分布式调度框架。
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<configuration>
<property>
<name>master.exec.threads</name>
<value>100</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>master execute thread num</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.exec.task.num</name>
<value>20</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>master execute task number in parallel</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.heartbeat.interval</name>
<value>10</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>master heartbeat interval</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.task.commit.retryTimes</name>
<value>5</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>master commit task retry times</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.task.commit.interval</name>
<value>1000</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>master commit task interval</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.max.cpuload.avg</name>
<value>100</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>only less than cpu avg load, master server can work. default value : the number of cpu cores * 2</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.reserved.memory</name>
<value>0.3</value>
<description>only larger than reserved memory, master server can work. default value : physical memory * 1/10, unit is G.</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>master.listen.port</name>
<value>5678</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>master listen port</description>
<on-ambari-upgrade add="true"/>
</property>
</configuration>