<property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property>
时间: 2023-11-02 17:32:30 浏览: 37
This property is used to specify the auxiliary services to be run by the NodeManager. In this case, the value "mapreduce_shuffle" indicates that the NodeManager will run the MapReduce shuffle service. The MapReduce shuffle service is responsible for transferring data between the map and reduce tasks in a MapReduce job.
相关问题
vi yarn-site.xml <configuration> <property> <name>yarn.resourcemanager.hostname</name> <value>zhaosai</value> </property> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> </configuration>写注释
以下是针对这段代码的注释:
# 通过 vi 命令编辑 yarn-site.xml 文件
vi yarn-site.xml
# 在文件中插入以下配置信息
<configuration>
<property>
# 设置 YARN ResourceManager 的主机名为 zhaosai
<name>yarn.resourcemanager.hostname</name>
<value>zhaosai</value>
</property>
<property>
# 设置 NodeManager 的辅助服务为 mapreduce_shuffle
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
配置yarn-site.xml
yarn-site.xml 是 Hadoop YARN 的配置文件,它位于 $HADOOP_HOME/etc/hadoop 目录下。下面是一个基本的 yarn-site.xml 配置文件示例:
``` xml
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>your-resourcemanager-hostname</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
<property>
<name>yarn.log-aggregation.retain-seconds</name>
<value>2592000</value>
</property>
</configuration>
```
其中,配置项的具体含义如下:
- yarn.resourcemanager.hostname:指定资源管理器的主机名。
- yarn.nodemanager.aux-services:指定 NodeManager 的附属服务,这里为 mapreduce_shuffle。
- yarn.log-aggregation-enable:指定是否启用日志聚合功能。
- yarn.log-aggregation.retain-seconds:指定聚合后的日志保留时间,单位为秒。
根据实际情况,可以根据上述示例修改 yarn-site.xml 文件的配置项。