基于hadoop2fhbase集群在线-分析处理反应调度

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1、万方数据StatementofOriginalityIdeclarethattheworkpresentedinthisDissertationistothebestofmyknowledgeandbelief,originalandmyownwork，exceptasacknowledgedinthetext，andthatthematerialhasnotbeensubmitted，eitherinwholeorinpart，foradegreeatthisoranyotherUniversit

2、y．Author：Signature：Date：Authorizationnpresentingthisthesisinpartialfulfillmentoftherequirementsforamaster’SdegreeatCentralSouthUniversity,IgranttoCentralSouthUniversib／thenon—exclusiveroyalty-freerighttoarchive，reproduce。distribute?anddisplaythethesisi

3、nanyandallforms。includingelectronicformat．viaanydigitallibrarymechanismsmaintainedbytheuniversity．IacknowledgethatIretainownershiprightstothecopyrightofthiswork，includingbutnotlimitedtotherighttouseallorpartofthisworkinfutureworks，suchasarticlesorbooks

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5、：Date：万方数据ReactiveSchedulingforOnlineAnalyticalProcessingoverHadoop／HBaseClusterAbstract：DatawarehousesandOLAP(OnLineAnalyticalProcessing)systemsallowquickaccessandsyntheticlargevolumesofdataforanalysis．Itisinthissensethatdatawarehousesareessentialtool

6、sforBI(businessintelligence)．TheHadoop／HBaseclustersinparticularprovideimportantresourcesforprocessingandstorage．ThedeploymentofawarehouseonHadoop／HBaseclusterinfrastructure，however,requirestheadaptationofthemultidimensionalmodelandOLAPprocesstoreflect

7、thedistributionofdataandaggregates．ThemultidimensionalmodelexploitsthehorizontalfragmentationofaggregatestablesandcolumnorientednatureoftheHBasedatabase．Theavailabilityofdata，especiallyinthiscontestofdistributeddataisnottrivial．Andthat’Swhythisthesisin

8、troducesamodelforidentifyingdataofwarehouseandamethodofindexingdataasmultidimensionalblocks．Thesearchofavailabledataindistributedwarehouserequiresanunambiguousidentificationofthedata．ThismodelleverageshowtheOLAPqueriesreferencethedatain