Remove outdated remark about take(n).
Remove outdated remark about take(n).

Looking at the code, I believe this remark about `take(n)` computing partitions on the driver is no longer correct. Apologies if I'm wrong.

This came up in http://stackoverflow.com/q/28436559/3318517.

Author: Daniel Darabos <darabos.daniel@gmail.com>

Closes #4533 from darabos/patch-2 and squashes the following commits:

cc80f3a [Daniel Darabos] Remove outdated remark about take(n).

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