Fix race condition on filesystem access that can arise when multiple processes try to initialize the catalog on a shared network filesystem.
Fix race condition on filesystem access that can arise when multiple
processes try to initialize the catalog on a shared network filesystem.

aarchiba/scipy,mdhaber/scipy,lukauskas/scipy,lhilt/scipy,rmcgibbo/scipy,scipy/scipy,rmcgibbo/scipy,andim/scipy,jor-/scipy,vhaasteren/scipy,giorgiop/scipy,niknow/scipy,larsmans/scipy,apbard/scipy,efiring/scipy,surhudm/scipy,felipebetancur/scipy,maciejkula/scipy,behzadnouri/scipy,witcxc/scipy,ChanderG/scipy,zerothi/scipy,larsmans/scipy,fernand/scipy,andim/scipy,zxsted/scipy,befelix/scipy,mhogg/scipy,ilayn/scipy,mikebenfield/scipy,nmayorov/scipy,ales-erjavec/scipy,mgaitan/scipy,mortonjt/scipy,Eric89GXL/scipy,matthew-brett/scipy,jsilter/scipy,vanpact/scipy,tylerjereddy/scipy,mortada/scipy,pnedunuri/scipy,Shaswat27/scipy,Shaswat27/scipy,mdhaber/scipy,cpaulik/scipy,grlee77/scipy,anntzer/scipy,Srisai85/scipy,gef756/scipy,andyfaff/scipy,larsmans/scipy,gertingold/scipy,ortylp/scipy,matthew-brett/scipy,pbrod/scipy,mdhaber/scipy,mikebenfield/scipy,josephcslater/scipy,jakevdp/scipy,anielsen001/scipy,anntzer/scipy,efiring/scipy,mikebenfield/scipy,richardotis/scipy,gfyoung/scipy,teoliphant/scipy,tylerjereddy/scipy,rmcgibbo/scipy,gef756/scipy,jsilter/scipy,pnedunuri/scipy,apbard/scipy,nvoron23/scipy,endolith/scipy,e-q/scipy,piyush0609/scipy,Newman101/scipy,haudren/scipy,lukauskas/scipy,hainm/scipy,woodscn/scipy,Shaswat27/scipy,dch312/scipy,Gillu13/scipy,raoulbq/scipy,grlee77/scipy,raoulbq/scipy,mtrbean/scipy,WarrenWeckesser/scipy,gef756/scipy,perimosocordiae/scipy,haudren/scipy,tylerjereddy/scipy,zaxliu/scipy,Shaswat27/scipy,ChanderG/scipy,aman-iitj/scipy,FRidh/scipy,kalvdans/scipy,Srisai85/scipy,mdhaber/scipy,bkendzior/scipy,haudren/scipy,fernand/scipy,richardotis/scipy,befelix/scipy,anielsen001/scipy,zaxliu/scipy,jonycgn/scipy,grlee77/scipy,behzadnouri/scipy,argriffing/scipy,perimosocordiae/scipy,gdooper/scipy,vanpact/scipy,pizzathief/scipy,minhlongdo/scipy,WillieMaddox/scipy,e-q/scipy,ChanderG/scipy,mtrbean/scipy,njwilson23/scipy,larsmans/scipy,vanpact/scipy,chatcannon/scipy,mortada/scipy,WarrenWeckesser/scipy,Kamp9/scipy,gertingold/scipy,mhogg/scipy,andim/scipy,nmayorov/scipy,minhlongdo/scipy,juliantaylor/scipy,Kamp9/scipy,argriffing/scipy,bkendzior/scipy,giorgiop/scipy,haudren/scipy,dch312/scipy,mortada/scipy,FRidh/scipy,andim/scipy,tylerjereddy/scipy,dch312/scipy,nvoron23/scipy,Kamp9/scipy,petebachant