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_posts/2019/正确的使用java线程池.md renamed to _posts/2019/2019-08-21-how-to-use-ThreadPool.md

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# 正确的使用java线程池
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---
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layout: post
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title: "如何正确的使用java线程池 "
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subtitle: "信息、载体、抽象、线程 设计乱谈"
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date: 2019-08-21
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author: "LSG"
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header-img: "img/post-bg-miui6.jpg"
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catalog: true
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tags:
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- Thread
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- Pool
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- java
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---
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### 1.为什么使用线程池:
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- 复用已有资源
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- 控制资源总量
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### 2.java自带的四种线程池工厂
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#### 2.1Java通过Executors提供四种线程池,分别为:
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#### 2.1 Java通过Executors提供四种线程池,分别为:
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1. newCachedThreadPool创建一个可缓存线程池,如果线程池长度超过处理需要,可灵活回收空闲线程,若无可回收,则新建线程。
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1. newFixedThreadPool 创建一个定长线程池,可控制线程最大并发数,超出的线程会在队列中等待。

_posts/2019/数据仓库hive.md renamed to _posts/2019/2019-09-30-how-to-use-hive.md

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# 数据仓库hive
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---
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layout: post
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title: "数据仓库hive的使用总结 "
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subtitle: "信息、载体、抽象、线程 设计乱谈"
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date: 2019-09-30
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author: "LSG"
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header-img: "img/post-bg-infinity.jpg"
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catalog: true
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tags:
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- hadoop
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- hive
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- SQL
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---
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> hive的常见用法
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### 1.1模型
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