Fix exception when checkpoint path does not exist (no data in rdd which is being checkpointed for example)
Fix exception when checkpoint path does not exist (no data in rdd which is being checkpointed for example)

srowen/spark,actuaryzhang/spark,bravo-zhang/spark,aosagie/spark,aray/spark,byakuinss/spark,JerryLead/spark,jiangxb1987/spark,bOOm-X/spark,esi-mineset/spark,jrshust/spark,adrian-ionescu/apache-spark,1haodian/spark,hhbyyh/spark,LantaoJin/spark,publicRoman/spark,taroplus/spark,vax11780/spark,apache-spark-on-k8s/spark,jkbradley/spark,tengpeng/spark,jianran/spark,sahilTakiar/spark,loneknightpy/spark,alunarbeach/spark,skonto/spark,rezasafi/spark,shuangshuangwang/spark,kimoonkim/spark,cloud-fan/spark,narahari92/spark,rekhajoshm/spark,vax11780/spark,minixalpha/spark,goldmedal/spark,alunarbeach/spark,aray/spark,lvdongr/spark,shubhamchopra/spark,zhouyejoe/spark,mkolod/incubator-spark,rezasafi/spark,kevinyu98/spark,byakuinss/spark,bOOm-X/spark,sureshthalamati/spark,pgandhi999/spark,jiangxb1987/spark,ConeyLiu/spark,zero323/spark,BryanCutler/spark,akopich/spark,ron8hu/spark,maropu/spark,icexelloss/spark,WeichenXu123/spark,saturday-shi/spark,taroplus/spark,gengliangwang/spark,1haodian/spark,metamx/spark,goldmedal/spark,janewangfb/spark,holdenk/spark,JoshRosen/spark,dbtsai/spark,andrewor14/spark,maropu/spark,icexelloss/spark,gioenn/xSpark,adrian-ionescu/apache-spark,akopich/spark,big-pegasus/spark,highfei2011/spark,apache/spark,mike0sv/spark,joseph-torres/spark,sryza/spark,narahari92/spark,wgpshashank/spark,adrian-ionescu/apache-spark,techaddict/spark,sahilTakiar/spark,skonto/spark,WeichenXu123/spark,tejasapatil/spark,holdenk/spark,BryanCutler/spark,cin/spark,guoxiaolongzte/spark,panfengfeng/spark,poffuomo/spark,aosagie/spark,adrian-ionescu/apache-spark,rednaxelafx/apache-spark,actuaryzhang/spark,facaiy/spark,dotunolafunmiloye/spark,zhouyejoe/spark,szhem/spark,huang1900/spark,tejasapatil/spark,holdenk/spark,lxsmnv/spark,markhamstra/spark,yanboliang/spark,highfei2011/spark,rekhajoshm/spark,jlopezmalla/spark,wangmiao1981/spark,ddna1021/spark,andrewor14/iolap,kiszk/spark,sryza/spark,milliman/spark,cloud-fan/spark,wgpshashank/spark,kissmetrics/spark,rekhajoshm/spark,chuckchen/spark,xflin/spark,brad-kaiser/spark,chuckchen/spark,hvanhovell/spark,zuotingbing/spark,alunarbeach/spark,setjet/spark,sureshthalamati/spark,saltstar/spark,pgandhi999/spark,andrewor14/iolap,mike0sv/spark,tejasapatil/spark,rjpower/spark,jrshust/spark,alunarbeach/spark,wangyum/spark,jiangxb1987/spark,patrick-nicholson/spark,liyichao/spark,skonto/spark,andrewor14/spark,big-pegasus/spark,cloudera/spark,aray/spark,saturday-shi/spark,saturday-shi/spark,saltstar/spark,dbtsai/spark,wangyum/spark,bdrillard/spark,ajaysaini725/spark,shuangshuangwang/spark,SHASHANKB/spark,publicRoman