hadoop 2.7 配置文件

下面是我测试可用的配置文件，搭建环境见另外一个文章

1. /etc/hadoop/core-site.xml (在系统中建好tmp文件夹)

<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://n1:9000</value>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>file:/home/grid/hadoop-2.7.3/tmp</value>
<description>Abase for other temporary directories.</description>
</property>
<property>
<name>hadoop.proxyuser.hduser.hosts</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.hduser.groups</name>
<value>*</value>
</property>
</configuration>

2. /etc/hadoop/hdfs-site.xml(按照dir路径，在系统中新建目录)

<configuration>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>n1:9001</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/home/grid/hadoop-2.7.3/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/home/grid/hadoop-2.7.3/data</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.webhdfs.enabled</name>
<value>true</value>
</property>
</configuration>

3. /etc/hadoop/yarn-site.xml

<configuration>
<!-- Site specific YARN configuration properties -->
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
    <property>
        <name>yarn.nodemanager.auxservices.mapreduce.shuffle.class</name>
        <value>org.apache.hadoop.mapred.ShuffleHandler</value>
    </property>
    <property>
        <name>yarn.resourcemanager.address</name>
        <value>n1:8032</value>
    </property>
    <property>
        <name>yarn.resourcemanager.scheduler.address</name>
        <value>n1:8030</value>
    </property>
    <property>
        <name>yarn.resourcemanager.resource-tracker.address</name>
        <value>n1:8031</value>
    </property>
    <property>
        <name>yarn.resourcemanager.admin.address</name>
        <value>n1:8033</value>
    </property>
    <property>
        <name>yarn.resourcemanager.webapp.address</name>
        <value>n1:8088</value>
    </property>
    <property>
        <name>yarn.nodemanager.vmem-check-enabled</name>
        <value>false</value>
    </property>
    <property>
   <name>yarn.nodemanager.vmem-pmem-ratio</name>
    <value>4</value>
    <description>Ratio between virtual memory to physical memory when setting memory limits for containers</description>
</property> 
<property>
<name>yarn.nodemanager.resource.memory-mb</name>
<value>1024</value> 
</property> 
<property>
<name>yarn.scheduler.minimum-allocation-mb</name>
 <value>128</value>
</property>
</configuration>

4. /etc/hadoop/mapred-site.xml(复制模板并修改)

<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>mapreduce.jobhistory.address</name>
<value>n1:10020</value>
</property>
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>n1:19888</value>
</property>
<property>
    <name>yarn.app.mapreduce.am.resource.mb</name>
    <value>768</value>
</property>
</configuration>

5. 修改/hadoop-2.7.3/etc/hadoop目录下hadoop-env.sh、yarn-env.sh的JAVA_HOME（必须修改，用$JAVA_HOME不行）

export JAVA_HOME=/usr/jdk1.8.0_131

6. 修改/etc/hadoop/slaves

d1
d2