/scipy,matthew-brett/scipy,trankmichael/scipy,aarchiba/scipy,cpaulik/scipy,maciejkula/scipy,sauliusl/scipy,mhogg/scipy,gfyoung/scipy,pyramania/scipy,arokem/scipy,richardotis/scipy,hainm/scipy,pbrod/scipy,vhaasteren/scipy,Shaswat27/scipy,ortylp/scipy,petebachant/scipy,fredrikw/scipy,Newman101/scipy,juliantaylor/scipy,Stefan-Endres/scipy,richardotis/scipy,maniteja123/scipy,ogrisel/scipy,bkendzior/scipy,Eric89GXL/scipy,sauliusl/scipy,endolith/scipy,Newman101/scipy,surhudm/scipy,kleskjr/scipy,FRidh/scipy,mhogg/scipy,Newman101/scipy,mingwpy/scipy,trankmichael/scipy,Stefan-Endres/scipy,fernand/scipy,trankmichael/scipy,jjhelmus/scipy,richardotis/scipy,sargas/scipy,person142/scipy,Stefan-Endres/scipy,vberaudi/scipy,mortada/scipy,newemailjdm/scipy,grlee77/scipy,andyfaff/scipy,apbard/scipy,trankmichael/scipy,jor-/scipy,aarchiba/scipy,Kamp9/scipy,anntzer/scipy,endolith/scipy,cpaulik/scipy,pyramania/scipy,WarrenWeckesser/scipy,zxsted/scipy,ales-erjavec/scipy,argriffing/scipy,ortylp/scipy,newemailjdm/scipy,witcxc/scipy,sargas/scipy,lukauskas/scipy,WillieMaddox/scipy,Dapid/scipy,josephcslater/scipy,aman-iitj/scipy,niknow/scipy,Srisai85/scipy,pnedunuri/scipy,zxsted/scipy,niknow/scipy,petebachant/scipy,vberaudi/scipy,WillieMaddox/scipy,WillieMaddox/scipy,fredrikw/scipy,zaxliu/scipy,surhudm/scipy,jonycgn/scipy,apbard/scipy,vhaasteren/scipy,jor-/scipy,maciejkula/scipy,Newman101/scipy,mingwpy/scipy,aeklant/scipy,jseabold/scipy,teoliphant/scipy,mortonjt/scipy,Stefan-Endres/scipy,Shaswat27/scipy,witcxc/scipy,gfyoung/scipy,aarchiba/scipy,ogrisel/scipy,cpaulik/scipy,Stefan-Endres/scipy,mortonjt/scipy,piyush0609/scipy,gfyoung/scipy,surhudm/scipy,juliantaylor/scipy,rgommers/scipy,mikebenfield/scipy,vberaudi/scipy,cpaulik/scipy,felipebetancur/scipy,minhlongdo/scipy,woodscn/scipy,futurulus/scipy,futurulus/scipy,ogrisel/scipy,sriki18/scipy,nvoron23/scipy,raoulbq/scipy,pizzathief/scipy,e-q/scipy,dominicelse/scipy,rmcgibbo/scipy,nonhermitian/scipy,nonhermitian/scipy,kalvdans/scipy,sriki18/scipy,fredrikw/scipy,juliantaylor/scipy,Gillu13/scipy,futurulus/scipy,vberaudi/scipy,aman-iitj/scipy,newemailjdm/scipy,perimosocordiae/scipy,jseabold/scipy,nmayorov/scipy,Dapid/scipy,mortonjt/scipy,jamestwebber/scipy,anielsen001/scipy,ndchorley/scipy,dominicelse/scipy,ndchorley/scipy,mingwpy/scipy,trankmichael/scipy,pizzathief/scipy,mtrbean/scipy,ales-erjavec/scipy,pschella/scipy,chatcannon/scipy,vberaudi/scipy,haudren/scipy,Kamp9/scipy,mgaitan/scipy,pschella/scipy,ogrisel/scipy,efiring/scipy,gertingold/scipy,arokem