问题:java.lang.OutOfMemoryError: Java heap space
解决方案:进入hadoop安装目录下的$HADOOP_HOME/etc/hadoop/目录,修改yarn-site.xml,加入如下代码
<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>
修改完成后重启yarn与hive服务即可
#yarn
stop-yarn.sh
start-yarn.sh
#Hive一键启动脚本
hiveservices.sh restart