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第七章《数据缓存机制》勘误与修改建议 #8

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JerryLead opened this issue Jul 20, 2020 · 2 comments
Open

第七章《数据缓存机制》勘误与修改建议 #8

JerryLead opened this issue Jul 20, 2020 · 2 comments

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@JerryLead
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@hangjianglaoweng
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第186页,表7.1,job2的stage5:Shuffle Read => reducedRDD(cached) => Shuffle Write
这里的“Shuffle Read =>”应该在上面划线划掉吧,cached前面的还用Shuffle Read 吗?

@wongxingjun
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wongxingjun commented Aug 6, 2021

P182,“即在foreach()操作之前添加mappedRDD.cache()语句,去掉示例中的注释”,示例中本来就没有注释mappedRDD.cache()语句,这是一个小错误。

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