storage: add comment around compact
storage: add comment around compact

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