yarn配置、启动、测试

1： yarn共用hdfs的core-site.xml和hdfs-site.xml 。
2 : yarn-site.xml 配置：

<property>
        <name>yarn.resourcemanager.webapp.address</name>
        <value>bigdata0:8088</value>
    </property>
    <property>
        <name>yarn.resourcemanager.hostname</name>
        <value>bigdata0</value>
    </property>
    <property>
        <name>yarn.nodemanager.log-dirs</name>
        <value>/mnt/home/1141797198/yarn/0/logs,/mnt/home/1141797198/yarn/1/logs,/mnt/home/1141797198/home/yarn/2/logs</value>
    </property>
    <property>
        <name>yarn.nodemanager.local-dirs</name>
        <value>/mnt/home/1141797198/yarn/0/local,/mnt/home/1141797198/yarn/1/local,/mnt/home/1141797198/yarn/2/local</value>
    </property>
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>

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3：mapred-site.xml配置：

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
    <property>
        <name>mapreduce.jobhistory.address</name>
        <value>bigdata0:10020</value>
    </property>
    <property>
        <name>mapreduce.jobhistory.webapp.address</name>
        <value>bigdata0:19888</value>
    </property>
</configuration>

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4：启动：​​yarn resourcemanager​​5 : 创建目录：

mkdir -p /mnt/home/1141797198/yarn/{0..2}/logs
        mkdir -p /mnt/home/1131797197/yarn/{0..2}/local

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6 : 启动nodemanager

/mnt/home/1141797198/hadoop-current/bin/yarn nodemanager

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7 : 测试 ：​​hadoop jar hadoop-current/share/hadoop/mapreduce/hadoop -mapreduce-examples-2.7.6.jar pi 5 10​​​8 :测试 ​​hadoop jar share/hadoop/mapreduce/hadoop -mapreduce-examples-2.7.6.jar wordcount /user/hadoop/input /user/hadoop/output​​9:启动mapred historyserver:

mapred historyserver

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10 : 后台启动:

/mnt/home/1141797198/hadoop-current/sbin/yarn-deamon.sh start resourcemanager
    /mnt/home/1141797198/hadoop-current/sbin/yarn-deamon.sh start nodemanager
    /mnt/home/1141797198/hadoop-current/sbin/mr-jobhistory-deamon.sh start historyserver