org.apache.hadoop.mapred.JobTracker: java.lang.RuntimeException: Not a host:port pair: local
需配置mapred.job.tracker屬性,在mapred-site.xml的configuration節點中配置(job-tracker host爲jobTracker服務器的ip或域名)
<property>
<name>mapred.job.tracker</name>
<value>[job-tracker host]:9001</value>
</property>
hadoop錯誤之二Ubuntu停 ssh : connect to host localhost port 22:Connection refused
Ubuntu下 ssh : connect to host localhost port 22:Connection refused
Ubuntu下測試ssh時使用ssh localhost 命令,出現錯誤提示connect to host localhost port 22:Connection refused
造成這個錯誤的原因可能是ssh-server未安裝或者未啓動。ubuntu 11.10 默認安裝openssh-client,但是木有安裝server
運行 ps -e | grep ssh,查看是否有sshd進程如果沒有,說明server沒啓動,通過 /etc/init.d/ssh -start 啓動server進程,如果提示ssh不存在 那麼就是沒安裝server通過 sudo apt-get install openssh-server命令安裝即可
轉載請註明源 http://asyty.iteye.com/blog/1440141