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alluxio源码分析定位
alluxio源码分析定位
Alluxio源码分析定位
策略:指定主机策略SpecificHostPolicy
指定主机策略SpecificHostPolicy是一种总是返回一个指定主机名的worker的
定位
策略。如果在那个主机名对应机器上没有活跃worker的话则返回null。在SpecificHostPolicy内部,封装了一个成员变量,如下:/主机名 private final String ...
Alluxio源码分析定位
策略:本地优先策略LocalFirstPolicy
LocalFirstPolicy是一个优先返回本地主机的
定位
策略,如果本地worker没有足够的容量,那么就会从活跃有效的workers列表随机选择一个worker用于每个块写入。在其内部,有一个关键的成员变量mLocalHostName,即本地主机名,它是用于选择本地...
Alluxio源码分析定位
策略:循环遍历策略RoundRobinPolicy
循环遍历策略RoundRobinPolicy是一种通过循环遍历方式并且跳过没有足够空间workers的为下一个数据块选择worker的策略。如果没有worker被找到,该策略会返回null。在RoundRobinPolicy内部,有三个十分重要的成员变量,...留待以后慢慢
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Alluxio源码分析定位
策略:最大可用容量优先策略MostAvailableFirstPolicy
最大可用容量优先策略MostAvailableFirstPolicy是一种worker可用容量最大的
定位
策略。如果没有worker合格的话该策略返回null。它的核心方法getWorkerForNextBlock()实现如下:/*A policy that returns the worker with the most available ...
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智能顾问 Advisor
一款开箱即用的风险巡检产品,一键巡检快速识别当前云资源、应用架构的潜在风险并针对性提供解决方案。同时提供架构拓扑,便于风险的快速定位。
立即开通
产品文档
了解更多
快速入门
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智能顾问 Advisor
一款开箱即用的风险巡检产品,一键巡检快速识别当前云资源、应用架构的潜在风险并针对性提供解决方案。同时提供架构拓扑,便于风险的快速定位。
立即开通
产品文档
了解更多
快速入门