix-stone/hadoop,faspl/hadoop,messi49/hadoop,plusplusjiajia/hadoop,vlajos/hadoop,abhishekagarwal87/hadoop,yanbit/hadoop,malli3131/hadoop-1,likaiwalkman/hadoop,ucare-uchicago/hadoop,ucare-uchicago/hadoop,lukmajercak/hadoop,MetSystem/hadoop,IBYoung/hadoop,Elbehery/hadoop,odpi/hadoop,jjj117/hadoop,weipinghe/hadoop,littlezhou/hadoop,frdeso/hadoop,lukmajercak/hadoop,hastimal/hadoop,weipinghe/hadoop,busbey/hadoop,huafengw/hadoop,leftnoteasy/hadoop-1,vesense/hadoop,hash-X/hadoop,khiraiwa/hadoop,LoQIStar/hadoop,venkateshu/hadoop,fullcontact/hadoop,busbey/hadoop,anjuncc/hadoop,vesense/hadoop,wenxinhe/hadoop,lightslife/hadoop,chetan-anand/hadoop,xuchenCN/hadoop,bysslord/hadoop,Winiex/hadoop,ouyangjie/hadoop,qqming113/hadoop,rohanwaghere/hadoop,dennishuo/hadoop,apurtell/hadoop,Elbehery/hadoop,zengzhaozheng/hadoop,bysslord/hadoop,simbadzina/hadoop-fcfs,dongjiaqiang/hadoop,lawrencewu/hadoop