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h. Property Valuation Calculator: Tool for owners to find fair market value price of properties 铮?N事实星座模型是更为复杂的模型,其中包含多个事实表,而维度表是公用的,可以共享。 ? D乐9娱乐场游戏
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OLAP需要以大量历史数据为基础,配合时间点的差异并对多维度及汇整型的信息进行复杂的分析。
OLAP需要用户有主观的信息需求定义,因此系统效率较高。
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How much money should I spend
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第三步,创建度量。Apache Kylin支持的度量有SUM、MIN、MAX、COUNT、COUNT_DISTINCT、TOP_N、EXTENDED_COLUMN、PERCENTILE等。默认Apache Kylin会创建一个Count(1)度量。铮? 铮?L
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Hdfs NameNode 页面:
Yarn ResourceManager 页面:
HBase 页面:
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每一个 Snapshot 是和一个 Hive 维度表对应的,生成的过程是: O
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2)维度表越小越好。Apache Kylin支持选择是否将维度表加载到内存中以供查询,过大的表不适合作为维度表,默认的阈值是300Mb。 F
指定对哪个数据模型执行数据预处理,生成不同维度的数据
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粒度优化 M创建增量Cube的过程和创建普通Cube的过程基本类似,只是增量Cube会有一些额外的配置要求 O
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