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数据湖构建

数据湖构建服务作为云原生数据湖架构核心组成部分，帮助用户简单快速地构建云原生数据湖解决方案。数据湖构建提供湖上元数据统一管理、企业级权限控制，并无缝对接多种计算引擎，打破数据孤岛，洞察业务价值。

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如果新开通E-MapReduce集群选择数据湖服务所有数据都存在OSS上吗

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阿里云E-MapReduce数据湖分析和存算分离都支持湖上建仓和仓下沉到湖么？

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