hadoop多数据中心灾备
ThebasisofthissolutionistohaveoneormoremirrorHadoopclusterswhichwillbecontinuouslyupdatedwiththedatafromtheprimaryclusterineitherasynchronousmethodoranasynchronousmethodbyutilizingandimprovingtheexistingHAfeature,datablockreplicationanddatablockpipelining.Inthissolution,wesupport
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