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1、JournalofPhysics:ConferenceSeriesPAPER•OPENACCESSRecentcitationsAscalablemonitoringfortheCMSFilterFarm-Jean-MarcAndreetalbasedonelasticsearchTocitethisarticle:J-MAndreetal2015J.Phys.:Conf.Ser.664082036Viewthearticleonlineforupdatesandenhancements.ThiscontentwasdownloadedfromIPaddress117
2、.165.43.135on07/09/2018at10:1021stInternationalConferenceonComputinginHighEnergyandNuclearPhysics(CHEP2015)IOPPublishingJournalofPhysics:ConferenceSeries664(2015)082036doi:10.1088/1742-6596/664/8/082036AscalablemonitoringfortheCMSFilterFarmbasedonelasticsearchJ-MAndre5,AAndronidis2,UBeh
3、rens1,JBranson4,OChaze2,SCittolin4,G-LDarlea6,CDeldicque2,MDobson2,ADupont2,SErhan3,DGigi2,FGlege2,GGomez-Ceballos6,JHegeman2,AHolzner4,RJimenez-Estupi~nan2,LMasetti2,FMeijers2,EMeschi2,RKMommsen5,SMorovic2,CNunez-Barranco-Fernandez2,VO'Dell5,LOrsini2,CPaus6,APetrucci2,MPieri4,ARacz2,P
4、Roberts2,HSakulin2,CSchwick2,BStieger2,KSumorok6,JVeverka6,SZaza2andPZejdl21DESY,Hamburg,Germany2CERN,Geneva,Switzerland3UniversityofCalifornia,LosAngeles,California,USA4UniversityofCalifornia,SanDiego,California,USA5FNAL,Chicago,Illinois,USA6MassachusettsInstituteofTechnology,Cambridge
5、,Massachusetts,USAE-mail:srecko.morovic@cern.chAbstract.A
exiblemonitoringsystemhasbeendesignedfortheCMSFile-basedFilterFarmmakinguseofmoderndataminingandanalyticscomponents.Allthemetadataandmonitoringinformationconcerningdata
owandexecutionoftheHLTaregeneratedlocallyintheformofsmalldoc
6、umentsusingtheJSONencoding.Thesedocumentsareindexedintoahierarchyofelasticsearch(es)clustersalongwithprocessandsystemloginformation.ElasticsearchisasearchserverbasedonApacheLucene.Itprovidesadistributed,multitenant-capablesearchandaggregationengine.Sinceesisschema-free,anynewinformation
7、canbeaddedseamlesslyandtheunstructuredinformationcanbequeriedinnon-predeterminedways.TheleafesclustersconsistoftheverysamenodesthatformtheFilterFarmthusprovidingnaturalhorizontalscaling.Aseparatecentral"esclusterisusedtocollectandindexaggregatedinformation.The ne-grainedinforma
