Question

安装了hadoop，在执行./start-all.sh时，会卡在starting secondarynamenode……

在ubuntu上安装了hadoop，然后再执行命令start-all.sh时，出现如下状况：
hadoop@zzl1:~/hadoopinstall/hadoop-1.1.2/bin$ ./start-all.sh starting namenode, logging to /home/hadoop/hadoopinstall/hadoop-1.1.2/libexec/../logs/hadoop-hadoop-namenode-zzl1.out
zzl2: starting datanode, logging to /home/hadoop/hadoopinstall/hadoop-1.1.2/libexec/../logs/hadoop-hadoop-datanode-zzl2.out
192.168.211.132: datanode running as process 8609. Stop it first.
hadoop@192.168.211.130's password: hadoop@zzl1's password:
192.168.211.130: starting secondarynamenode, logging to /home/hadoop/hadoopinstall/hadoop-1.1.2/libexec/../logs/hadoop-hadoop-secondarynamenode-zzl1.out

就一直卡在这儿，不动了。
zzl1是主机，zzl2是分机。

Answer 1

这是因为datanode上次运行时没有关掉，所以先stop-all，再start-all

Answer 2

kill 8609，在132的主机上。同时，为什么还要输密码，ssh无密码访问你设置好了？