- Resolved some of the simpler TODOs related to different timeout and wait periods. - Removed unused code.
- Resolved some of the simpler TODOs related to different timeout and wait periods.
- Removed unused code.

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