Clarify the documentation on env variables for standalone mode
Clarify the documentation on env variables for standalone mode

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