mac配置hadoop伪分布式

首先先用brew下载hadoop

brew install hadoop

它的xml文件都在/usr/local/Celler/hadoop/2.7.3/libexec/etc/hadoop下
接着一步一步修改文件

• 修改core-site.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

    <configuration>
        <property>
            <name>fs.defaultFS</name>
            <value>hdfs://localhost</value>
        </property>

    </configuration>

• 修改hdfs-site.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

<configuration>
    <property>
        <name>dfs.replication</name>
        <value>1</value>
    </property>

</configuration>

• 修改mapred-site.xml,如果没有就自己创建一个

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>
    <property>
        <name>mapred.jpb.tracker</name>
        <value>localhost:8021</value>
    </property>
</configuration>

• 修改yarn-site.xml

<?xml version="1.0"?>
<!--
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License. See accompanying LICENSE file.
-->
<configuration>

<!-- Site specific YARN configuration properties -->
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
    <property>
        <name>yarn.resourcemanager.address</name>
        <value>localhost:8032</value>
    </property>

</configuration>

记得看一看hadoop-env.sh下的JAVA_HOME路径是否正确。

• 最后通过$ hadoop namenode -format来格式化HDFS文件

• 最后./usr/local/Cellar/hadoop/2.7.3/libexec/sbin/start-dfs.sh启动守护进程$ ./usr/local/Cellar/hadoop/2.7.3/libexec/sbin/start-yarn.sh启动ResourceManager和NodeManager
  输入：http://localhost:8088进入ResourceManager管理页面
  输入：http://localhost:50070进入HDFS页面
  关闭服务有个./stop-all.sh命令