The Google File System .pdf

The Google File System .pdf

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时间:2019-03-11

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1、TheGoogleFileSystemSanjayGhemawat,HowardGobioff,andShun-TakLeungGoogle∗ABSTRACT1.INTRODUCTIONWehavedesignedandimplementedtheGoogleFileSys-WehavedesignedandimplementedtheGoogleFileSys-tem,ascalabledistributedfilesystemforlargedistributedtem(GFS)tomeettherapidlygrowin

2、gdemandsofGoogle’sdata-intensiveapplications.Itprovidesfaulttolerancewhiledataprocessingneeds.GFSsharesmanyofthesamegoalsrunningoninexpensivecommodityhardware,anditdeliversaspreviousdistributedfilesystemssuchasperformance,highaggregateperformancetoalargenumberofclie

3、nts.scalability,reliability,andavailability.However,itsdesignWhilesharingmanyofthesamegoalsaspreviousdis-hasbeendrivenbykeyobservationsofourapplicationwork-tributedfilesystems,ourdesignhasbeendrivenbyobser-loadsandtechnologicalenvironment,bothcurrentandan-vationsofo

4、urapplicationworkloadsandtechnologicalenvi-ticipated,thatreflectamarkeddeparturefromsomeearlierronment,bothcurrentandanticipated,thatreflectamarkedfilesystemdesignassumptions.Wehavereexaminedtradi-departurefromsomeearlierfilesystemassumptions.Thistionalchoicesandexplor

5、edradicallydifferentpointsinthehasledustoreexaminetraditionalchoicesandexplorerad-designspace.icallydifferentdesignpoints.First,componentfailuresarethenormratherthantheThefilesystemhassuccessfullymetourstorageneeds.exception.ThefilesystemconsistsofhundredsorevenItiswid

6、elydeployedwithinGoogleasthestorageplatformthousandsofstoragemachinesbuiltfrominexpensivecom-forthegenerationandprocessingofdatausedbyourser-moditypartsandisaccessedbyacomparablenumberofviceaswellasresearchanddevelopmenteffortsthatrequireclientmachines.Thequantityan

7、dqualityofthecompo-largedatasets.Thelargestclustertodateprovideshun-nentsvirtuallyguaranteethatsomearenotfunctionalatdredsofterabytesofstorageacrossthousandsofdisksonanygiventimeandsomewillnotrecoverfromtheircur-overathousandmachines,anditisconcurrentlyaccessedrent

8、failures.Wehaveseenproblemscausedbyapplicationbyhundredsofclients.bugs,operatingsystembugs,humanerrors,andthefailuresInthispaper,wepresentfilesyst

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