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来自专栏Michael阿明学习之路
hive性能调优读书笔记 - 调优多样性(改写sql、数据块大小、格式、分区、分桶)
set mapreduce.job.reduces=<number> Job running in-process (local Hadoop) 2023-02-23 03:48:43,061 Stage Stage-9 map = 100%, reduce = 0% 2023-02-23 03:50:46,582 Stage-9 map = 100%, reduce = 0% 2023-02-23 03:51:45,862 Stage-9 map = 99%, reduce = 0% 2023-02-23 03:51:46,883 Stage-9 map = 100%, reduce = 100% 2023-02-23 03:51:47,900 Stage-9 map = 100%, reduce = 26% 2023-02-23 03:51:48,920 Stage-9 map = 100% , reduce = 44% 2023-02-23 03:51:50,000 Stage-9 map = 100%, reduce = 100% Ended Job = job_local382327797
83140编辑于 2023-03-11
来自专栏数据之美
一例 Hive join 优化实战
stages: Stage-11 Stage-2 depends on stages: Stage-1 Stage-3 depends on stages: Stage-2, Stage-6, Stage Stage-6 depends on stages: Stage-5 Stage-13 is a root stage Stage-8 depends on stages: Stage-13 Stage
3.2K91发布于 2018-02-24