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Yarn配置细节

##内存,核数设置

      <property>
    <name>yarn.nodemanager.resource.memory-mb</name>
    <value>4096</value>
</property>

<property>
    <name>yarn.scheduler.minimum-allocation-mb</name>
    <value>1024</value>
</property>
<property>
    <name>yarn.scheduler.maximum-allocation-mb</name>
    <value>3072</value>
</property>
<!--该配置用于配置任务请求时的资源. -->
<property>
    <name>yarn.app.mapreduce.am.resource.mb</name>
    <value>2048</value>
</property>

<property>
    <name>yarn.app.mapreduce.am.command-opts</name>
    <value>-Xmx3276m</value>
</property>
  <property>
    <name>yarn.nodemanager.resource.cpu-vcores</name>
    <value>2</value>
</property>
<property>
    <name>yarn.scheduler.maximum-allocation-vcores</name>
    <value>3</value>
</property>