mysql5 集群 官方文档 mysql-cluster-excerpt-5.1-en.a4

MySQLClusterMySQLClusterAbstractThisistheMySQLClusterextractfromtheMySQL5.1ReferenceManual.Documentgeneratedon:2011-07-27(revision:26958)Copyright©1997,2011,Oracleand/oritsaffiliates.Allrightsreserved.Thissoftwareandrelateddocumentationareprovidedunderalicenseagreementcontainingrestrictionsonuseanddisclosureandareprotectedbyintellectualpropertylaws.Exceptasexpresslypermittedinyourlicenseagreementorallowedbylaw,youmaynotuse,copy,reproduce,translate,broadcast,modify,license,transmit,distribute,exhibit,perform,publish,ordisplayanypart,inanyform,orbyanymeans.Reverseengineering,disassembly,ordecompilationofthissoftware,unlessrequiredbylawforinteroperability,isprohibited.Theinformationcontainedhereinissubjecttochangewithoutnoticeandisnotwarrantedtobeerror-free.Ifyoufindanyerrors,pleasereportthemtousinwriting.IfthissoftwareorrelateddocumentationisdeliveredtotheU.S.GovernmentoranyonelicensingitonbehalfoftheU.S.Government,thefollow-ingnoticeisapplicable:U.S.GOVERNMENTRIGHTSPrograms,software,databases,andrelateddocumentationandtechnicaldatadeliveredtoU.S.Governmentcus-tomersarecommercialcomputersoftwareorcommercialtechnicaldatapursuanttotheapplicableFederalAcquisitionRegulationandagency-specificsupplementalregulations.Assuch,theuse,duplication,disclosure,modification,andadaptationshallbesubjecttotherestrictionsandli-censetermssetforthintheapplicableGovernmentcontract,and,totheextentapplicablebythetermsoftheGovernmentcontract,theadditionalrightssetforthinFAR52.227-19,CommercialComputerSoftwareLicense(December2007).OracleUSA,Inc.,500OracleParkway,RedwoodCity,CA94065.Thissoftwareisdevelopedforgeneraluseinavarietyofinformationmanagementapplications.Itisnotdevelopedorintendedforuseinanyinher-entlydangerousapplications,includingapplicationswhichmaycreateariskofpersonalinjury.Ifyouusethissoftwareindangerousapplications,thenyoushallberesponsibletotakeallappropriatefail-safe,backup,redundancy,andothermeasurestoensurethesafeuseofthissoftware.OracleCorporationanditsaffiliatesdisclaimanyliabilityforanydamagescausedbyuseofthissoftwareindangerousapplications.OracleisaregisteredtrademarkofOracleCorporationand/oritsaffiliates.MySQLisatrademarkofOracleCorporationand/oritsaffiliates,andshallnotbeusedwithoutOracle'sexpresswrittenauthorization.Othernamesmaybetrademarksoftheirrespectiveowners.Thissoftwareanddocumentationmayprovideaccesstoorinformationoncontent,products,andservicesfromthirdparties.OracleCorporationanditsaffiliatesarenotresponsibleforandexpresslydisclaimallwarrantiesofanykindwithrespecttothird-partycontent,products,andservices.OracleCorporationanditsaffiliateswillnotberesponsibleforanyloss,costs,ordamagesincurredduetoyouraccesstooruseofthird-partycon-tent,products,orservices.Thisdocumentinanyform,softwareorprintedmatter,containsproprietaryinformationthatistheexclusivepropertyofOracle.YouraccesstoanduseofthismaterialissubjecttothetermsandconditionsofyourOracleSoftwareLicenseandServiceAgreement,whichhasbeenexecutedandwithwhichyouagreetocomply.Thisdocumentandinformationcontainedhereinmaynotbedisclosed,copied,reproduced,ordistributedtoany-oneoutsideOraclewithoutpriorwrittenconsentofOracleorasspecificallyprovidedbelow.ThisdocumentisnotpartofyourlicenseagreementnorcanitbeincorporatedintoanycontractualagreementwithOracleoritssubsidiariesoraffiliates.ThisdocumentationisNOTdistributedunderaGPLlicense.Useofthisdocumentationissubjecttothefollowingterms:Youmaycreateaprintedcopyofthisdocumentationsolelyforyourownpersonaluse.Conversiontootherformatsisallowedaslongastheactualcontentisnotalteredoreditedinanyway.Youshallnotpublishordistributethisdocumentationinanyformoronanymedia,exceptifyoudistrib-utethedocumentationinamannersimilartohowOracledisseminatesit(thatis,electronicallyfordownloadonaWebsitewiththesoftware)oronaCD-ROMorsimilarmedium,providedhoweverthatthedocumentationisdisseminatedtogetherwiththesoftwareonthesamemedium.Anyoth-eruse,suchasanydisseminationofprintedcopiesoruseofthisdocumentation,inwholeorinpart,inanotherpublication,requiresthepriorwrit-tenconsentfromanauthorizedrepresentativeofOracle.Oracleand/oritsaffiliatesreserveanyandallrightstothisdocumentationnotexpresslygrantedabove.Formoreinformationonthetermsofthislicense,fordetailsonhowtheMySQLdocumentationisbuiltandproduced,orifyouareinterestedindoingatranslation,pleasevisitMySQLContact&Questions.Foradditionallicensinginformation,includinglicensesforthird-partylibrariesusedbyMySQLproducts,seePrefaceandNotes.IfyouwanthelpwithusingMySQL,pleasevisiteithertheMySQLForumsorMySQLMailingListswhereyoucandiscussyourissueswithotherMySQLusers.ForadditionaldocumentationonMySQLproducts,includingtranslationsofthedocumentationintootherlanguages,anddownloadableversionsinvarietyofformats,includingHTMLandPDFformats,seetheMySQLDocumentationLibrary.MySQLClusterNDB6.X/7.XThischaptercontainsinformationaboutMySQLCluster,whichisahigh-availability,high-redundancyversionofMySQLadaptedforthedistributedcomputingenvironment.CurrentreleasesofMySQLClusteruseversions6and7oftheNDBCLUSTERstorageengine(alsok