hadoop启动时报错，java: No such file or directory和localhost: Error: JAVA_HOME is not set.

Posted 2023-03-09

hadoop-env.sh文件中配置为

# The java implementation to use. Required.
# export JAVA_HOME=/cygdrive/d/Java/jdk1.6.0_26

jdk1.6.0_26安装路径为：

D:\Java\jdk1.6.0_26\

电脑中环境变量java_home为：

D:\Java\jdk1.6.0_26\;D:\Java\jdk1.6.0_26\jre\bin

完全按照《Hadoop开发者》第一期，在win7环境下配置的，运行./start-all.sh，报错java: No such file or directory和localhost: Error: JAVA_HOME is not set.

william@william-PC /cygdrive/d/hadoop/run/bin
$ ls
hadoop slaves.sh start-mapred.sh stop-mapred.sh
hadoop-config.sh start-all.sh stop-all.sh task-controller
hadoop-daemon.sh start-balancer.sh stop-balancer.sh
hadoop-daemons.sh start-dfs.sh stop-dfs.sh
rcc start-jobhistoryserver.sh stop-jobhistoryserver.sh

william@william-PC /cygdrive/d/hadoop/run/bin
$ ./start-all.sh
starting namenode, logging to /cygdrive/d/hadoop/run/libexec/../logs/hadoop-william-name node-william-PC.out
/cygdrive/d/hadoop/run/libexec/../bin/hadoop: line 321: D:\Java\jdk1.6.0_26\;D:\Java\jdk 1.6.0_26\jre\bin/bin/java: No such file or directory
/cygdrive/d/hadoop/run/libexec/../bin/hadoop: line 387: D:\Java\jdk1.6.0_26\;D:\Java\jdk 1.6.0_26\jre\bin/bin/java: No such file or directory
/cygdrive/d/hadoop/run/libexec/../bin/hadoop: line 387: exec: D:\Java\jdk1.6.0_26\;D:\Ja va\jdk1.6.0_26\jre\bin/bin/java: cannot execute: No such file or directory
localhost: starting datanode, logging to /cygdrive/d/hadoop/run/libexec/../logs/hadoop-w illiam-datanode-william-PC.out
localhost: Error: JAVA_HOME is not set.
localhost: starting secondarynamenode, logging to /cygdrive/d/hadoop/run/libexec/../logs /hadoop-william-secondarynamenode-william-PC.out
localhost: Error: JAVA_HOME is not set.
starting jobtracker, logging to /cygdrive/d/hadoop/run/libexec/../logs/hadoop-william-jo btracker-william-PC.out
/cygdrive/d/hadoop/run/libexec/../bin/hadoop: line 321: D:\Java\jdk1.6.0_26\;D:\Java\jdk 1.6.0_26\jre\bin/bin/java: No such file or directory
/cygdrive/d/hadoop/run/libexec/../bin/hadoop: line 387: D:\Java\jdk1.6.0_26\;D:\Java\jdk 1.6.0_26\jre\bin/bin/java: No such file or directory
/cygdrive/d/hadoop/run/libexec/../bin/hadoop: line 387: exec: D:\Java\jdk1.6.0_26\;D:\Ja va\jdk1.6.0_26\jre\bin/bin/java: cannot execute: No such file or directory
localhost: starting tasktracker, logging to /cygdrive/d/hadoop/run/libexec/../logs/hadoo p-william-tasktracker-william-PC.out
localhost: Error: JAVA_HOME is not set.

刚开始学hadoop，就遇到这个问题，已经周旋好几天好，始终解决不了，拜求大虾帮小弟看看啊！

参考技术A # The java implementation to use. Required.
# export JAVA_HOME=/cygdrive/d/Java/jdk1.6.0_26

------->
# The java implementation to use. Required
export JAVA_HOME=/cygdrive/d/Java/jdk1.6.0_26 参考技术B 很明显是java home没有配好 ，输入cd $JAVA_HOME，看行不行？本回答被提问者采纳 参考技术C 1234123