hadoop配置文件core-site.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
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<!-- Put site-specific property overrides in this file. -->

<configuration>

<!--这里的值指的是默认的HDFS路径。当有多个HDFS集群同时工作时，用户如果不写集群名称，那么默认使用哪个哪？在这里指定！该值来自于hdfs-site.xml中的配置-->

    <property>
        <name>fs.defaultFS</name>
        <value>hdfs://mycluster</value>

    </property>

<!---这里的路径默认是NameNode、DataNode、JournalNode等存放数据的公共目录->

    <property>
        <name>hadoop.tmp.dir</name>
        <value>/opt/modules/hadoop-2.5.0/data</value>

    </property>

<!--这里是ZooKeeper集群的地址和端口。注意，数量一定是奇数，且不少于三个节点-->

    <property>
       <name>ha.zookeeper.quorum</name>
       <value>hadoop-senior01.beifeng.com:2181,hadoop-senior04.beifeng.com:2181,hadoop-senior03.beifeng.com:2181</value>
     </property>
</configuration>