/spark,michalsenkyr/spark,Panos-Bletsos/spark-cost-model-optimizer,ueshin/apache-spark,chuckchen/spark,jiangxb1987/spark,bdrillard/spark,jrshust/spark,1haodian/spark,jlopezmalla/spark,gengliangwang/spark,pronix/spark,liutang123/spark,mkolod/incubator-spark,UndeadBaneGitHub/spark,WeichenXu123/spark,cloud-fan/spark,ConeyLiu/spark,tengpeng/spark,esi-mineset/spark,rekhajoshm/spark,ahnqirage/spark,liutang123/spark,joseph-torres/spark,maropu/spark,tejasapatil/spark,sachintyagi22/spark,nilsgrabbert/spark,ericvandenbergfb/spark,kiszk/spark,MLnick/spark,rekhajoshm/spark,eyalfa/spark,ajaysaini725/spark,techaddict/spark,mike0sv/spark,aokolnychyi/spark,ueshin/apache-spark,ron8hu/spark,darionyaphet/spark,dhruve/spark,brad-kaiser/spark,nilsgrabbert/spark,markhamstra/spark,MLnick/spark,icexelloss/spark,panfengfeng/spark,zhouyejoe/spark,jiangxb1987/spark,cin/spark,MLnick/spark,jkbradley/spark,pronix/spark,huang1900/spark,janewangfb/spark,caneGuy/spark,kissmetrics/spark,esi-mineset/spark,patrick-nicholson/spark,andrewor14/iolap,pgandhi999/spark,stanzhai/spark,ioana-delaney/spark,joseph-torres/spark,ibm-research-ireland/sparkoscope,map222/spark,jlopezmalla/spark,kissmetrics/spark,HyukjinKwon/spark,brad-kaiser/spark,actuaryzhang/spark,chuckchen/spark,lyogavin/spark,mzl9039/spark,ddna1021/spark,witgo/spark,aray/spark,adrian-ionescu/apache-spark,witgo/spark,ptkool/spark,metamx/spark,jianran/spark,witgo/spark,mahak/spark,wgpshashank/spark,zhouyejoe/spark,rezasafi/spark,nlalevee/spark,minixalpha/spark,Panos-Bletsos/spark-cost-model-optimizer,adrian-ionescu/apache-spark,techaddict/spark,shubhamchopra/spark,jlopezmalla/spark,apache-spark-on-k8s/spark,zuotingbing/spark,liyichao/spark,JerryLead/spark,andrewor14/iolap,1haodian/spark,wangmiao1981/spark,ConeyLiu/spark,srowen/spark,aokolnychyi/spark,highfei2011/spark,HyukjinKwon/spark,gioenn/xSpark,actuaryzhang/spark,lyogavin/spark,byakuinss/spark,publicRoman/spark,facaiy/spark,aosagie/spark,rezasafi/spark,alunarbeach/spark,cloud-fan/spark,eyalfa/spark,debugger87/spark,mzl9039/spark,esi-mineset/spark,zzcclp/spark,poffuomo/spark,wangyum/spark,shaneknapp/spark,publicRoman/spark,zero323/spark,SHASHANKB/spark,minixalpha/spark,techaddict/spark,lxsmnv/spark,someorz/spark,goldmedal/spark,dongjoon-hyun/spark,JerryLead/spark,vax11780/spark,darionyaphet/spark,jrshust/spark,SnappyDataInc/spark,taroplus/spark,lvdongr/spark,MLnick/spark,cin/spark,BryanCutler/spark,mdespriee/spark,panfengfeng/spark,zuotingbing/spark,mdespriee/spark,rikima/spark,metamx/spark,panfengfeng/spark,saltstar/spark,dongjoon-hyun/spark,ericvandenbergfb/spark,ibm-research-ireland/sparkoscope,ueshin/apache-spark,aosagie/spark,tengpeng/spark,metamx/spark,vinodkc/spark,akopich/spark,hvanhovell/spark,vax11780/spark,goldmedal/spark,stanzhai/spark,kissmetrics/spark,patrick-nicholson/spark,actuaryzhang/spark,jlopezmalla/spark,kissmetrics/spark,UndeadBaneGitHub/spark,eyalfa/spark,LantaoJin/spark,bdrillard/spark,bravo-zhang/spark,michalsenkyr/spark,sahilTakiar/spark,WeichenXu123/spark,adrian-ionescu/apache-spark,rekhajoshm/spark,michalsenkyr/spark,hvanhovell/spark,yanboliang/spark,pronix/spark,cloud-fan/spark,hhbyyh/spark,rjpower/spark,janewangfb/spark,UndeadBaneGitHub/spark,cloud-fan/spark,aray/spark,Panos-Bletsos/spark-cost-model-optimizer,apache-spark-on-k8s/spark,rikima/spark,wgpshashank/spark,facaiy/spark,poffuomo/spark,UndeadBaneGitHub/spark,rikima/spark,patrick-nicholson/spark,ioana-delaney/spark,lvdongr/spark,someorz/spark,caneGuy/spark,spark-test/spark,yanboliang/spark,jiangxb1987/spark,srowen/spark,narahari92/spark,highfei2011/spark,kevinyu98/spark,shubhamchopra/spark,dongjoon-hyun/spark,eyalfa/spark,HyukjinKwon/spark,sachintyagi22/spark,JerryLead/spark,liyichao/spark,xflin/spark,kimoonkim/spark,Aegeaner/spark,bravo-zhang/spark,WindCanDie/spark,skonto/spark,janewangfb/spark,dbtsai/spark,haowu80s/spark,icexelloss/spark,JoshRosen/spark,xuanyuanking/spark,tengpeng/spark,nchammas/spark,map222/spark,facaiy/spark,WindCanDie/spark,pgandhi999/spark,ueshin/apache-spark,mahak/spark,srowen/spark,gengliangwang/spark,dhruve/spark,cloudera/spark,JerryLead/spark,zero323/spark,spark-test/spark,SHASHANKB/spark,sachintyagi22/spark,mike0sv/spark,setjet/spark,hvanhovell/spark,SnappyDataInc/spark,mahak/spark,shaneknapp/spark,sachintyagi22/spark,andrewor14/iolap,lyogavin/spark,aray/spark,ptkool/spark,ibm-research-ireland/sparkoscope,rikima/spark,panfengfeng/spark,zzcclp/spark,tengpeng/spark,kevinyu98/spark,nlalevee/spark,andrewor14/spark,kimoonkim/spark,taroplus/spark,nlalevee/spark,jianran/spark,map222/spark,someorz/spark,zhouyejoe/spark,tengpeng/spark,ajaysaini725/spark,esi-mineset/spark,debugger87/spark,ddna1021/spark,BryanCutler/spark,WindCanDie/spark,spark-test/spark,ddna1021/spark,sachintyagi22/spark,andrewor14/spark,dongjoon-hyun/spark,mdespriee/spark,akopich/spark,huang1900/spark,szhem/spark,szhem/spark,guoxiaolongzte/spark,liyichao/spark,dhruve/spark,ptkool/spark,kimoonkim/spark,mkolod/incubator-spark,witgo/spark,cin/spark,kiszk/spark,markhamstra/spark,liutang123/spark,hhbyyh/spark,ron8hu/spark,ibm-research-ireland/sparkoscope,loneknightpy/spark,wzhfy/spark,chuckchen/spark,JoshRosen/spark,narahari92/spark,ahnqirage/spark,nilsgrabbert/spark,jrshust/spark,apache/spark,chuckchen/spark,stanzhai/spark,brad-kaiser/spark,spark-test/spark,zzcclp/spark,pgandhi999/spark,LantaoJin/spark,Panos-Bletsos/spark-cost-model-optimizer,ahnqirage/spark,rezasafi/spark,sryza/spark,lvdongr/spark,mzl9039/spark,zero323/spark,maropu/spark,facaiy/spark,markhamstra/spark,rjpower/spark,milliman/spark,UndeadBaneGitHub/spark,xuanyuanking/spark,metamx/spark,bravo-zhang/spark,ConeyLiu/spark,patrick-nicholson/spark,saltstar/spark,sahilTakiar/spark,techaddict/spark,aokolnychyi/spark,markhamstra/spark,someorz/spark,apache/spark,minixalpha/spark,cin/spark,panfengfeng/spark,loneknightpy/spark,mzl9039/spark,gengliangwang/spark,mahak/spark,nchammas/spark,yanboliang/spark,chuckchen/spark,kiszk/spark,zuotingbing/spark,eyalfa/spark,kevinyu98/spark,caneGuy/spark,xuanyuanking/spark,minixalpha/spark,rezasafi/spark,facaiy/spark,kiszk/spark,kissmetrics/spark,lxsmnv/spark,wzhfy/spark,liyichao/spark,shuangshuangwang/spark,Aegeaner/spark,ioana-delaney/spark,wzhfy/spark,xflin/spark,ron8hu/spark,byakuinss/spark,joseph-torres/spark,zero323/spark,1haodian/spark,1haodian/spark,patrick-nicholson/spark,haowu80s/spark,haowu80s/spark,shaneknapp/spark,UndeadBaneGitHub/spark,Aegeaner/spark,aosagie/spark,markhamstra/spark,LantaoJin/spark,kissmetrics/spark,nlalevee/spark,minixalpha/spark,cloudera/spark,poffuomo/spark,wangmiao1981/spark,aokolnychyi/spark,jianran/spark,guoxiaolongzte/spark,liutang123/spark,michalsenkyr/spark,SnappyDataInc/spark,pronix/spark,tengpeng/spark,jlopezmalla/spark,rjpower/spark,bdrillard/spark,srowen/spark,big-pegasus/spark,ahnqirage/spark,jkbradley/spark,WeichenXu123/spark,ConeyLiu/spark,szhem/spark,joseph-torres/spark,goldmedal/spark,wangyum/spark,Panos-Bletsos/spark-cost-model-optimizer,bdrillard/spark,byakuinss/spark,andrewor14/iolap,apache-spark-on-k8s/spark,mahak/spark,pronix/spark,JoshRosen/spark,janewangfb/spark,ajaysaini725/spark,srowen/spark,ericvandenbergfb/spark,narahari92/spark,ioana-delaney/spark,JerryLead/spark,darionyaphet/spark,yanboliang/spark,akopich/spark,witgo/spark,Aegeaner/spark,shaneknapp/spark,darionyaphet/spark,dotunolafunmiloye/spark,dongjoon-hyun/spark,gioenn/xSpark,someorz/spark,stanzhai/spark,holdenk/spark,haowu80s/spark,someorz/spark,actuaryzhang/spark,techaddict/spark,ajaysaini725/spark,maropu/spark,xuanyuanking/spark,eyalfa/spark,debugger87/spark,milliman/spark,HyukjinKwon/spark,rikima/spark,nchammas/spark,debugger87/spark,bOOm-X/spark,ptkool/spark,xflin/spark,holdenk/spark,zero323/spark,haowu80s/spark,icexelloss/spark,big-pegasus/spark,shuangshuangwang/spark,wangyum/spark,shubhamchopra/spark,dongjoon-hyun/spark,goldmedal/spark,kiszk/spark,xflin/spark,alunarbeach/spark,dbtsai/spark,metamx/spark,maropu/spark,JoshRosen/spark,sahilTakiar/spark,kimoonkim/spark,sureshthalamati/spark,map222/spark,map222/spark,jrshust/spark,setjet/spark,debugger87/spark,WindCanDie/spark,ueshin/apache-spark,BryanCutler/spark,mdespriee/spark,mahak/spark,darionyaphet/spark,ueshin/apache-spark,narahari92/spark,holdenk/spark,aosagie/spark,ahnqirage/spark,ron8hu/spark,hvanhovell/spark,loneknightpy/spark,ptkool/spark,bOOm-X/spark,shaneknapp/spark,mzl9039/spark,JerryLead/spark,ddna1021/spark,mzl9039/spark,cin/spark,UndeadBaneGitHub/spark,huang1900/spark,janewangfb/spark,xflin/spark,zzcclp/spark,michalsenkyr/spark,joseph-torres/spark,lxsmnv/spark,gioenn/xSpark,szhem/spark,caneGuy/spark,apache/spark,hhbyyh/spark,jiangxb1987/spark,wzhfy/spark,zuotingbing/spark,vinodkc/spark,JoshRosen/spark,rednaxelafx/apache-spark,ddna1021/spark,big-pegasus/spark,nchammas/spark,Aegeaner/spark,byakuinss/spark,milliman/spark,aokolnychyi/spark,SHASHANKB/spark,nchammas/spark,narahari92/spark,Panos-Bletsos/spark-cost-model-optimizer,ahnqirage/spark,stanzhai/spark,sachintyagi22/spark,jrshust/spark,nchammas/spark,bravo-zhang/spark,cloudera/spark,bOOm-X/spark,andrewor14/spark,witgo/spark,gengliangwang/spark,skonto/spark,Panos-Bletsos/spark-cost-model-optimizer,guoxiaolongzte/spark,rednaxelafx/apache-spark,map222/spark,srowen/spark,SHASHANKB/spark,brad-kaiser/spark,someorz/spark,milliman/spark,liyichao/spark,spark-test/spark,dotunolafunmiloye/spark,rezasafi/spark,metamx/spark,sahilTakiar/spark,ptkool/spark,highfei2011/spark,saltstar/spark,jkbradley/spark,maropu/spark,guoxiaolongzte/spark,skonto/spark,skonto/spark,yanboliang/spark,tejasapatil/spark,bdrillard/spark,nilsgrabbert/spark,patrick-nicholson/spark,akopich/spark,xflin/spark,shubhamchopra/spark,nilsgrabbert/spark,gioenn/xSpark,andrewor14/iolap,MLnick/spark,mzl9039/spark,mike0sv/spark,icexelloss/spark,xuanyuanking/spark,jianran/spark,szhem/spark,Aegeaner/spark,michalsenkyr/spark,SnappyDataInc/spark,minixalpha/spark,ibm-research-ireland/sparkoscope,lvdongr/spark,mdespriee/spark,vinodkc/spark,nlalevee/spark,map222/spark,wzhfy/spark,ericvandenbergfb/spark,apache-spark-on-k8s/spark,saturday-shi/spark,ptkool/spark,kiszk/spark,WindCanDie/spark,darionyaphet/spark,pronix/spark,wangmiao1981/spark,caneGuy/spark,guoxiaolongzte/spark,shubhamchopra/spark,tejasapatil/spark,lxsmnv/spark,vinodkc/spark,vax11780/spark,zzcclp/spark,loneknightpy/spark,taroplus/spark,rednaxelafx/apache-spark,stanzhai/spark,hhbyyh/spark,jianran/spark,aokolnychyi/spark,gioenn/xSpark,nilsgrabbert/spark,ibm-research-ireland/sparkoscope,rednaxelafx/apache-spark,brad-kaiser/spark,vinodkc/spark,dotunolafunmiloye/spark,guoxiaolongzte/spark,jkbradley/spark,taroplus/spark,LantaoJin/spark,caneGuy/spark,bravo-zhang/spark,MLnick/spark,apache-spark-on-k8s/spark,szhem/spark,lxsmnv/spark,HyukjinKwon/spark,ron8hu/spark,liyichao/spark,ioana-delaney/spark,alunarbeach/spark,poffuomo/spark,kevinyu98/spark,SHASHANKB/spark,publicRoman/spark,vinodkc/spark,rednaxelafx/apache-spark,aray/spark,goldmedal/spark,sureshthalamati/spark,dbtsai/spark,dhruve/spark,SnappyDataInc/spark,facaiy/spark,spark-test/spark,vinodkc/spark,ahnqirage/spark,WindCanDie/spark,sureshthalamati/spark,setjet/spark,darionyaphet/spark,nilsgrabbert/spark,wangyum