Hadoop资源调度器

Hadoop调度器主要有三种：FIFO、Capacity Scheduler和Fair Scheduler。Hadoop2.7.2默认的资源调度器是Capacity Scheduler

具体设置详见：yarn-default.xml文件

<property>

    <description>The class to use as the resource scheduler.</description>

    <name>yarn.resourcemanager.scheduler.class</name>

<value>org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler</value>

</property>