wal: clarify TODO
wal: clarify TODO

princeqjzh/etcd,betawaffle/etcd,tempbottle/etcd,justintung/etcd,etcd-io/etcd,es-chow/etcd,sinsharat/etcd,handsomesun/etcd,cockroachdb/etcd,cchamplin/etcd,tamird/etcd,youxidev/etcd,hongchaodeng/etcd,ajityagaty/etcd,fanminshi/etcd,jlamillan/etcd,iamqizhao/etcd,xychu/etcd,ylong/etcd,wantonsolutions/dinv-etcd,svdata/etcd,whuwxl/etcd,barakmich/etcd,fasaxc/etcd,buaazp/etcd,njucslqq/etcd,chenbaihu/etcd,yifan-gu/etcd,plasticbox/etcd,steveeJ/etcd,lorneli/etcd,msanterre/etcd,ajityagaty/etcd,etcd-io/etcd,jefby/etcd,glevand/coreos--etcd,polvi/etcd,insequent/etcd,kingland/etcd,onlyjob/etcd,visheshnp/etcd,fgbreel/etcd,wantonsolutions/dinv-etcd,crandles/etcd,mwitkow/etcd,axingblog/etcd,gae123/etcd,ktateish/etcd,offscale/etcd,jmptrader/etcd,mqliang/etcd,hroyrh/etcd,combk8s/etcd,improbable-io/etcd,insequent/etcd,jravetch/etcd,ylong/etcd,coreos/etcd,mwitkow-io/etcd,jefby/etcd,Winslett/etcd,fgbreel/etcd,rnaveiras/etcd,hongbinz/etcd,siddontang/etcd,devfreesg/etcd,whuwxl/etcd,bluebreezecf/etcd,yyljlyy/etcd,vimalk78/etcd,dannysauer/etcd,akauppi/etcd,cognusion/etcd,yudai/etcd,dterei/etcd,a-robinson/etcd,shakefu/etcd,onlyjob/etcd,yichengq/etcd,raoofm/etcd,Timer/etcd,lzbgt/etcd,nekto0n/etcd,ecnahc515/etcd,HideoYamauchi/etcd,glycerine/etcd,freeloop1114/etcd,hpcloud/etcd,olark/etcd,gityf/etcd,mickep76/etcd,gouyang/etcd,achanda/etcd,li-ang/etcd,TheHippo/etcd,chenbaihu/etcd,asim/etcd,mwitkow/etcd,dalanlan/etcd,etcd-io/etcd,steveeJ/etcd,zaphod-concur/etcd,yichengq/etcd,njucslqq/etcd,dalanlan/etcd,pengzj/etcd,qqsun8819/etcd,tempbottle/etcd,QuantiumTechnology/etcd,mqliang/etcd,kkaneda/etcd,StorReduce/etcd,vimalk78/etcd,glycerine/etcd,pauldallen/etcd,snailwalker/etcd,YuleiXiao/etcd,wowsoso/etcd,linuxcer/etcd,asim/etcd,csuideal/etcd,qqsun8819/etcd,luxas/etcd,chipironcin/etcd,csuideal/etcd,jeremyeder/etcd,heyitsanthony/etcd,crandles/etcd,wantonsolutions/dinv-etcd,yudai/etcd,mickep76/etcd,YuleiXiao/etcd,insionng/etcd,QuantiumTechnology/etcd,jlamillan/etcd,openedbox/etcd,arthurcolle/etcd,StorReduce/etcd,xiang90/etcd,spacejam/etcd,shafreeck/etcd,sebrandon1/etcd,xiang90/etcd,njharman/etcd,arthurcolle/etcd,glensc/etcd,pigfoot/etcd,beni55/etcd,improbable-io/etcd,nkhare/etcd,mgoelzer/etcd-fork2,sebrandon1/etcd,jmptrader/etcd,purpleidea/etcd,chai2010-playground/etcd,linuxcer/etcd,barakmich/etcd,chai2010/etcd,mischief/etcd,ravigadde/etcd,shawnps/etcd,hongchaodeng/etcd,sebschrader/etcd,Eagle-X/etcd,sinsharat/etcd,hzy001/etcd,gosharplite/etcd,swingbach/etcd,polvi/etcd,TheHippo/etcd,es-chow/etcd,mgoelzer/etcd-fork2,hpcloud/etcd,sayden/etcd,chipironcin/etcd,wowsoso/etcd,jonboulle/etcd,rnaveiras/etcd,OyTao/etcd_learning,gyuho/etcd,xdlinear/etcd,shawnps/etcd,mkumatag/etcd,jchauncey/etcd,rchicoli/etcd,hongbinz/etcd,bakins/etcd,cockroachdb/etcd,cognusion/etcd,bdarnell/etcd,imzhulei/etcd,lumjjb/etcd,nieanan/etcd,jonboulle/etcd,qiaochao911/etcd,betawaffle/etcd,dannysauer/etcd,armstrongli/etcd,oscarrr110/etcd,joshix/etcd,tguangch/etcd,shafreeck/etcd,raoofm/etcd,dnaeon/etcd,HideoYamauchi/etcd,gtank/etcd,combk8s/etcd,olark/etcd,sayden/etcd,axingblog/etcd,SivagnanamCiena/etcd,kingland/etcd,njharman/etcd,gityf/etcd,lorneli/etcd,joshix/etcd,li-ang/etcd,chai2010/etcd,purpleidea/etcd,snailwalker/etcd,spacejam/etcd,shakefu/etcd,armstrongli/etcd,oscarrr110/etcd,justintung/etcd,mitake/etcd,glensc/etcd,mwitkow-io/etcd,glevand/coreos--etcd,jeremyeder/etcd,youxidev/etcd,junxu/etcd,akauppi/etcd,wfxiang08/etcd,dterei/etcd,delkyd/etcd,gosharplite/etcd,tangkun75/etcd,ktateish/etcd,mqliang/etcd,dnaeon/etcd,yifan-gu/etcd,lumjjb/etcd,bspline/etcd,kkaneda/etcd,Yhgenomics/etcd,lzbgt/etcd,rchicoli/etcd,pengzj/etcd,xebitstudios/etcd,Winslett/etcd,mike-lerch/etcd,tguangch/etcd,CrazyJvm/etcd,tangkun75/etcd,hzy001/etcd,mitake/etcd,sofuture/etcd,pauldallen/etcd,mkumatag/etcd,endocode/etcd,coreos/etcd,endocode/etcd,robszumski/etcd,junxu/etcd,giantswarm/etcd,svdata/etcd,delkyd/etcd,cchamplin/etcd,Timer/etcd,mkumatag/etcd,nekto0n/etcd,a-robinson/etcd,devfreesg/etcd,gyuho/etcd,jchauncey/etcd,bdarnell/etcd,sebschrader/etcd,bspline/etcd,qiaochao911/etcd,elimisteve/etcd,fanminshi/etcd,jravetch/etcd,mike-lerch/etcd,bakins/etcd,chai2010-playground/etcd,elimisteve/etcd,Eagle-X/etcd,yyljlyy/etcd,offscale/etcd,xebitstudios/etcd,freeloop1114/etcd,msanterre/etcd,tamird/etcd,imzhulei/etcd,ecnahc515/etcd,rnaveiras/etcd,sofuture/etcd,insionng/etcd,bluebreezecf/etcd,nkhare/etcd,honeyqa/etcd,gtank/etcd,xdlinear/etcd,beni55/etcd,siddontang/etcd,xueshanf/etcd,ravigadde/etcd,princeqjzh/etcd,handsomesun/etcd,visheshnp/etcd,heyitsanthony/etcd,plasticbox/etcd,swingbach/etcd,wfxiang08/etcd,OyTao/etcd_learning,nieanan/etcd,westhood/etcd,ajityagaty/etcd,SivagnanamCiena/etcd,gouyang/etcd,xychu/etcd,CrazyJvm/etcd,hroyrh/etcd,iamqizhao/etcd,fasaxc/etcd,luxas/etcd,zaphod-concur/etcd,Yhgenomics/etcd,robszumski/etcd,achanda/etcd,westhood/etcd,mischief/etcd,giantswarm/etcd,buaazp/etcd,openedbox/etcd,xueshanf/etcd,gae123/etcd,fasaxc/etcd,honeyqa/etcd