/spark,esi-mineset/spark,esi-mineset/spark,tejasapatil/spark,jkbradley/spark,setjet/spark,liutang123/spark,markhamstra/spark,poffuomo/spark,cloudera/spark,kimoonkim/spark,kimoonkim/spark,HyukjinKwon/spark,LantaoJin/spark,zhouyejoe/spark,apache/spark,zzcclp/spark,xuanyuanking/spark,shuangshuangwang/spark,holdenk/spark,bravo-zhang/spark,loneknightpy/spark,milliman/spark,dbtsai/spark,saturday-shi/spark,spark-test/spark,mike0sv/spark,gengliangwang/spark,JoshRosen/spark,hvanhovell/spark,SnappyDataInc/spark,rikima/spark,saturday-shi/spark,dhruve/spark,huang1900/spark,WeichenXu123/spark,taroplus/spark,sureshthalamati/spark,highfei2011/spark,nlalevee/spark,kevinyu98/spark,shaneknapp/spark,cloud-fan/spark,ajaysaini725/spark,wangyum/spark,publicRoman/spark,janewangfb/spark,LantaoJin/spark,ajaysaini725/spark,xuanyuanking/spark,SnappyDataInc/spark,BryanCutler/spark,dongjoon-hyun/spark,poffuomo/spark,eyalfa/spark,hvanhovell/spark,huang1900/spark,cin/spark,SHASHANKB/spark,apache-spark-on-k8s/spark,liutang123/spark,mdespriee/spark,wangmiao1981/spark,witgo/spark,setjet/spark,WindCanDie/spark,ericvandenbergfb/spark,zuotingbing/spark,apache/spark,BryanCutler/spark,ueshin/apache-spark,dbtsai/spark,wangmiao1981/spark,kevinyu98/spark,ericvandenbergfb/spark,shubhamchopra/spark,saltstar/spark,lyogavin/spark,WeichenXu123/spark,matthewfranglen/spark,zhouyejoe/spark,1haodian/spark,brad-kaiser/spark,saturday-shi/spark,pgandhi999/spark,wzhfy/spark,ioana-delaney/spark,actuaryzhang/spark,aosagie/spark,sryza/spark,caneGuy/spark,techaddict/spark,sachintyagi22/spark,debugger87/spark,ron8hu/spark,dhruve/spark,yanboliang/spark,ioana-delaney/spark,bOOm-X/spark,bdrillard/spark,jianran/spark,andrewor14/spark,hhbyyh/spark,zuotingbing/spark,shuangshuangwang/spark,zzcclp/spark,dhruve/spark,bOOm-X/spark,big-pegasus/spark,saltstar/spark,HyukjinKwon/spark,joseph-torres/spark,mkolod/incubator-spark,pgandhi999/spark,ibm-research-ireland/sparkoscope,rednaxelafx/apache-spark,andrewor14/spark,apache/spark,ericvandenbergfb/spark,shuangshuangwang/spark,hhbyyh/spark,akopich/spark,publicRoman/spark,liutang123/spark,lyogavin/spark,rekhajoshm/spark,jlopezmalla/spark,ConeyLiu/spark,aokolnychyi/spark,nchammas/spark,lvdongr/spark,mike0sv/spark,jkbradley/spark,rjpower/spark,shaneknapp/spark,wangmiao1981/spark,gengliangwang/spark,icexelloss/spark,Aegeaner/spark,loneknightpy/spark,mdespriee/spark,mahak/spark,sryza/spark,ConeyLiu/spark,wzhfy/spark,milliman/spark,highfei2011/spark,michalsenkyr/spark,lvdongr/spark,rikima/spark,sahilTakiar/spark,MLnick/spark,setjet/spark,nlalevee/spark,big-pegasus/spark,gioenn/xSpark,huang1900/spark,lxsmnv/spark,stanzhai/spark,haowu80s/spark,ddna1021/spark,sureshthalamati/spark,byakuinss/spark,mkolod/incubator-spark,debugger87/spark,panfengfeng/spark,zero323/spark