/scipy,ChanderG/scipy,efiring/scipy,behzadnouri/scipy,aman-iitj/scipy,WillieMaddox/scipy,nonhermitian/scipy,teoliphant/scipy,dominicelse/scipy,niknow/scipy,mgaitan/scipy,kleskjr/scipy,sonnyhu/scipy,ales-erjavec/scipy,chatcannon/scipy,argriffing/scipy,sonnyhu/scipy,fredrikw/scipy,jjhelmus/scipy,felipebetancur/scipy,sriki18/scipy,njwilson23/scipy,zaxliu/scipy,nvoron23/scipy,teoliphant/scipy,fernand/scipy,petebachant/scipy,vigna/scipy,rgommers/scipy,lukauskas/scipy,surhudm/scipy,ilayn/scipy,matthew-brett/scipy,witcxc/scipy,person142/scipy,jonycgn/scipy,nvoron23/scipy,kleskjr/scipy,pschella/scipy,mortada/scipy,ndchorley/scipy,woodscn/scipy,andim/scipy,zerothi/scipy,anntzer/scipy,jsilter/scipy,sriki18/scipy,jonycgn/scipy,aarchiba/scipy,zerothi/scipy,kleskjr/scipy,rgommers/scipy,newemailjdm/scipy,sargas/scipy,mgaitan/scipy,maciejkula/scipy,jamestwebber/scipy,sauliusl/scipy,josephcslater/scipy,Gillu13/scipy,e-q/scipy,bkendzior/scipy,mortada/scipy,aman-iitj/scipy,gdooper/scipy,kalvdans/scipy,njwilson23/scipy,vanpact/scipy,pnedunuri/scipy,jakevdp/scipy,futurulus/scipy,e-q/scipy,teoliphant/scipy,WillieMaddox/scipy,felipebetancur/scipy,fredrikw/scipy,mtrbean/scipy,ChanderG/scipy,vanpact/scipy,nonhermitian/scipy,gertingold/scipy,Gillu13/scipy,hainm/scipy,FRidh/scipy,andyfaff/scipy,piyush0609/scipy,jor-/scipy,rgommers/scipy,pyramania/scipy,andyfaff/scipy,ndchorley/scipy,newemailjdm/scipy,jjhelmus/scipy,maniteja123/scipy,mtrbean/scipy,woodscn/scipy,minhlongdo/scipy,zerothi/scipy,Dapid/scipy,woodscn/scipy,pnedunuri/scipy,mortonjt/scipy,felipebetancur/scipy,lhilt/scipy,matthewalbani/scipy,niknow/scipy,Gillu13/scipy,jseabold/scipy,bkendzior/scipy,kleskjr/scipy,ilayn/scipy,giorgiop/scipy,mhogg/scipy,mingwpy/scipy,vberaudi/scipy,zaxliu/scipy,aeklant/scipy,pyramania/scipy,maniteja123/scipy,Eric89GXL/scipy,scipy/scipy,lukauskas/scipy,matthewalbani/scipy,vigna/scipy,aeklant/scipy,aman-iitj/scipy,Dapid/scipy,jsilter/scipy,mingwpy/scipy,larsmans/scipy,pbrod/scipy,pizzathief/scipy,dch312/scipy,gef756/scipy,jjhelmus/scipy,maniteja123/scipy,maniteja123/scipy,nmayorov/scipy,njwilson23/scipy,josephcslater/scipy,dch312/scipy,hainm/scipy,endolith/scipy,mtrbean/scipy,behzadnouri/scipy,matthewalbani/scipy,ortylp/scipy,Eric89GXL/scipy,sargas/scipy,behzadnouri/scipy,arokem/scipy,newemailjdm/scipy,niknow/scipy,vigna/scipy,jseabold/scipy,Eric89GXL/scipy,pbrod/scipy,zaxliu/scipy,witcxc/scipy,lhilt/scipy,mgaitan/scipy,mhogg/scipy,fernand/scipy,gdooper/scipy,woodscn/scipy,argriffing/scipy,sauliusl/scipy,piyush0609/scipy,richardotis/scipy,FRidh/scipy,raoulbq/scipy,sauliusl/scipy,mortonjt/scipy,pyramania/scipy,efiring/scipy,person142/scipy,perimosocordiae/scipy,pizzathief/scipy,rgommers/scipy,sonnyhu/scipy,andim/scipy,jakevdp/scipy,anntzer/scipy,cpaulik/scipy,Srisai85/scipy,jseabold/scipy,chatcannon/scipy,chatcannon/scipy,sonnyhu/scipy,tylerjereddy/scipy,vanpact/scipy,giorgiop/scipy,ilayn/scipy,WarrenWeckesser/scipy,pnedunuri/scipy,sonnyhu/scipy,hainm/scipy,perimosocordiae/scipy,vhaasteren/scipy,mingwpy/scipy,larsmans/scipy,Eric89GXL/scipy,rmcgibbo/scipy,anielsen001/scipy,fernand/scipy,aeklant/scipy,vhaasteren/scipy,ndchorley/scipy,trankmichael/scipy,perimosocordiae/scipy,gertingold/scipy,anntzer/scipy,rmcgibbo/scipy,scipy/scipy,hainm/scipy,surhudm/scipy,matthewalbani/scipy,jor-/scipy,vhaasteren/scipy,nvoron23/scipy,kalvdans/scipy,scipy/scipy,minhlongdo/scipy,efiring/scipy,Srisai85/scipy,WarrenWeckesser/scipy,minhlongdo/scipy,Newman101/scipy,matthew-brett/scipy,fredrikw/scipy,kleskjr/scipy,matthewalbani/scipy,ales-erjavec/scipy,gdooper/scipy,sargas/scipy,jakevdp/scipy,FRidh/scipy,raoulbq/scipy,pbrod/scipy,ilayn/scipy,zxsted/scipy,maniteja123/scipy,dominicelse/scipy,maciejkula/scipy,Gillu13/scipy,ilayn/scipy,piyush0609/scipy,behzadnouri/scipy,nmayorov/scipy,befelix/scipy,futurulus/scipy,gdooper/scipy,gfyoung/scipy,Kamp9/scipy,jseabold/scipy,jamestwebber/scipy,lhilt/scipy,grlee77/scipy,zerothi/scipy,zxsted/scipy,ortylp/scipy,ales-erjavec/scipy,chatcannon/scipy,andyfaff/scipy,vigna/scipy,endolith/scipy,jakevdp/scipy,nonhermitian/scipy,gef756/scipy,anielsen001/scipy,jamestwebber/scipy,njwilson23/scipy,felipebetancur/scipy,pschella/scipy,jjhelmus/scipy,sriki18/scipy,giorgiop/scipy,kalvdans/scipy,gef756/scipy,andyfaff/scipy,ortylp/scipy,vigna/scipy,Dapid/scipy,person142/scipy,juliantaylor/scipy,scipy/scipy,lukauskas/scipy,zerothi/scipy,pbrod/scipy,endolith/scipy,mdhaber/scipy,ogrisel/scipy,ChanderG/scipy,aeklant/scipy,sonnyhu/scipy,apbard/scipy,sauliusl/scipy,arokem/scipy,raoulbq/scipy,lhilt/scipy,futurulus/scipy,scipy/scipy,WarrenWeckesser/scipy,haudren/scipy,piyush0609/scipy,mgaitan/scipy,mdhaber/scipy,ndchorley/scipy,argriffing/scipy,mikebenfield/scipy,petebachant/scipy,jonycgn/scipy,anielsen001/scipy,dominicelse/scipy,giorgiop/scipy,zxsted/scipy,jonycgn/scipy,jsilter/scipy,petebachant/scipy,arokem/scipy,person142/scipy,Dapid/scipy,Stefan-Endres/scipy,pschella/scipy,josephcslater/scipy,sriki18/scipy,jamestwebber/scipy,Srisai85/scipy,befelix/scipy,njwilson23/scipy,befelix/scipy