Warning: $HADOOP_HOME is deprecated. hadoop1.0.4解决方法
?对于这个警告问题，解决方法如下：?
1.注释掉hadoop-config.sh里的上面给出的这段if fi配置（不推荐）
2.在当前用户home/.bash_profile里增加一个环境变量：
export HADOOP_HOME_WARN_SUPPRESS=1
注：修改完.bash_profile后需要执行source操作使其生效
[root@localhost hadoop-1.0.4]# ./bin/start-all.sh starting namenode, logging to /root/hadoop-1.0.4/libexec/../logs/hadoop-root-namenode-localhost.outlocalhost: starting datanode, logging to /root/hadoop-1.0.4/libexec/../logs/hadoop-root-datanode-localhost.outlocalhost: starting secondarynamenode, logging to /root/hadoop-1.0.4/libexec/../logs/hadoop-root-secondarynamenode-localhost.outstarting jobtracker, logging to /root/hadoop-1.0.4/libexec/../logs/hadoop-root-jobtracker-localhost.outlocalhost: starting tasktracker, logging to /root/hadoop-1.0.4/libexec/../logs/hadoop-root-tasktracker-localhost.out
?没有出现Warning: $HADOOP_HOME is deprecated，说明问题已经解决。
