java - 在OS X上配置Hadoop时出错

Question

我收到了错误:第144行:/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/bin/java:没有这样的文件或目录

在http://www.talendbyexample.com/configuring-hadoop-2.html和http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/SingleCluster.html之后进行配置之后，

我输入:

$ hadoop version

并得到

/hadoop/hadoop2/bin/hadoop: line 144: /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/bin/java: No such file or directory
/hadoop/hadoop2/bin/hadoop: line 144: exec: /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/bin/java: cannot execute: No such file or directory

Answer 1

hadoop命令使用以下命令:

exec "$JAVA" ..

该JAVA变量由hadoop_config.sh设置，而hadoop_config.sh由hadoop命令获取。设置为:

JAVA=$JAVA_HOME/bin/java

这意味着您的JAVA_HOME不正确。因此，将适当的值分配给JAVA_HOME并重新运行命令。