在編寫myjob時，報錯：is running 221518336B beyond the 'VIRTUAL' memory limit. Current usage: 74.0 MB of 1 GB physical memory used; 2.3 GB of 2.1 GB virtual memory used. Killing container.
此問題原因是container在申請多余的內存時，被resouremanager殺掉了，
此處可修改hadoop/etc/mapred-site.xml
添加配置信息
<property>
<name>mapreduce.map.memory.mb</name>
<value>1536</value>
</property>
<property>
<name>mapreduce.map.java.opts</name>
<value>-Xmx1024M</value>
</property>
<property>
<name>mapreduce.reduce.memory.mb</name>
<value>3072</value>
</property>
<property>
<name>mapreduce.reduce.java.opts</name>
<value>-Xmx2560M</value>
</property>
然后重啟整個haodoop模塊
重新提交任務