解决方法1:
(1)关掉虚拟内存检查,修改 yarn-site.xml,在/export/servers/hadoop-2.7.7/etc/hadoop/yarn-site.xml
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
(2)修改后一定要分发,并重新启动 hadoop 集群。
xsync yarn-site.xml
解决方法2:
在解决1的基础上增加
<property>
<name>yarn.scheduler.maximum-allocation-mb</name>
<value>2048</value>
</property>
<property>
<name>yarn.scheduler.minimum-allocation-mb</name>
<value>2048</value>
</property>
<property>
<name>yarn.nodemanager.vmem-pmem-ratio</name>
<value>2.1</value>
</property>
<property>
<name>mapred.child.java.opts</name>
<value>-Xmx1024m</value>
</property>
记得分发重启群集