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作业帮StarRocks替换Presto落地实践
作者 | 作业帮大数据团队（覃争、孙建业、刘泽强） 历史背景 作业帮 Presto 主要应用在即席查询场景，基本不用于 toB 系统和例行数仓构建场景。天级查询规模大概在 2000 ~ 5000 次，均值查询耗时分钟级别，整体偏慢；Presto、Yarn、HDFS 是混布的，进程间只做内存资源限制，高峰期宿主节点 Cpu ...
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